技术领域technical field
本发明创造属于物料的粉碎技术领域，特别是涉及一种使用立式辊磨系统的粉磨工艺。The invention belongs to the technical field of material crushing, and in particular relates to a grinding process using a vertical roller mill system.
背景技术Background technique
目前，立式辊磨被广泛用于矿物原料、燃料、水泥和矿渣等物料的粉磨。由于立式辊磨采用了料床粉磨原理，粉磨效率较高，与球磨机系统相比，立式辊磨的粉磨电耗降低50％，但是通风电耗比球磨机高，所以整个粉磨系统电耗降低30％左右。目前，立式辊磨系统已经成为粉磨多种物料的首选方案。At present, vertical roller mills are widely used in the grinding of materials such as mineral raw materials, fuel, cement and slag. Because the vertical roller mill adopts the material bed grinding principle, the grinding efficiency is high. Compared with the ball mill system, the power consumption of the vertical roller mill is reduced by 50%, but the ventilation power consumption is higher than that of the ball mill, so the whole grinding The power consumption of the system is reduced by about 30%. At present, the vertical roller mill system has become the preferred solution for grinding various materials.
传统的立式辊磨系统如图2所示：新喂物料与外循环物料一起经过锁风装置沿着下料管落到磨盘中央，随着磨盘的旋转，物料在离心力的作用下从磨盘中心向边缘运动，同时受到磨辊的挤压而被粉碎。粉碎后的物料在磨盘边缘处被从风环进入的气体带起，粗颗粒落到磨盘再粉磨，较细颗粒被带到选粉机进行分选，粗粉回磨，合格产品由袋收尘器收集。部分难磨的大颗粒物料落入风环，通过吐渣口进入外循环系统，经过除铁后再次进入辊磨与新喂物料一起粉磨。The traditional vertical roller mill system is shown in Figure 2: the newly fed material and the externally circulated material fall to the center of the grinding table through the air lock device along the feeding pipe. With the rotation of the grinding table, the material is discharged from the center of the grinding table Moving to the edge, it is crushed by the extrusion of the grinding roller at the same time. The pulverized material is carried up by the gas entering from the air ring at the edge of the grinding disc, the coarse particles fall to the grinding disc for grinding, and the finer particles are taken to the powder classifier for sorting, the coarse powder is returned to grinding, and the qualified products are collected by the bag Dust collection. Part of the hard-to-grind large-grained material falls into the air ring, enters the external circulation system through the slag discharge port, and enters the roller mill again after iron removal to be ground together with the newly fed material.
然而，该系统通风量、通风阻力都较大，在实际生产中循环风机电耗较高。特别是针对铁矿石等密度较高而含水量又很低的物料，磨机通风主要用于物料输送，而风力提升比机械提升所需能耗高很多。However, the ventilation volume and ventilation resistance of this system are large, and the power consumption of the circulating fan is relatively high in actual production. Especially for iron ore and other materials with high density and low water content, mill ventilation is mainly used for material transportation, and wind lifting requires much higher energy consumption than mechanical lifting.
发明内容Contents of the invention
本发明创造为解决公知技术中存在的技术问题而提供一种立式辊磨系统，该系统通风阻力小。The invention provides a vertical roller mill system for solving the technical problems in the known technology, and the ventilation resistance of the system is small.
一种立式辊磨系统，包括立式辊磨和配料机构，还包括有V型选粉机，配料机构的下游与V型选粉机的入料口联通，立式辊磨的出料口与V型选粉机的入料口通过甲提升输送机联通，V型选粉机的粗料出料口与立式辊磨的入料口通过乙提升输送机联通；A vertical roller mill system, including a vertical roller mill and a batching mechanism, and also includes a V-shaped powder separator, the downstream of the batching mechanism is connected with the inlet of the V-shaped powder separator, and the outlet of the vertical roller mill The material inlet of the V-type powder separator is connected through the A lifting conveyor, and the coarse material outlet of the V-type powder separator is connected with the material inlet of the vertical roller mill through the B lifting conveyor;
循环风机，V型选粉机进风口与循环风机的出风口通过循环风管联通；The circulation fan, the air inlet of the V-shaped powder classifier and the air outlet of the circulation fan are connected through the circulation air pipe;
动态选粉机，V型选粉机的细料出料口与动态选粉机的入料口联通，动态选粉机的粗料出料口与立式辊磨的入料口联通；Dynamic powder separator, the fine material outlet of the V-shaped powder separator is connected with the feed inlet of the dynamic powder separator, and the coarse material outlet of the dynamic powder separator is connected with the feed inlet of the vertical roller mill;
袋收尘器，动态选粉机的出料口与袋收尘器的入口联通，袋收尘器的出风口与循环风机的进风口联通。For the bag dust collector, the outlet of the dynamic powder separator is connected with the inlet of the bag dust collector, and the air outlet of the bag dust collector is connected with the air inlet of the circulating fan.
本发明创造具有的优点和积极效果是：The advantages and positive effects that the present invention has are:
由于本发明创造采用上述技术方案，将粉磨区域与分选区域分开，粉磨区域无物料循环，大大降低通风量和通风阻力。同时，将传统立式辊磨装置的气力输送变为机械输送，从而解决循环风机电耗高的问题。而且，新物料直接喂入V型选粉机，部分细粉直接被带入动态选粉机中，避免了磨机内过粉磨现象的发生，从而降低粉磨电耗。此外，立式辊磨粉磨后的物料经过两阶段分选，分别由V型选粉机和动态选粉机完成，两阶段分选能大大提高分选效率，减少过粉磨现象，优化物料颗粒组成。Because the invention adopts the above technical scheme, the grinding area is separated from the sorting area, and there is no material circulation in the grinding area, which greatly reduces the ventilation volume and ventilation resistance. At the same time, the pneumatic conveying of the traditional vertical roller mill is changed to mechanical conveying, thus solving the problem of high power consumption of the circulating fan. Moreover, the new material is directly fed into the V-type classifier, and part of the fine powder is directly brought into the dynamic classifier, which avoids the occurrence of over-grinding in the mill, thereby reducing the power consumption of the mill. In addition, the materials after vertical roller mill grinding are separated by two stages, which are completed by V-type separator and dynamic separator respectively. The two-stage separation can greatly improve the separation efficiency, reduce the phenomenon of over-grinding, and optimize the material Particle composition.
综上所述，立式辊磨系统的循环风机风量降低10％～20％，压力可降低20％～30％，电耗可降低40％～50％。To sum up, the air volume of the circulating fan of the vertical roller mill system can be reduced by 10% to 20%, the pressure can be reduced by 20% to 30%, and the power consumption can be reduced by 40% to 50%.
附图说明Description of drawings
图1是本发明创造的结构示意图；Fig. 1 is the structural representation that the present invention creates;
图2是传统的立式辊磨系统的结构示意图。Fig. 2 is a schematic structural view of a traditional vertical roller mill system.
图中：1、配料机构；2、动态选粉机；3、V型选粉机；4、立式辊磨；5、循环风机；6、产品；7、袋收尘器；8、甲提升输送机；9、乙提升输送机。In the figure: 1. Batching mechanism; 2. Dynamic powder separator; 3. V-type powder separator; 4. Vertical roller mill; 5. Circulating fan; 6. Product; 7. Bag dust collector; Conveyor; 9, B lift conveyor.
具体实施方式Detailed ways
为能进一步了解本发明创造的发明创造内容、特点及功效，兹例举以下实施例，并配合附图详细说明如下：In order to further understand the inventive content, features and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
如图1所示，As shown in Figure 1,
一种立式辊磨系统，包括立式辊磨4和配料机构1，还包括有V型选粉机3，配料机构的下游与V型选粉机的入料口联通，立式辊磨的出料口与V型选粉机的入料口通过甲提升输送机8联通，V型选粉机的粗料出料口与立式辊磨的入料口通过乙提升输送机9联通；A vertical roller mill system, including a vertical roller mill 4 and a batching mechanism 1, and also includes a V-shaped powder separator 3, the downstream of the batching mechanism is connected with the feed inlet of the V-shaped powder separator, and the vertical roller mill The discharge port and the feed port of the V-type powder separator are connected through the first lifting conveyor 8, and the coarse material discharge port of the V-type powder separator is connected with the feed port of the vertical roller mill through the second lifting conveyor 9;
循环风机，循环风机的出风口与V型选粉机进风口通过循环风管联通；Circulating fan, the air outlet of the circulating fan is connected with the air inlet of the V-type powder classifier through the circulating air duct;
动态选粉机，动态选粉机2的入料口与V型选粉机的细料出料口联通，动态选粉机的粗料出料口与立式辊磨的入料口联通，具体说来动态选粉机的粗料出口通过溜管与立式辊磨联通。Dynamic powder separator, the feed port of dynamic powder selector 2 is connected with the fine material discharge port of V-shaped powder selector, the coarse material discharge port of dynamic powder selector is connected with the feed port of vertical roller mill, specifically Speaking of which, the coarse material outlet of the dynamic powder classifier is connected with the vertical roller mill through the chute.
袋收尘器，动态选粉机的出料口与袋收尘器7的入口联通，袋收尘器的出风口与循环风机5的进风口联通。For the bag dust collector, the outlet of the dynamic powder separator is connected to the inlet of the bag dust collector 7, and the air outlet of the bag dust collector is connected to the air inlet of the circulating fan 5.
本发明创造的动作原理为：The action principle created by the present invention is:
一种立式辊磨方法，物料先在配料机构1中计量配料，A vertical roller mill method, the material is firstly metered and batched in the batching mechanism 1,
立式辊磨粉磨后的物料经过两阶段分选，分别由V型选粉机和动态选粉机完成。The materials after vertical roller mill grinding are separated by two stages, which are respectively completed by V-type powder separator and dynamic powder separator.
立式辊磨4粉磨后的物料通过甲提升输送机8输送到V型选粉机3中，与配料机构配合的新物料均进入V型选粉机中，第一阶段分选在在V型选粉机中进行，粉磨后的物料经过分散，在风力和重力的作用下进行分选，粗颗粒由乙提升输送机9送入立式辊磨进行再次粉磨，出V型选粉机的含尘气体和细颗粒从底部引入到动态选粉机2中进行第二阶段分选。The ground material of the vertical roller mill 4 is transported to the V-type powder separator 3 through the A lifting conveyor 8, and the new materials matched with the batching mechanism enter into the V-type powder separator. It is carried out in the type powder classifier. The ground materials are dispersed and sorted under the action of wind and gravity. The coarse particles are sent to the vertical roller mill by the second lifting conveyor 9 for re-grinding, and the V-type powder classifier is produced. The dusty gas and fine particles of the machine are introduced from the bottom into the dynamic powder separator 2 for the second stage of separation.
在动态选粉机中物料的分选分为粗选和精选：粗选属于静态分选，粗颗粒自下向上撞击到反击锥失去动能落入粗粉中；精选属于动态分选，靠高速旋转的笼型转子控制成品的细度，使合格产品进入到成品中，动态选粉机分选的粗粉经溜管喂入立式辊磨4再粉磨。这样既降低循环风机5的静压，又可降低循环风机5通风量，从而解决循环风机电耗高的问题。The sorting of materials in the dynamic powder separator is divided into rough selection and fine selection: rough selection belongs to static sorting, coarse particles hit the counterattack cone from bottom to top and lose kinetic energy and fall into the coarse powder; fine selection belongs to dynamic sorting, relying on The high-speed rotating cage rotor controls the fineness of the finished product, so that qualified products enter the finished product, and the coarse powder sorted by the dynamic powder separator is fed into the vertical roller mill 4 through the chute for grinding. This not only reduces the static pressure of the circulating fan 5, but also reduces the ventilation volume of the circulating fan 5, thereby solving the problem of high power consumption of the circulating fan.
动态选粉机经管道连接袋收尘器7，袋收尘器收集动态选粉机分选的细粉合格产品6。The dynamic powder separator is connected to the bag dust collector 7 through pipelines, and the bag dust collector collects the fine powder qualified product 6 sorted by the dynamic powder separator.
本发明创造将粉磨区域与分选区域分开，使得循环风机所产生的风不再经过立式辊磨，经辊磨粉磨后的物料通过机械方式输送到选粉机中完成分选。将传统立式辊磨装置的气力输送变为机械输送，降低通风量与通风阻力，从而解决循环风机电耗高的问题。分选区域由V型选粉机和动态选粉机组成，分两阶段进行分选，大大提高分选效率，减少过粉磨现象，优化物料颗粒组成。The invention separates the grinding area from the sorting area, so that the wind generated by the circulating fan no longer passes through the vertical roller mill, and the material after the roller mill is mechanically transported to the powder classifier to complete the sorting. The pneumatic conveying of the traditional vertical roller mill is changed to mechanical conveying, the ventilation volume and ventilation resistance are reduced, and the problem of high power consumption of the circulating fan is solved. The sorting area is composed of a V-type powder classifier and a dynamic classifier, and the sorting is carried out in two stages, which greatly improves the sorting efficiency, reduces the phenomenon of over-grinding, and optimizes the composition of material particles.
尽管上面结合附图对本发明创造的优选实施例进行了描述，但是本发明创造并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，并不是限制性的，本领域的普通技术人员在本发明创造的启示下，在不脱离本发明创造宗旨和权利要求所保护的范围情况下，还可以做出很多形式，这些均属于本专利的保护范围之内。Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Those skilled in the art Under the enlightenment of the present invention, those of ordinary skill can also make many forms without departing from the purpose of the present invention and the protection scope of the claims, and these all belong to the protection scope of this patent.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203239.9ACN105080698B (en) | 2014-05-14 | 2014-05-14 | Use the grinding process of vertical roller grinder system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203239.9ACN105080698B (en) | 2014-05-14 | 2014-05-14 | Use the grinding process of vertical roller grinder system |
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| CN105080698A CN105080698A (en) | 2015-11-25 |
| CN105080698Btrue CN105080698B (en) | 2018-10-12 |
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| CN201410203239.9AActiveCN105080698B (en) | 2014-05-14 | 2014-05-14 | Use the grinding process of vertical roller grinder system |
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