Method for prolonging service time of cement grinding mill

Abstract

The invention discloses a method for prolonging the service time of a cement grinding mill. The method comprises the following steps: increasing the pressure of a small air compressor, wherein the pressure of the small air compressor is greater than or equal to 0.65Mpa; increasing the stroke of a valve cone, wherein the stroke of the valve cone is adjusted to 25mm; increasing the volume of an air trap set, wherein the air storage volume of a large air trap set is greater than or equal to 12m<3>; and extending the open time interval of an exhaust valve, wherein the internal pressure of a pump when the exhaust valve is switched on is less than or equal to 0.04Mpa. The method for prolonging the service time of the cement grinding mill, disclosed by the invention, can be used for overcoming the defects of unreasonable structure, complex operation process and large manual labor intensity and the like in the prior art so as to achieve the advantages of reasonable structure, simple operation process and small manual labor intensity.

Description

technical field [0001] The invention relates to the technical field of cement processing, in particular to a method for prolonging the service time of cement mills. Background technique [0002] The No. 2 cement production line of Guangxi Yufeng Cement Co., Ltd. is a 3200t / d production line imported from Denmark's Smith Company in the 1980s. The cement grinding system is equipped with two Ф4.2×11m Compidan mills, and the cement is conveyed by pneumatic conveying. In 2012 Due to the constraints of various factors, the average service life of the cement mill single-chamber pump exhaust valve on No. 2 production line is 10 days. The part is the single-chamber pump system, and it takes a long time (about 2 hours) to replace the exhaust valve of the single-chamber pump. The fault of the single-chamber pump system causes too many process shutdowns and the shutdown time is too long, which seriously restricts the operation rate of the mill and the grinding mill. Machine hour output...

AI Technical Summary

Problems solved by technology

[0007] In the process of realizing the present invention, the inventor found that there are at least defects in the prior art such as unreasonable structure, complicated operation process and large amount of manual labor.

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