Open circuit final grinding technology

Abstract

Open circuit final grinding technology belongs to grinding technology; materials are fed into a vertical mill; under the action of a material distribution device, the materials move to the edge of a millstone, and are grinded by a high-pressure roller at a powder grinding zone; the pulverized materials are blown at the edge of the millstone by high-speed air flow generated by a high-pressure blower fan; crude powder with a large particle size falls back to the millstone for regrinding; most powder is taken to a powder separator by the air flow for separation by particle sizes; the separated crude powder falls back to the millstone for regrinding through a material-falling pipe; the separated fine powder enters into a subsequent large-scale cloth bag deduster along with the air flow for collection so as to obtain the finished product; the air flow for powder separation is filtered and purified by the cloth bag deduster and is discharged into the atmosphere by the high-pressure blower fan. The rolling mill is organically combined with a dynamic grader; material bed-rolling grinding technology is adopted; a traditional mode in which the millstone rotates and the grinding roller is driven for the vertical mill is changed into a mode in which the millstone is fixed and the grinding roller rolls, and thus the advantages of high working efficiency, good fine grinding performance, less abrasion, low energy consumption, saved investment, and simple maintenance are reached.

Description

technical field [0001] The invention relates to a grinding process, in particular to an open circuit final grinding process. Background technique [0002] Since my country's reform and opening up, the national economy has grown rapidly, "scientific and technological innovation, independent innovation" has become the mainstream of today's industrial development, and my country's industry is gradually developing in the direction of intensive, energy-saving, emission-reducing, and low-carbon. my country is a big cement producing country and also a big cement consuming country. It is of great significance for our country to save energy and reduce emissions by vigorously reducing the excessive energy consumption in the process of cement grinding. According to relevant statistics, my country's cement plants need to grind more than 30 kinds of materials to produce 1 ton of cement, and the power consumption of grinding accounts for about 65% to 70% of the total power consumption of ...

AI Technical Summary

Problems solved by technology

However, the particle shape of the material discharged from the roller press is not good, which affects the operability of the concrete. Therefore, all the materials discharged from the roller press must be put into the mill for grinding. The re-grinding of the material that has reached the final product requirements not only affects the output of the mill. , it is also easy to cause over-grinding, which affects the strength of clinker

For more than 100 years, people have done a lot of research on the production process and mechanical dynamics of mills. Although some progress and achievements have been made, there are still technical problems that have not been overcome in practical applications.

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