Underground anti-static ceramic roller and preparation method thereof

Abstract

The invention relates to an underground anti-static ceramic roller and a preparation method thereof and belongs to the technical field of large-scale belt conveying mechanical accessories. The preparation method comprises the following steps of: preparing china stone, kaolin, knar clay, soda feldspar, smonite, potassium feldspar, silicon carbide powder and other raw materials in a certain weight ratio; preparing slurry; homogenizing the slurry; filtering to obtain mud; smelting the mud and decomposing; extruding to form blank; turning green bodies; firing at high temperature; and accurately grinding to obtain the roller. Silicon carbide which has the electrical property of semiconductor, high-temperature oxidation resistance, heat conduction and melting resistance is doped with a certain amount of impurities which have the characteristic of heat conduction, so that the ceramic roller has the characteristics of heat conduction and anti-static performance, light weight, high hardness, wear resistance, acid and alkaline resistance, water resistance and the like. The problem that the conventional ceramic roller which is made of common ceramic materials without heat conduction cannot release charges timely, so that static sparks are generated to cause gas explosion, and the life safety of coal miners and the production operation safety are threatened can be solved. The underground anti-static ceramic roller can be used safely and reliably, and is long in service life.

Description

technical field [0001] The invention relates to an underground antistatic ceramic idler and a preparation method thereof, belonging to the technical field of large-scale belt transport machinery accessories. Background technique [0002] The friction between the steel rollers of the large coal mine underground belt conveyor and the high-speed operation of the belt conveyor will generate static electricity, and the accumulation of static charges will easily generate sparks and cause gas explosions. At present, ceramic rollers are widely used as a substitute for steel rollers because of their good wear resistance and insulation properties. However, the existing ceramic rollers are generally made of ordinary ceramic materials and do not have conductivity. As the friction time between the ceramic rollers and the belt conveyor increases at high speed, the charges accumulated on the surface of the ceramic rollers cannot be released in time. Static sparks will be generated to caus...

AI Technical Summary

Problems solved by technology

The underground anti-static ceramic idler and its preparation method solve the problem that the existing ceramic idler is made of ceramic material that does not have conductive properties, and cannot release charges in time, resulting in static sparks that cause gas explosions, endangering the life safety of coal mine workers and the safety of production operations.