TWI830423B - Method for controlling distributed material surface of distributor of sintering machine - Google Patents
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Translated fromChinese本發明是關於一種燒結機的佈料槽的佈料面的控制方法。The invention relates to a method for controlling the distribution surface of a distribution trough of a sintering machine.
在高爐煉製鐵水過程中，鐵礦燒結是不可或缺的製程，尤其在現代化大型高爐生產中需要使用大量燒結礦。在目前習知的燒結礦生產過程中，為了提高燒結礦的品質、降低製程能耗，普遍採用燒結料層平均厚度回饋控制法，即通過測厚儀來測量料層表面的橫向層厚平均值，從而據以調節進料滾筒(Roll Feeder)轉速，並分別調節多扇微調閘門的開度，使燒結台車內的整體料層高度控制在一個水平線上。然而，相同的水平高度卻非有相同的料層透氣性。In the process of refining molten iron in a blast furnace, iron ore sintering is an indispensable process, especially in the production of modern large-scale blast furnaces, which require the use of large amounts of sinter. In the current sinter production process, in order to improve the quality of the sinter and reduce the energy consumption of the process, the average thickness of the sinter material layer feedback control method is commonly used, that is, the average thickness of the lateral layer on the surface of the material layer is measured by a thickness gauge. , thereby adjusting the rotation speed of the feed roller (Roll Feeder) and adjusting the opening of multiple fine-tuning gates respectively, so that the overall material layer height in the sintering trolley is controlled on a horizontal line. However, the same level does not have the same breathability of the material layer.
另一方面，燒結機之進料梭車是位於燒結機機頭之佈料槽上方，佈料槽之進料主要是透過上方的進料梭車內之輸送帶來投放燒結生料。佈料槽進料時，進料梭車反覆地由佈料槽之一端行走至另一端，因此，燒結機之進料梭車來回佈料於佈料槽之料位變化，對於燒結過程料床橫向透氣性的好壞，也同時扮演著關鍵角色。On the other hand, the feed shuttle of the sintering machine is located above the distribution trough of the sintering machine head. The feed of the distribution trough mainly puts the sintered raw materials through the conveyor belt in the upper feed shuttle. When the distribution trough is feeding, the feeding shuttle repeatedly travels from one end of the distribution trough to the other end. Therefore, the feeding shuttle of the sintering machineThe change in material level between the material bed and the material bed during the sintering process also plays a key role in the transverse air permeability of the material bed during the sintering process.
目前各地燒結場作法，均是先目視進料梭車所佈生料與壁面間曲線，再以人工調整進料梭車行進動態。然而，此作法不僅耗時費力，且所佈出料面曲線並不穩定，經常造成大顆粒滾向佈料槽某一端，進而導致燒結台車漏風與燒結回料增加。The current practice in sintering plants in various places is to first visually observe the curve between the raw material spread by the feed shuttle and the wall surface, and then manually adjust the movement of the feed shuttle. However, this method is not only time-consuming and labor-intensive, but also the curve of the discharge surface is unstable, often causing large particles to roll to one end of the distribution trough, which in turn leads to air leakage from the sintering trolley and an increase in sintering return material.
本發明之目的在於提出一種燒結機的佈料槽的佈料面的控制方法，包括：藉由設置於佈料槽上方的測距裝置來掃描佈料槽的佈料面，以取得佈料槽沿水平方向所劃分的多個橫向區中每一者的料面與測距裝置間沿垂直方向的距離平均值；根據每個橫向區的距離平均值來算出每個橫向區的佈料均勻指標；及根據每個橫向區的佈料均勻指標來調整進料梭車於每個橫向區的上方平移的停留時間與行車速率之至少一者。The object of the present invention is to provide a method for controlling the distribution surface of the distribution trough of a sintering machine, which includes: scanning the distribution surface of the distribution trough with a distance measuring device disposed above the distribution trough to obtain the distribution trough. The average distance along the vertical direction between the material surface and the distance measuring device in each of the multiple transverse zones divided along the horizontal direction; calculate the cloth uniformity index of each transverse zone based on the average distance of each transverse zone ; And adjust at least one of the dwell time and the driving speed of the feed shuttle in translation above each transverse zone according to the cloth uniformity index of each transverse zone.
在一些實施例中，上述燒結機的佈料槽的佈料面的控制方法更包括：將每個橫向區的距離平均值進行加總後再取平均來算出加總平均；及將所述多個橫向區之一者的距離平均值除以加總平均來算出所述多個橫向區之該者的佈料均勻指標。In some embodiments, the method for controlling the distribution surface of the distribution trough of the above-mentioned sintering machine further includes: adding up the average distances of each transverse area and then taking the average to calculate the summed average; and dividing the multiple distances. The average distance of one of the transverse areas is divided by the summed average to calculate the cloth uniformity index of the one of the plurality of transverse areas.
在一些實施例中，上述燒結機的佈料槽的佈料面的控制方法更包括：調整進料梭車於每個橫向區的上方平移的停留時間與行車速率之至少一者，以使所述多個橫向區中的第一橫向區的佈料均勻指標大於所述多個橫向區中的第二橫向區的佈料均勻指標，其中第一橫向區較第二橫向區更靠近佈料槽沿水平方向的中央處。In some embodiments, the method for controlling the distribution surface of the distribution trough of the above-mentioned sintering machine further includes: adjusting the feed shuttle to translate above each transverse area.At least one of the residence time and the driving speed is such that the cloth uniformity index of the first transverse zone among the plurality of transverse zones is greater than the cloth uniformity index of the second transverse zone among the plurality of transverse zones, wherein The first transverse area is closer to the center of the distribution chute along the horizontal direction than the second transverse area.
在一些實施例中，上述燒結機的佈料槽的佈料面的控制方法更包括：藉由增加進料梭車於所述多個橫向區之一者的上方的停留時間來減少所述多個橫向區之該者的佈料均勻指標；及藉由減少進料梭車於所述多個橫向區之該者的上方的停留時間來增加所述多個橫向區之該者的佈料均勻指標。In some embodiments, the method for controlling the distribution surface of the distribution trough of the above-mentioned sintering machine further includes: reducing the amount of time the feed shuttle car stays above one of the plurality of transverse areas. The cloth uniformity index of the transverse area; and increasing the cloth uniformity of the transverse area by reducing the residence time of the feed shuttle car above the transverse area. indicators.
在一些實施例中，上述燒結機的佈料槽的佈料面的控制方法更包括：藉由增加進料梭車於所述多個橫向區之一者的上方平移的行車速率來增加所述多個橫向區之該者的佈料均勻指標；及藉由減少進料梭車於所述多個橫向區之該者的上方平移的行車速率來減少所述多個橫向區之該者的佈料均勻指標。In some embodiments, the method for controlling the distribution surface of the distribution trough of the sintering machine further includes: increasing the translation speed of the feed shuttle above one of the plurality of transverse areas. The distribution uniformity index of the plurality of transverse areas; and reducing the driving speed of the feed shuttle car in translation above the plurality of transverse areas to reduce the distribution uniformity index of the plurality of transverse areas. Material uniformity index.
在一些實施例中，上述測距裝置為光學雷達(LiDAR)裝置。In some embodiments, the distance measuring device is a light radar (LiDAR) device.
在一些實施例中，所述多個橫向區分別對應於位於佈料槽下方的多個微調閘門(sub-gates)。In some embodiments, the plurality of transverse areas respectively correspond to a plurality of fine-tuning gates (sub-gates) located below the distribution chute.
在一些實施例中，所述多個微調閘門在佈料槽上的垂直投影分別落在所述多個橫向區上。In some embodiments, the vertical projections of the plurality of fine-tuning gates on the distribution chute respectively fall on the plurality of lateral areas.
在一些實施例中，每個橫向區的距離平均值為每個橫向區的料面上的多個料面點與測距裝置間沿垂直方向的多個距離值的平均。In some embodiments, the average distance of each transverse zone is the distance in the vertical direction between multiple material surface points on the material surface of each transverse zone and the distance measuring device.Average of multiple distance values.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.
100:佈料槽100: Cloth trough
110:生料110:Raw ingredients
200:主閘門200: Main gate
201,202,203,204,205,206:微調閘門201,202,203,204,205,206: Fine adjustment gate
300:測距裝置300: Distance measuring device
400:進料梭車400: Feed shuttle car
1000:控制方法1000:Control method
h1,h2,h3,h4,h5,h6:距離平均值h1 , h2 , h3 , h4 , h5 , h6 : average distance
S1,S2,S3:步驟S1, S2, S3: steps
X:水平方向X: horizontal direction
Y:垂直方向Y: vertical direction
Z1,Z2,Z3,Z4,Z5,Z6:橫向區Z1 , Z2 , Z3 , Z4 , Z5 , Z6 : transverse zone
從以下結合所附圖式所做的詳細描述，可對本發明之態樣有更佳的了解。需注意的是，根據業界的標準實務，各特徵並未依比例繪示。事實上，為了使討論更為清楚，各特徵的尺寸都可任意地增加或減少。The aspect of the present invention can be better understood from the following detailed description combined with the accompanying drawings. It should be noted that, in accordance with standard industry practice, features are not drawn to scale. In fact, the dimensions of each feature may be arbitrarily increased or decreased for clarity of discussion.
[圖1]係根據本發明的實施例之燒結機的佈料槽的佈料面的控制方法的流程圖。[Fig. 1] is a flowchart of a method of controlling the distribution surface of the distribution trough of the sintering machine according to an embodiment of the present invention.
[圖2]係根據本發明的實施例之圖1的控制方法所對應的系統示意圖。[Fig. 2] is a system schematic diagram corresponding to the control method of Fig. 1 according to an embodiment of the present invention.
以下仔細討論本發明的實施例。然而，可以理解的是，實施例提供許多可應用的概念，其可實施於各式各樣的特定內容中。所討論、揭示之實施例僅供說明，並非用以限定本發明之範圍。關於本文中所使用之『第一』、『第二』、...等，並非特別指次序或順位的意思，其僅為了區別以相同技術用語描述的元件或操作。Embodiments of the present invention are discussed in detail below. It is to be appreciated, however, that the embodiments provide many applicable concepts that can be embodied in a wide variety of specific contexts. The embodiments discussed and disclosed are for illustration only and are not intended to limit the scope of the invention. The terms "first", "second", ..., etc. used in this article do not specifically refer to the order or order, but are only used to distinguish components or operations described with the same technical terms.
根據文獻，燒結台車內的料層橫向分佈特徵與燒結機之佈料槽內的佈料面橫向分佈特徵具有繼承性，且偏析佈料槽對橫向偏析影響較小。因此，本發明並非分析燒結台車內的料層橫向分佈，而是提前由燒結機之佈料槽之佈料面橫向偏析來控制佈料面橫向分佈，以獲得較佳的佈料面。According to the literature, the lateral distribution characteristics of the material layer in the sintering trolley are inherited from the lateral distribution characteristics of the distribution surface in the distribution trough of the sintering machine, and the segregation distribution trough has little impact on lateral segregation. Therefore, the present invention does not analyze sinteringThe lateral distribution of the material layer in the trolley is controlled in advance by the lateral segregation of the distribution surface of the sintering machine's distribution trough to obtain a better distribution surface.
圖1係根據本發明的實施例之燒結機的佈料槽的佈料面的控制方法1000的流程圖。圖2係根據本發明的實施例之圖1的控制方法所對應的系統示意圖。請一併參照圖1與圖2。於控制方法1000的步驟S1，藉由設置於佈料槽100的正上方的測距裝置300來掃描佈料槽100中的生料110所建構出的佈料面，以取得佈料槽100沿水平方向X所劃分的多個橫向區Z1、Z2、Z3、Z4、Z5、Z6中每一者的料面與測距裝置300間沿垂直方向Y的距離(垂直距離)平均值h1、h2、h3、h4、h5、h6。FIG. 1 is a flow chart of a
在本發明的實施例中，圖2所示的測距裝置300為光學雷達(LiDAR)裝置，用以對佈料槽100中的生料110所建構出的佈料面進行連續掃描，但本發明不限於此，其他非接觸式的測距裝置也在本發明的範圍中。In the embodiment of the present invention, the
在本發明的實施例中，圖2所示的六個橫向區Z1、Z2、Z3、Z4、Z5、Z6分別對應於位於佈料槽100下方主閘門(main-gate)200下方的六個微調閘門(sub-gates)201、202、203、204、205、206，換言之，橫向區的數量是根據微調閘門的數量而定。具體而言，六個微調閘門201、202、203、204、205、206在佈料槽100上的垂直投影分別落在六個橫向區Z1、Z2、Z3、Z4、Z5、Z6上。應注意的是，圖2所示的橫向區與微調閘門的數量6僅為例示，本發明不限於此。In the embodiment of the present invention, the six transverse zones Z1 , Z2 , Z3 , Z4 , Z5 , and Z6 shown in FIG. 2 respectively correspond to the main gates (main-gate) located below the
在本發明的實施例中，每個橫向區的距離平均值為每個橫向區的料面上的多個料面點與測距裝置間沿垂直方向的多個距離(垂直距離)值的平均。具體而言，根據測距裝置300對於佈料槽100的佈料面的掃描結果可以得知測距裝置300相對於佈料面上的每個料面點的直線距離，再例如藉由點到直線的距離公式、畢氏定理和/或直角三角形的邊角關係等等的數學換算方式即可得出測距裝置300相對於佈料面上的每個料面點沿垂直方向的垂直距離。In the embodiment of the present invention, the average distance of each transverse zone is the average of multiple distances (vertical distance) values in the vertical direction between multiple material surface points on the material surface of each transverse zone and the distance measuring device. . Specifically, according to the scanning result of the
於控制方法1000的步驟S2，根據每個橫向區Z1、Z2、Z3、Z4、Z5、Z6的距離平均值h1、h2、h3、h4、h5、h6來算出每個橫向區Z1、Z2、Z3、Z4、Z5、Z6的佈料均勻指標δ1、δ2、δ3、δ4、δ5、δ6。In step S2 of the
在本發明的實施例中，將每個橫向區Z1、Z2、Z3、Z4、Z5、Z6的距離平均值h1、h2、h3、h4、h5、h6進行加總後(即：h1+h2+h3+h4+h5+h6)再取平均來算出加總平均h(即：(h1+h2+h3+h4+h5+h6)/6)；及將所述多個橫向區之一者(例如：Zi，i=1~6)的距離平均值hi除以加總平均h來算出所述多個橫向區之該者的佈料均勻指標δi。換言之，佈料均勻指標δi的算式如下式(a)所示：
具體而言，由上述式(a)與圖2可知，當某一橫向區的佈料均勻指標大於另一橫向區的佈料均勻指標時，代表該某一橫向區的料面低於該另一橫向區的料面，換言之，本發明即可藉由各個橫向區的佈料均勻指標來得知各個橫向區的料面間的高低關係。Specifically, from the above formula (a) and Figure 2, it can be seen that when the cloth uniformity index of a certain transverse area is greater than the cloth uniformity index of another transverse area, it means that the material surface of a certain transverse area is lower than that of the other transverse area. The material surface of a transverse zone, in other words,The present invention can know the height relationship between the material surfaces in each transverse area through the cloth uniformity index of each transverse area.
於控制方法1000的步驟S3，根據每個橫向區的佈料均勻指標來對應地調整位於佈料槽100上方的進料梭車400於每個橫向區的上方的停留時間和/或進料梭車400於每個橫向區的上方平移的行車速率。In step S3 of the
一般而言，若是使得佈料槽的佈料面由左到右有著相同的料面高度並不能有較佳的生產結果，這是因為對於燒結台車而言，相同的料面高度卻非有相同的料層透氣性。根據燒結廠實操經驗，進料梭車如能於佈料槽佈料出類似微笑曲線的佈料面(例如圖2所示的佈料槽100內的生料110的佈料面)，將會有利於提高燒結礦的品質且降低製程能耗。上述之微笑曲線指的是：於佈料槽之兩側段有較高的料位以及較細的生料顆粒，於佈料槽之中間段有較低的料位以及較粗的生料顆粒。上述之微笑曲線的佈料槽的佈料面將有利於佈料槽內的生料自佈料槽的多個微調閘門投放到位於佈料槽下方的燒結台車時能夠有以下優點：(1)一般燒結台車之兩側段之底部並非小爐條而是無間隙之盲板，當燒結台車行進到機尾時，燒結台車之兩側段會因燒結成品收縮而產生空隙溝槽，若於燒結台車之兩側段佈予較細的生料顆粒，可減緩生料收縮，進而降低燒結台車之兩側段之間隙漏氣，增加燒結台車整體有效風量(即產量)；(2)燒結台車之兩側段若佈予較細的生料顆粒，會使局部抽氣阻力增加，導致大部分抽氣氣流會穿過燒結台車之中間段，此時燒結台車之中間段若佈予較粗的生料顆粒，可使燒結台車上的料層的透氣性更為良好。換言之，佈料槽之兩側段之較細的生料顆粒可減緩燒結台車之兩側段的漏氣以及增加燒結台車之中間段的有效風量，且佈料槽之中間段之較粗的生料顆粒可使透氣性更良好。具體而言，上述之微笑曲線的佈料槽的佈料面可降低燒結台車之兩側段之間隙漏氣，以增加燒結台車整體有效風量(即產量)，並使燒結台車之中間區段透氣性更為良好，進而增加燒結礦產量。Generally speaking, if the cloth surface of the distribution trough has the same material surface height from left to right, it will not produce better production results. This is because for the sintering trolley, the same material surface height does not have the same material surface height. The breathability of the material layer. According to the practical experience of the sintering plant, if the feed shuttle can produce a cloth surface similar to a smile curve in the cloth trough (for example, the cloth surface of the
根據上述，在本發明的實施例中，燒結機的佈料槽的佈料面的控制方法更包括：調整進料梭車於每個橫向區的上方平移的停留時間與行車速率之至少一者，以使所述多個橫向區中的第一橫向區的佈料均勻指標大於所述多個橫向區中的第二橫向區的佈料均勻指標(從而使得進料梭車於佈料槽佈料出類似微笑曲線的佈料面)，其中第一橫向區較第二橫向區更靠近佈料槽沿水平方向X的中央處。例如第一橫向區為Z3，而第二橫向區為Z2或Z1。例如第一橫向區為Z2，而第二橫向區為Z1。例如第一橫向區為Z4，而第二橫向區為Z5或Z6。例如第一橫向區為Z5，而第二橫向區為Z6。According to the above, in an embodiment of the present invention, the method for controlling the distribution surface of the distribution trough of the sintering machine further includes: adjusting at least one of the dwell time and the driving speed of the feed shuttle in translation above each transverse area. , so that the cloth uniformity index of the first transverse zone among the plurality of transverse zones is greater than the cloth uniformity index of the second transverse zone among the plurality of transverse zones (thus causing the feeding shuttle to move the cloth in the distribution chute A cloth surface similar to a smile curve is produced), in which the first transverse area is closer to the center of the cloth chute along the horizontal direction X than the second transverse area. For example, the first transverse zone is Z3 and the second transverse zone is Z2 or Z1 . For example, the first transverse zone is Z2 and the second transverse zone is Z1 . For example, the first transverse zone is Z4 and the second transverse zone is Z5 or Z6 . For example, the first transverse zone is Z5 and the second transverse zone is Z6 .
於控制方法1000的步驟S3中，要提高某一橫向區的料面高度以減少其佈料均勻指標的方式包括以下至少一者：(1)增加進料梭車於該某一橫向區的上方的停留時間；(2)減少進料梭車於該某一橫向區的上方平移的行車速率。於控制方法1000的步驟S3中，要降低某一橫向區的料面高度以增加其佈料均勻指標的方式包括以下至少一者：(1)減少進料梭車於該某一橫向區的上方的停留時間；(2)減少進料梭車於該某一橫向區的上方平移的行車速率。換言之，在本發明的實施例中，燒結機的佈料槽的佈料面的控制方法更包括：藉由增加進料梭車於所述多個橫向區之一者的上方的停留時間來減少所述多個橫向區之該者的佈料均勻指標；及藉由減少進料梭車於所述多個橫向區之該者的上方的停留時間來增加所述多個橫向區之該者的佈料均勻指標。換言之，在本發明的實施例中，燒結機的佈料槽的佈料面的控制方法更包括：藉由增加進料梭車於所述多個橫向區之一者的上方平移的行車速率來增加所述多個橫向區之該者的佈料均勻指標；及藉由減少進料梭車於所述多個橫向區之該者的上方平移的行車速率來減少所述多個橫向區之該者的佈料均勻指標。In step S3 of the
綜合上述，本發明提出一種燒結機的佈料槽的佈料面的控制方法，藉由每個橫向區的佈料均勻指標來調整進料梭車於每個橫向區的上方平移的停留時間與行車速率之至少一者，以使得進料梭車於佈料槽佈料出類似微笑曲線的佈料面，從而降低燒結台車之兩側段之間隙漏氣、增加燒結台車整體有效風量、增加燒結礦產量。Based on the above, the present invention proposes a method for controlling the distribution surface of the distribution trough of a sintering machine, which uses the distribution uniformity index of each transverse area to adjust the dwell time and translation time of the feed shuttle above each transverse area. At least one of the driving speeds is used to make the feed shuttle produce a smiling curve-like cloth surface in the cloth trough, thereby reducing air leakage in the gaps between the two sides of the sintering trolley, increasing the overall effective air volume of the sintering trolley, and increasing sintering Mineral output.
以上概述了數個實施例的特徵，因此熟習此技藝者可以更了解本發明的態樣。熟習此技藝者應了解到，其可輕易地把本發明當作基礎來設計或修改其他的製程與結構，藉此實現和在此所介紹的這些實施例相同的目標及/或達到相同的優點。熟習此技藝者也應可明白，這些等效的建構並未脫離本發明的精神與範圍，並且他們可以在不脫離本發明精神與範圍的前提下做各種的改變、替換與變動。The features of several embodiments are summarized above, so that those skilled in the art can better understand the aspects of the present invention. Those skilled in the art should understand that they can easily use the present invention as a basis to design or modify other processes and structures.This achieves the same goals and/or achieves the same advantages as the embodiments introduced here. Those skilled in the art should also understand that these equivalent structures do not deviate from the spirit and scope of the present invention, and they can make various changes, substitutions and changes without departing from the spirit and scope of the present invention.
1000:控制方法1000:Control method
S1,S2,S3:步驟S1, S2, S3: steps
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| CN102693927A (en)* | 2011-03-24 | 2012-09-26 | 初星太阳能公司 | Dynamic system for variable heating or cooling of linearly conveyed substrates |
| JP5521468B2 (en)* | 2009-09-30 | 2014-06-11 | Ｊｆｅスチール株式会社 | Sintering raw material charging state detection device, sintering machine using the same, and method for producing sintered ore |
| CN113582704A (en)* | 2015-06-29 | 2021-11-02 | 康宁股份有限公司 | Production line, method, and sintered product |
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| JP5521468B2 (en)* | 2009-09-30 | 2014-06-11 | Ｊｆｅスチール株式会社 | Sintering raw material charging state detection device, sintering machine using the same, and method for producing sintered ore |
| CN102693927A (en)* | 2011-03-24 | 2012-09-26 | 初星太阳能公司 | Dynamic system for variable heating or cooling of linearly conveyed substrates |
| CN113582704A (en)* | 2015-06-29 | 2021-11-02 | 康宁股份有限公司 | Production line, method, and sintered product |
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