Built-out powder concentrator type vertical mill combined grinding system adopting non-metal grinding medium

Abstract

The invention relates to a built-out powder concentrator type vertical mill combined grinding system adopting a non-metal grinding medium. The built-out powder concentrator type vertical mill combined grinding system adopting the non-metal grinding medium is characterized by comprising a material distribution bin, a weighing scale, a feeding lifting machine, a vertical mill, a V-shaped powder concentrator feeding lifting machine, a V-shaped powder concentrator, a buffering bin, an efficient powder concentrator, a system dust collector, a system draught fan, a chimney, a first finished-product conveying chute, a ball mill, a mill tail lifting machine, a second finished-product conveying chute, a mill tail dust collector and a mill tail dust collection draught fan, wherein the material distribution bin, the weighing scale, the feeding lifting machine, the vertical mill, the V-shaped powder concentrator feeding lifting machine, the V-shaped powder concentrator, the buffering bin, the efficient powder concentrator, the system dust collector, the system draught fan, the chimney, the first finished-product conveying chute, the ball mill, the mill tail lifting machine, the second finished-product conveying chute, the mill tail dust collector and the mill tail dust collection draught fan are sequentially connected. The built-out powder concentrator type vertical mill combined grinding system adopting the non-metal grinding medium can stabilize operation of the vertical mill, adjust the cement grain size grading, relieve the ball coating phenomenon in the mill, improve the grinding efficiency in the mill, lower the noise of the ball mill in the operation process, reduce the pollution to finished products, reduce the unit power consumption and improve the performance of finished cement.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to an external vertical mill combined grinding system using a non-metallic grinding medium. Background technique [0002] The cement industry is a large energy-consuming industry. The unit power consumption of cement is about 80-100kWh / t, of which the power consumption of cement clinker grinding accounts for a large part. Therefore, reducing the power consumption of cement clinker grinding is environmentally friendly and clean production. important content. [0003] With the rapid development of cement industry equipment technology, traditional low-efficiency ball mills are gradually replaced by new grinding equipment such as vertical roller mills and roller presses, and are developing towards the direction of large-scale grinding equipment. At the same time, great changes have also taken place in the cement grinding process: the roller mill final grinding system and the ...

AI Technical Summary

Problems solved by technology

In actual operation, the pre-grinding system of the roller press still has the following problems: the particle size distribution of the finished cement produced by the final grinding of the roller press is narrow, the uniformity coefficient is high, and the water demand for standard consistency is higher than that of the ordinary circulation ball mill system, which cannot The final grinding product of the roller press is used directly, but it needs to be introduced into the ball mill, which partially reduces the grinding capacity of the ball mill

[0006] The ball mill system that forms a combined grinding system with the pre-grinding equipment, when the ambient temperature is high, the clinker temperature is high, and the fineness of the finished product is fine, the ball mill produced in the form of open flow is prone to "balls" phenomenon, thus Resulting in lower grinding efficiency, lower output, higher power consumption

In addition, the ball mill can produce strong vibration and noise when crushing materials, and the noise is as high as 100-115dB(A), which is very harmful to the operators and the surrounding environment

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