CN115184342B - An online analysis method, device, storage medium and equipment for chemical composition of molten iron in a molten iron tank - Google Patents

Abstract

Translated fromChinese

本发明公开了一种铁水罐内熔融铁水化学成分的在线分析方法、装置、存储介质和设备，其中，在线分析方法根据不同时刻对应的流入铁水罐中的铁水重量信息以及流入铁水罐前的铁水中的元素i的含量信息，拟合得到铁水罐中的铁水重量随流入时间t变化的曲线函数以及流入铁水罐前中的铁水中的元素i的含量随流入时间t变化的插值或平滑处理函数，然后计算得到铁水排放周期内任意时刻t_n时铁水罐中铁水总重量以及铁水排放周期内任意时刻t_n时铁水罐中铁水中的元素i的平均含量信息。由此，实现了对整个排放周期内任意时刻的铁水罐中的铁水或者某一时段流入铁水罐中的铁水的重量和化学成分的在线分析。

The present invention discloses an online analysis method, device, storage medium and equipment for the chemical composition of molten iron in a molten iron tank, wherein the online analysis method fits the curve function of the weight of the molten iron in the molten iron tank changing with the inflow time t and the interpolation or smoothing function of the content of the element i in the molten iron before flowing into the molten iron tank changing with the inflow time t according to the weight information of the molten iron flowing into the molten iron tank corresponding to different moments and the content information of the element i in the molten iron before flowing into the molten iron tank, and then calculates the total weight of the molten iron in the molten iron tank at any moment_tn in the molten iron discharge cycle_and the average content information of the element i in the molten iron in the molten iron tank at any moment tn in the molten iron discharge cycle. Thus, the online analysis of the weight and chemical composition of the molten iron in the molten iron tank at any moment in the entire discharge cycle or the molten iron flowing into the molten iron tank in a certain period of time is realized.

Description

Online analysis method, device, storage medium and equipment for chemical components of molten iron in hot metal ladle

Technical Field

The invention belongs to the technical field of high-temperature melt component detection, and particularly relates to an online analysis method, an online analysis device, a storage medium and online analysis equipment for chemical components of molten iron in a hot metal ladle.

Background

Blast furnace molten iron is a main raw material of a steelmaking process, and chemical components of the molten iron are critical to the amount of molten iron required for pretreatment of the molten iron before steelmaking and the smelting quality of steel. At present, a laboratory off-line analysis method after manual sampling and sample preparation is often adopted for the chemical components of molten iron in a molten iron tank, the off-line detection process is long in time consumption, the detection result is seriously delayed, and the sampling and detection have a sampling representative problem due to the difference of the chemical components of molten iron in a molten iron discharge period, so that the chemical component information of the molten iron in the molten iron tank cannot be timely and effectively fed back. Although some detection methods can realize online detection of molten iron components at present, because of the limitation of detection frequency of detection equipment, online detection is discontinuous detection, and the molten iron components at partial moments cannot be detected, namely online analysis detection of the molten iron components in the whole discharge period or a certain period cannot be realized.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide an on-line analysis method of chemical components of molten iron in a hot metal ladle. The method realizes the on-line analysis of the weight and chemical components of the molten iron in the molten iron tank at any time in the whole discharge period or the molten iron flowing into the molten iron tank at a certain period, and is rapid in real time, thereby providing a key technical support for the on-line detection and analysis of the chemical components of the molten iron in the molten iron tank in the steel smelting.

A second object of the present invention is to propose a computer readable storage medium.

A third object of the invention is to propose an analysis device.

The fourth object of the invention is to provide an on-line analysis device for chemical components of molten iron in a molten iron tank.

In order to achieve the above object, a first aspect of the present invention provides an online analysis method for chemical components of molten iron in a hot metal ladle. According to an embodiment of the invention, the method comprises:

(1) In the process of flowing molten iron into the molten iron tank, acquiring weight information of molten iron flowing into the molten iron tank corresponding to different momentsAnd content information of element i in molten iron before flowing into the ladle

(2) According to the weight information of the molten iron flowing into the molten iron tank corresponding to different momentsFitting to obtain a curve function M (t) of the weight of the molten iron in the molten iron tank along with the inflow time t, and obtaining content information of an element i in the molten iron before the molten iron flows into the molten iron tank according to the corresponding different momentsFitting to obtain an interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the change of the inflow time t;

(3) According to the curve function M (t), calculating to obtain the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge periodAnd/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAccording to the curve function M (t) and the interpolation or smoothing function C_i (t), calculating to obtain the average content of the element i in the molten iron tank at any time t_n in the molten iron discharging periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation.

According to the on-line analysis method of the chemical components of the molten iron in the molten iron tank, the method is based on the weight information of the molten iron flowing into the molten iron tank at different momentsAnd content information of element i in molten iron before flowing into the ladleFitting to obtain a curve function M (t) of the weight of molten iron in the molten iron tank and an interpolation or smoothing function C_i (t) of the content of an element i in the molten iron before flowing into the molten iron tank and changing along with the inflow time t, and calculating to obtain the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge period according to the curve function M (t) and the interpolation or smoothing function C_i (t)And/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAverage content of element i in molten iron tank at arbitrary time t_n in molten iron discharge periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation. Therefore, the method realizes the on-line analysis of the weight and chemical components of the molten iron in the molten iron tank at any time in the whole discharge period or the molten iron flowing into the molten iron tank at a certain period, and is rapid in real time, thereby providing key technical support for the on-line detection and analysis of the chemical components of the molten iron in the molten iron tank in the steel smelting.

In addition, the method for on-line analysis of chemical components of molten iron in a hot metal ladle according to the above embodiment of the present invention may further have the following additional technical features:

in some embodiments of the present invention, in step (1), the content information of the element i in the molten iron before flowing into the hot metal ladle corresponding to different times is acquired using an on-line composition analyzer

In some embodiments of the present invention, in step (1), the rail weighbridge is used to obtain the weight information of the molten iron flowing into the molten iron tank corresponding to different times

In some embodiments of the present invention, in the step (1), the weight information of the molten iron flowing into the molten iron tank corresponding to different times is obtained at intervals of 2-6 minutesAnd content information of element i in molten iron before flowing into the ladle

In some embodiments of the present invention, in the step (1), at least 20 pieces of weight information of molten iron flowing into the hot metal ladle corresponding to different times are obtainedAnd content information of element i in molten iron before flowing into the ladle

In some embodiments of the invention, in step (1), the element i is at least one of Si, S, mn, ti, cu, P, sn, as and C.

In some embodiments of the present invention, in the step (3), the total weight of the molten iron flowing into the molten iron tank at any time t_n during the molten iron discharge periodThe calculation formula of (2) is as follows:

Wherein M (t₀) is the net weight of the hot-metal ladle, and M (t_n) is the total weight of the hot-metal ladle at the moment t_n.

In some embodiments of the present invention, in the step (3), the total weight of molten iron flowing into the molten iron tank during any of the periods t_m to t_n in the molten iron discharge periodThe calculation formula of (2) is as follows:

Wherein M (t_n) is the total weight of the hot-metal ladle at the time t_n, and M (t_m) is the total weight of the hot-metal ladle at the time t_m.

In some embodiments of the present invention, in the step (3), during the molten iron discharge period, the total weight of the element i in the molten iron flowing into the molten iron tank at any time t_n is the integral area of the product of the curve function M (t) and the interpolation or smoothing function C_i (t), and the calculation formula is:

In the molten iron discharge period, the content of an element i in molten iron flowing into a molten iron tank at any time t_n is as follows:

In some embodiments of the present invention, in the step (3), in the molten iron discharge period, the total weight of the element i in the molten iron flowing into the molten iron tank in any of the periods t_m to t_n is an integral area of the product of the curve function M (t) and the interpolation or smoothing function C_i (t), and the calculation formula is:

Average content of element i in molten iron tank in any time period from t_m to t_n detection in the molten iron discharge period:

In still another aspect, the present invention provides a computer readable storage medium having stored thereon an on-line analysis program of chemical composition of molten iron in a molten iron tank, which when executed by a processor, implements an on-line analysis method of chemical composition of molten iron in a molten iron tank according to the above-described embodiments of the present invention.

In a third aspect of the present invention, an analysis apparatus is provided according to an embodiment of the present invention, which includes a memory, a processor, and an on-line analysis program of molten iron chemical composition in a hot metal ladle stored on the memory and operable on the processor, wherein the processor implements an on-line analysis method according to the molten iron chemical composition in the hot metal ladle when executing the on-line analysis program of molten iron chemical composition in the hot metal ladle.

In a fourth aspect of the present invention, the present invention provides an on-line analysis apparatus for chemical components of molten iron in a hot metal ladle, the apparatus comprising:

The acquisition module is used for acquiring the weight information of the molten iron flowing into the molten iron tank corresponding to different momentsAnd content information of element i in molten iron before flowing into the ladle

Fitting module for corresponding to the weight information of molten iron flowing into the molten iron tank at different momentsFitting to obtain a curve function M (t) of the weight of the molten iron in the molten iron tank along with the inflow time t, and obtaining content information of an element i in the molten iron before the molten iron flows into the molten iron tank according to the corresponding different momentsFitting to obtain an interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the change of the inflow time t;

A calculation module for calculating the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge period according to the curve function M (t)And/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAccording to the curve function M (t) and the interpolation or smoothing function C_i (t), calculating to obtain the average content of the element i in the molten iron tank at any time t_n in the molten iron discharging periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation.

According to the online analysis device for the chemical components of the molten iron in the molten iron tank, disclosed by the embodiment of the invention, the online analysis of the weight and the chemical components of the molten iron in the molten iron tank at any time in the whole discharge period or the molten iron flowing into the molten iron tank at a certain period is realized, and the method is rapid in real time, so that a key technical support is provided for online detection and analysis of the chemical components of the molten iron in the molten iron tank in steel smelting.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic flow chart of an on-line analysis method of chemical components of molten iron in a hot-metal ladle according to an embodiment of the invention;

fig. 2 is a schematic diagram showing the weight of molten iron obtained by the rail weighbridge in example 1 over time;

fig. 3 is a schematic view showing the Ti element content of the molten iron according to example 1 with time.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In one aspect, the invention provides an online analysis method for chemical components of molten iron in a hot metal ladle. According to an embodiment of the present invention, referring to fig. 1, the method includes:

S100, acquiring weight information of molten iron flowing into the molten iron tank corresponding to different moments in the process of flowing molten iron into the molten iron tankAnd content information of element i in molten iron before flowing into the ladle

Specifically, the embodiment of the invention adopts an online component analyzer to obtain the content information of the element i in the molten iron before flowing into the molten iron tank corresponding to different timesThe content informationRefers to mass percent information.

The on-line component analyzer focuses high-energy pulse laser on molten iron to be detected to generate plasma through an optical system, then detects plasma signal light spectrum data through a spectrum detector, finally realizes on-line detection of molten iron components before flowing into a molten iron tank through data processing of the spectrum, and can acquire content information of a certain set element or a plurality of set elements in the molten iron.

The on-line component analyzer can detect the content of the set component contained in the surface of the object at thirty times per second, but due to the requirement of on-site production and the high-frequency detection limit of the analyzer, the invention sets that the content of a certain set element or a plurality of set elements in the molten iron before flowing into the molten iron tank is detected once every 2-6 minutes, thereby obtaining the weight information of the molten iron corresponding to different momentsAnd content information of element i in molten iron before flowing into the ladleSimilarly, the invention sets that the weight information of the molten iron flowing into the molten iron tank is detected once every 2-6 minutes, thereby obtaining the weight information of the molten iron flowing into the molten iron tank corresponding to different times

Specifically, the element i is an element set in the online component analyzer, and the online component analyzer can only detect the content of the set element, for example, the set element i may be at least one of Si, S, mn, ti, cu, P, sn, as and C.

S200, according to the weight information of the molten iron flowing into the molten iron tank corresponding to different momentsFitting to obtain a curve function M (t) of the weight of the molten iron in the molten iron tank along with the inflow time t, and obtaining content information of an element i in the molten iron before the molten iron flows into the molten iron tank according to the corresponding different momentsFitting to obtain an interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the flowing time t.

As described above, due to the requirement of on-site production and the limitation of high-frequency detection of the analyzer itself, the on-line component analyzer can detect a certain set element or contents of a plurality of set elements in the molten iron before flowing into the molten iron tank only once every 2-6 minutes, and cannot detect every moment in the process of flowing into the molten iron tank, and cannot realize on-line analysis and detection of molten iron components in the whole discharge period or a certain period. In order to overcome the technical problem, the embodiment of the invention is based on the content information of the element i in the molten iron before flowing into the molten iron tank corresponding to different momentsFitting to obtain an interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the flowing time t, wherein the interpolation or smoothing function C_i (t) is used for calculating the average content of the element i in the molten iron tank at any time t_n in the molten iron discharging period in the subsequent stepInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation. Meanwhile, according to the weight information of the molten iron flowing into the molten iron tank corresponding to different momentsFitting to obtain a curve function M (t) of the weight of the molten iron in the molten iron tank along with the change of inflow time t, wherein the curve function M (t) is used for calculating the total weight of the molten iron in the molten iron tank at any time t_n in a molten iron discharge period in the subsequent stepAnd/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_n

Specifically, in step S100, at least 20 pieces of information on the weight of molten iron flowing into the hot metal ladle corresponding to different times are acquiredAnd content information of element i in molten iron before flowing into the ladleThereby, the accuracy of the interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank and the curve function M (t) of the weight of the molten iron in the molten iron tank with the inflow time t obtained by fitting can be ensured. It will be appreciated that the greater the number of detections, the greater the accuracy of the interpolation or smoothing function C_i (t) and the curve function M (t) obtained by fitting.

As a specific example, referring to fig. 2, the fitted curve function M (t) of the weight of molten iron in the molten iron tank with respect to the inflow time t is a binary linear function. It should be noted that, the fitting process of the curve function M (t) of the molten iron weight in the molten iron tank along with the inflow time t belongs to a conventional technology in the art, and will not be described herein.

Specifically, the fitting process of the smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the inflow time t is that the smoothing function C_i (t) is formed by connecting adjacent time points by adopting a smooth curve, as shown in fig. 3.

Specifically, the interpolation function C_i (t) in which the content of the element i in the molten iron before flowing into the molten iron tank changes with the inflow time t is fitted by connecting adjacent time points by straight lines, so that the interpolation function C_i (t) is formed.

S300, according to the curve function M (t), calculating to obtain the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge periodAnd/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAccording to the curve function M (t) and the interpolation or smoothing function C_i (t), calculating to obtain the average content of the element i in the molten iron tank at any time t_n in the molten iron discharging periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation.

Specifically, in the molten iron discharge period, the total weight of molten iron flowing into the molten iron tank at any time t_nThe calculation formula of (2) is as follows:

Wherein M (t₀) is the net weight of the hot-metal ladle, and M (t_n) is the total weight of the hot-metal ladle at the moment t_n.

Specifically, the total weight of molten iron flowing into the molten iron tank in any period from t_m to t_n in the molten iron discharge periodThe calculation formula of (2) is as follows:

Wherein M (t_n) is the total weight of the hot-metal ladle at the time t_n, and M (t_m) is the total weight of the hot-metal ladle at the time t_m.

Specifically, in the molten iron discharge period, the total weight of the element i in the molten iron flowing into the molten iron tank at any time t_n is the integral area of the product of the curve function M (t) and the interpolation or smoothing function C_i (t), and the calculation formula is:

In the molten iron discharge period, the content of an element i in molten iron flowing into a molten iron tank at any time t_n is as follows:

It should be explained that, the smoothing function C_i (t) is obtained by connecting adjacent time points by using a smoothing curve, so that the smoothing function C_i (t) is actually formed by combining multiple sections of curve functions, that is:

Wherein Δt is the detection time interval of the online component analyzer, and each time interval may be the same time interval or different time intervals according to the requirement of online detection of molten iron components in the on-site production process.

Similarly, the interpolation function C_i (t) is obtained by connecting adjacent time points using straight lines, and thus the interpolation function C_i (t) is actually formed by combining a plurality of linear functions.

Then, integrating the products of the linear or curve functions and the curve function M (t), and finally adding the integrated values of the sections to obtain the total weight of the element i in the molten iron flowing into the molten iron tank at any time t_n.

Specifically, in the molten iron discharge period, the total weight of the element i in the molten iron flowing into the molten iron tank in any period from t_m to t_n is the integral area of the product of the curve function M (t) and the interpolation or smoothing function C_i (t), and the calculation formula is:

Average content of element i in molten iron tank in any time period from t_m to t_n detection in the molten iron discharge period:

Similarly, in the calculation process of the total weight of the element i in the molten iron flowing into the molten iron tank in any time period from t_m to t_n, the interpolation or smoothing function C_i (t) is divided into a plurality of sections of linear or curve functions according to the detection time points, then the sections of linear or curve functions are integrated with the products of the curve functions M (t), and finally the integrated values of the sections are added to obtain the total weight of the element i in the molten iron flowing into the molten iron tank in any time period from t_m to t_n.

According to the on-line analysis method of the chemical components of the molten iron in the molten iron tank, the method is based on the weight information of the molten iron flowing into the molten iron tank at different momentsAnd content information of element i in molten iron before flowing into the ladleFitting to obtain a curve function M (t) of the weight of molten iron in the molten iron tank and an interpolation or smoothing function C_i (t) of the content of an element i in the molten iron before flowing into the molten iron tank and changing along with the inflow time t, and calculating to obtain the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge period according to the curve function M (t) and the interpolation or smoothing function C_i (t)And/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAverage content of element i in molten iron tank at arbitrary time t_n in molten iron discharge periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation. Therefore, the method realizes the on-line analysis of the weight and chemical components of the molten iron in the molten iron tank at any time in the whole discharge period or the molten iron flowing into the molten iron tank at a certain period, and is rapid in real time, thereby providing key technical support for the on-line detection and analysis of the chemical components of the molten iron in the molten iron tank in the steel smelting.

In still another aspect, the present invention provides a computer readable storage medium having stored thereon an on-line analysis program of chemical composition of molten iron in a molten iron tank, which when executed by a processor, implements an on-line analysis method of chemical composition of molten iron in a molten iron tank according to the above-described embodiments of the present invention.

In a third aspect of the present invention, an analysis apparatus is provided according to an embodiment of the present invention, which includes a memory, a processor, and an on-line analysis program of molten iron chemical composition in a hot metal ladle stored on the memory and operable on the processor, wherein the processor implements an on-line analysis method according to the molten iron chemical composition in the hot metal ladle when executing the on-line analysis program of molten iron chemical composition in the hot metal ladle.

In a fourth aspect of the present invention, the present invention provides an on-line analysis apparatus for chemical components of molten iron in a hot metal ladle, the apparatus comprising:

The acquisition module is used for acquiring the weight information of the molten iron flowing into the molten iron tank corresponding to different momentsAnd content information of element i in molten iron before flowing into the ladle

Fitting module for corresponding to the weight information of molten iron flowing into the molten iron tank at different momentsFitting to obtain a curve function M (t) of the weight of the molten iron in the molten iron tank along with the inflow time t, and obtaining content information of an element i in the molten iron before the molten iron flows into the molten iron tank according to the corresponding different momentsFitting to obtain an interpolation or smoothing function C_i (t) of the content of the element i in the molten iron before flowing into the molten iron tank along with the change of the inflow time t;

A calculation module for calculating the total weight of the molten iron in the molten iron tank at any time t_n in the molten iron discharge period according to the curve function M (t)And/or the total weight of the molten iron flowing into the molten iron tank within any time period from t_m to t_nAccording to the curve function M (t) and the interpolation or smoothing function C_i (t), calculating to obtain the average content of the element i in the molten iron tank at any time t_n in the molten iron discharging periodInformation and/or average content of element i in molten iron flowing into the ladle in any time period from t_m to t_nInformation.

According to the online analysis device for the chemical components of the molten iron in the molten iron tank, disclosed by the embodiment of the invention, the online analysis of the weight and the chemical components of the molten iron in the molten iron tank at any time in the whole discharge period or the molten iron flowing into the molten iron tank at a certain period is realized, and the method is rapid in real time, so that a key technical support is provided for online detection and analysis of the chemical components of the molten iron in the molten iron tank in steel smelting.

It should be noted that, the specific implementation manner of the online analysis device for the chemical components of molten iron in the molten iron tank according to the embodiment of the present invention is similar to the specific implementation manner of the online analysis method for the chemical components of molten iron in the molten iron tank according to the embodiment of the present invention, please refer to the description of the method section specifically, and in order to reduce redundancy, details are not repeated here.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include an electrical connection (an electronic device) having one or more wires, a portable computer diskette (a magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of techniques known in the art, discrete logic circuits with logic gates for implementing logic functions on data signals, application specific integrated circuits with appropriate combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

The following detailed description of embodiments of the invention is provided for the purpose of illustration only and is not to be construed as limiting the invention.

Example 1

The embodiment provides an online analysis method for chemical components of molten iron in a molten iron tank, which comprises the following steps:

1) In the process of flowing molten iron into the molten iron tank, acquiring content information of element Ti in molten iron before flowing into the molten iron tank corresponding to different moments by adopting an online component analyzerThe test time interval was 3 minutes and the entire discharge period was about 120 minutes as shown in table 1.

In the process of flowing molten iron into the molten iron tank, acquiring weight information of molten iron flowing into the molten iron tank corresponding to different moments by adopting a rail scaleAnd content informationCorresponding molten iron weight informationAs shown in table 2.

TABLE 1

Table 1 continuation

Table 1 continuation

Table 1 continuation

TABLE 2

Table 2 continuation

Table 2 continuation

Table 2 continuation

2) According to the weight information of the molten iron flowing into the molten iron tank corresponding to different moments in Table 2Fitting to obtain molten iron weightA curve fitting function over time t as shown in fig. 2:

M(t)=0.00136t²+0.5197t+3.969

The total weight of molten iron in the molten iron tank at the entire molten iron discharge period, i.e., t_n =120 minutes:

that is, the total weight of molten iron discharged in the entire discharge period is 81.95 tons.

3) According to the content information of Ti element in the molten iron before flowing into the ladle corresponding to different time points in Table 1A curve fitting function C_i (t) of the content of the element Ti in the molten iron changing with the time t is obtained by adopting the piecewise three Hermite interpolation fitting, as shown in fig. 3:

Wherein,

...

Namely, the total weight of element Ti in molten iron in the molten iron tank is 1.3690 tons in the whole discharging period;

the total content of element Ti in the molten iron tank at time t_n = 120 minutes in the whole molten iron discharge period is as follows:

Example 2

The embodiment provides an online analysis method of chemical components of molten iron flowing into a molten iron tank in any time period from t_m to t_n, which comprises the following steps:

1) In the whole molten iron discharge period, the weight of the molten iron obtained by the rail scaleThe change of time t is shown in figure 2, and the weight of molten iron is obtained by data fittingCurve fitting function as a function of time t:

M(t)=0.00136t²+0.5197t+3.969

The total weight of molten iron in the hot metal ladle in the period of 15 to 30 minutes in the molten iron discharge period, that is, the period corresponding to t_n =30 minutes, t_m =15 minutes:

that is, the total weight of molten iron flowing into the molten iron tank during the 15 th to 30 th minute period in the discharging period is 15.02 tons.

2) In the whole molten iron discharge period, as shown in fig. 3, when the Ti element content in the molten iron changes with time t, the total weight of Ti element in the molten iron tank in a period from 15 to 30 minutes in the molten iron discharge period, that is, a period corresponding to t_m =15 minutes and t_n =30 minutes is as follows:

The total content of the element Ti in the molten iron flowing into the molten iron tank in the period of 15 to 30 minutes in the molten iron discharging period, that is, the period corresponding to t_m =15 minutes, t_n =30 minutes is:

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

Translated fromChinese

1.一种铁水罐内熔融铁水化学成分的在线分析方法，其特征在于，包括：1. An online analysis method for the chemical composition of molten iron in a molten iron tank, comprising:（1）在铁水流入铁水罐的过程中，获取不同时刻对应的流入铁水罐中的铁水重量信息以及流入铁水罐前的铁水中的元素i的含量信息；(1) During the process of molten iron flowing into the molten iron tank, obtain the weight information of the molten iron flowing into the molten iron tank at different times And the content of element i in the molten iron before it flows into the molten iron ladle ;（2）根据不同时刻对应的流入铁水罐中的铁水重量信息，拟合得到所述铁水罐中的铁水重量随流入时间t变化的曲线函数；以及根据不同时刻对应的流入铁水罐前的铁水中的元素i的含量信息，拟合得到流入铁水罐前中的铁水中的元素i的含量随流入时间t变化的插值或平滑处理函数；(2) The weight of the molten iron flowing into the molten iron tank at different times , the curve function of the weight of the molten iron in the molten iron tank changing with the inflow time t is obtained by fitting ; and the content information of element i in the molten iron before it flows into the molten iron ladle at different times , the interpolation or smoothing function of the content of element i in the molten iron before it flows into the molten iron ladle as the inflow time t changes is obtained by fitting ;（3）根据所述曲线函数，计算获得铁水排放周期内任意时刻时铁水罐中铁水总重量和/或任意至时段内流入铁水罐中铁水总重量；以及根据所述曲线函数和所述插值或平滑处理函数，计算得到铁水排放周期内任意时刻时铁水罐中铁水中的元素i的平均含量信息和/或任意至时段内流入铁水罐中铁水中的元素i的平均含量信息；(3) According to the curve function , calculate and obtain the molten iron discharge cycle at any time Total weight of molten iron in the ladle and/or any to Total weight of molten iron flowing into the molten iron tank during the period ; and according to the curve function and the interpolation or smoothing function , calculate the molten iron discharge cycle at any time The average content of element i in the molten iron in the molten iron tank at Information and/or any to The average content of elementi in the molten iron flowing into the molten iron tank during the period information;在步骤（3）中，所述铁水排放周期内，任意时刻时流入铁水罐中铁水总重量的计算公式为：In step (3), during the molten iron discharge cycle, at any time Total weight of molten iron flowing into the molten iron tank The calculation formula is:其中，M()为铁水罐的净重，M()为时刻铁水罐的总重量；Among them,M ( ) is the net weight of the molten iron tank,M ( )for Total weight of the molten iron tank at all times;所述铁水排放周期内，任意至时段内流入铁水罐中铁水总重量的计算公式为：During the molten iron discharge cycle, any to Total weight of molten iron flowing into the molten iron tank during the period The calculation formula is:其中，M()为时刻铁水罐的总重量，M()为时刻铁水罐的总重量；Among them,M ( )for The total weight of the molten iron tank at this moment,M ( )for Total weight of the molten iron tank at all times;在步骤（3）中，所述铁水排放周期内，任意时刻时流入铁水罐中铁水中的元素i的总重量为所述曲线函数和所述插值或平滑处理函数的乘积的积分面积，计算公式为：In step (3), during the molten iron discharge cycle, at any time The total weight of elementi in the molten iron flowing into the molten iron ladle is the curve function and the interpolation or smoothing function The integral area of the product of is calculated as:所述铁水排放周期内，任意时刻时流入铁水罐中铁水中元素i的含量为：During the molten iron discharge cycle, at any time The content of elementi in the molten iron flowing into the molten iron tank at the time is:。 .2.根据权利要求1所述的方法，其特征在于，在步骤（1）中，采用在线成分分析仪获取不同时刻对应的流入铁水罐前的铁水中的元素i的含量信息。2. The method according to claim 1, characterized in that in step (1), an online component analyzer is used to obtain the content information of element i in the molten iron before it flows into the molten iron ladle at different times .3.根据权利要求1所述的方法，其特征在于，在步骤（1）中，采用轨道衡获取不同时刻对应的流入铁水罐中的铁水重量信息。3. The method according to claim 1 is characterized in that, in step (1), a track scale is used to obtain the weight information of the molten iron flowing into the molten iron tank at different times. .4.根据权利要求1所述的方法，其特征在于，在步骤（1）中，间隔2-6分钟获取不同时刻对应的流入铁水罐中的铁水重量信息以及流入铁水罐前的铁水中的元素i的含量信息。4. The method according to claim 1 is characterized in that, in step (1), the weight information of the molten iron flowing into the molten iron tank at different times is obtained at intervals of 2-6 minutes. And the content of element i in the molten iron before it flows into the molten iron ladle .5.根据权利要求1所述的方法，其特征在于，在步骤（1）中，至少获取20个不同时刻对应的流入铁水罐中的铁水重量信息以及流入铁水罐前的铁水中的元素i的含量信息。5. The method according to claim 1, characterized in that in step (1), at least 20 corresponding weight information of the molten iron flowing into the molten iron tank at different times is obtained. And the content of element i in the molten iron before it flows into the molten iron ladle .6.根据权利要求1所述的方法，其特征在于，在步骤（1）中，所述元素i为Si、S、Mn、Ti、Cu、P、Sn、As和C中的至少一种。6. The method according to claim 1, characterized in that in step (1), the elementi is at least one of Si, S, Mn, Ti, Cu, P, Sn, As and C.7.根据权利要求1所述的方法，其特征在于，在步骤（3）中，所述铁水排放周期内，任意至时段内流入铁水罐中铁水中的元素i的总重量为所述曲线函数和所述插值或平滑处理函数的乘积的积分面积，计算公式为：7. The method according to claim 1, characterized in that, in step (3), during the molten iron discharge cycle, any to The total weight of element i in the molten iron flowing into the molten iron tank during the period is the curve function and the interpolation or smoothing function The integral area of the product of is calculated as:所述铁水排放周期内任意至检测时段内流入铁水罐中铁水中元素i的平均含量：Any time during the molten iron discharge cycle to The average content of elementi in the molten iron flowing into the molten iron tank during the detection period:。 .8.一种计算机可读存储介质，其特征在于，其上存储有铁水罐内熔融铁水化学成分的在线分析程序，该铁水罐内熔融铁水化学成分的在线分析程序被处理器执行时实现根据权利要求1-7 中任一项所述的铁水罐内熔融铁水化学成分的在线分析方法。8. A computer-readable storage medium, characterized in that an online analysis program for the chemical composition of molten iron in a molten iron ladle is stored thereon, and when the online analysis program for the chemical composition of molten iron in a molten iron ladle is executed by a processor, an online analysis method for the chemical composition of molten iron in a molten iron ladle according to any one of claims 1-7 is implemented.9.一种分析设备，其特征在于，包括存储器、处理器及存储在存储器上并可在处理器上运行的铁水罐内熔融铁水化学成分的在线分析程序，所述处理器执行所述铁水罐内熔融铁水化学成分的在线分析程序时，实现根据权利要求1-7中任一项所述的铁水罐内熔融铁水化学成分的在线分析方法。9. An analysis device, characterized in that it comprises a memory, a processor, and an online analysis program for the chemical composition of the molten iron in the molten iron ladle stored in the memory and executable on the processor, wherein when the processor executes the online analysis program for the chemical composition of the molten iron in the molten iron ladle, the online analysis method for the chemical composition of the molten iron in the molten iron ladle according to any one of claims 1-7 is implemented.10.一种用于实施权利要求1-7中任一项所述铁水罐内熔融铁水化学成分的在线分析方法的分析装置，其特征在于，包括：10. An analysis device for implementing the on-line analysis method of the chemical composition of molten iron in a molten iron ladle as claimed in any one of claims 1 to 7, characterized in that it comprises:获取模块，用于获取不同时刻对应的流入铁水罐中的铁水重量信息以及流入铁水罐前的铁水中的元素i的含量信息；The acquisition module is used to obtain the weight information of the molten iron flowing into the molten iron tank at different times And the content of element i in the molten iron before it flows into the molten iron ladle ;拟合模块，用于根据不同时刻对应的流入铁水罐中的铁水重量信息，拟合得到所述铁水罐中的铁水重量随流入时间t变化的曲线函数；以及根据不同时刻对应的流入铁水罐前的铁水中的元素i的含量信息，拟合得到流入铁水罐前中的铁水中的元素i的含量随流入时间t变化的插值或平滑处理函数；The fitting module is used to calculate the weight of the molten iron flowing into the molten iron tank at different times. , the curve function of the weight of the molten iron in the molten iron tank changing with the inflow time t is obtained by fitting ; and the content information of element i in the molten iron before it flows into the molten iron ladle at different times , the interpolation or smoothing function of the content of element i in the molten iron before it flows into the molten iron ladle as the inflow time t changes is obtained by fitting ;计算模块，用于根据所述曲线函数，计算获得铁水排放周期内任意时刻时铁水罐中铁水总重量和/或任意至时段内流入铁水罐中铁水总重量；以及根据所述曲线函数和所述插值或平滑处理函数，计算得到铁水排放周期内任意时刻时铁水罐中铁水中的元素i的平均含量信息和/或任意至时段内流入铁水罐中铁水中的元素i的平均含量信息；A calculation module is used to calculate the curve function according to the curve function. , calculate and obtain the molten iron discharge cycle at any time Total weight of molten iron in the ladle and/or any to Total weight of molten iron flowing into the molten iron tank during the period ; and according to the curve function and the interpolation or smoothing function , calculate the molten iron discharge cycle at any time The average content of element i in the molten iron in the molten iron tank at Information and/or any to The average content of elementi in the molten iron flowing into the molten iron tank during the period information;在所述铁水排放周期内，任意时刻时流入铁水罐中铁水总重量的计算公式为：During the molten iron discharge cycle, at any time Total weight of molten iron flowing into the molten iron tank The calculation formula is:其中，M()为铁水罐的净重，M()为时刻铁水罐的总重量；Among them,M ( ) is the net weight of the molten iron tank,M ( )for Total weight of the molten iron tank at all times;所述铁水排放周期内，任意至时段内流入铁水罐中铁水总重量的计算公式为：During the molten iron discharge cycle, any to Total weight of molten iron flowing into the molten iron tank during the period The calculation formula is:其中，M()为时刻铁水罐的总重量，M()为时刻铁水罐的总重量；Among them,M ( )for The total weight of the molten iron tank at this moment,M ( )for Total weight of the molten iron tank at all times;在所述铁水排放周期内，任意时刻时流入铁水罐中铁水中的元素i的总重量为所述曲线函数和所述插值或平滑处理函数的乘积的积分面积，计算公式为：During the molten iron discharge cycle, at any time The total weight of elementi in the molten iron flowing into the molten iron ladle is the curve function and the interpolation or smoothing function The integral area of the product of is calculated as:所述铁水排放周期内，任意时刻时流入铁水罐中铁水中元素i的含量为：During the molten iron discharge cycle, at any time The content of elementi in the molten iron flowing into the molten iron tank at the time is:。 .