Cement final grinding system based on roller press

Abstract

The invention discloses a cement final grinding system based on a roller press. The cement final grinding system comprises the roller press, a material stabilizing bin, a V-shaped powder concentrator, an iron removal device, an elevator, a multi-rotor dynamic powder concentrator, a cyclone dust collector, a fan, a dust collector and a ball mill. A feed port of the elevator communicates with a belt conveying device from a cement distribution station, and a discharge port of the elevator is connected with a feed port of the V-shaped powder concentrator through the iron removal device. According to the cement final grinding system based on the roller press, by means of the roller press final grinding system taking the roller press and the multi-rotor dynamic powder concentrator as core equipment, reasonable finished product grain composition is guaranteed, then the quality of cement is guaranteed, meanwhile, through reasonable design of the technological process, the efficiency of the roller press is exerted to the maximum extent, and the yield is improved; and the material proportion of circulating grinding in the system is reduced, then energy consumption is reduced, part of equipment in an original ball mill grinding system is utilized, and the cost is controlled on the basis of increasing the yield and reducing consumption.

Description

technical field [0001] The invention relates to the field of cement production, in particular to a cement final grinding system based on a roller press. Background technique [0002] In the cement industry, roller presses are widely used for crushing raw materials and cement and other materials. When roller presses are used for cement powder, the current mainstream practical way is to use a combined grinding system with a ball mill. The sub-system can ensure that the final cement The product meets the quality requirements. The working process of this system is usually that the new material is crushed by the roller press, and then fed to the V-type powder separator through the elevator and other conveying devices for primary selection and drying, and the coarse material is returned to the stabilizer of the roller press again. Then enter the roller press for crushing again. The fine material is brought into the cyclone dust collector by the gas and collected as a semi-finished...

AI Technical Summary

Problems solved by technology

[0002] In the cement industry, roller presses are widely used for crushing raw materials and cement and other materials. When roller presses are used for cement powder, the current mainstream practical way is to use a combined grinding system with a ball mill. The sub-system can ensure that the final cement The product meets the quality requirements. The working process of this system is usually that the new material is crushed by the roller press, and then fed to the V-type powder separator through the elevator and other conveying devices for primary selection and drying, and the coarse material is returned to the stabilizer of the roller press again. Then enter the roller press for crushing again. The fine material is brought into the cyclone dust collector by the gas and collected as a semi-finished product and fed to the ball mill for grinding again. The material exiting the ball mill is sorted by the dynamic powder separator, and the qualified products are collected by the dust collector. , the coarse powder continues to be returned to the ball mill for grinding, which not only produces cement products that meet the quality requirements, but the ball mill repeatedly grinds the materials in the above process, which cannot fully release the production capacity and is inefficient. In addition, there are both roller presses and ball mills in the system , the system energy consumption is high;

[0003] If only the roller press is used in the system without the ball mill, the process flow can be significantly simplified, the system efficiency can be improved, and the energy consumption of the system can be reduced. High degree of uniformity will lead to large water consumption and short setting time of the final cement product, which not only affects the durability of cement, but also affects the use of cement. On the other hand, the existing roller press plus ball mill grinding system will be directly replaced. It is a roller press final grinding system. Although it can significantly increase production and reduce consumption, it will also face greater cost pressure. Although the original ball mill system can be used normally, it will also face abandonment

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