A kind of manufacturing method of wear-resistant ceramic drum liner

Abstract

The invention discloses a wear-resistant ceramic roller lining plate manufacturing method. The method includes: proportionally subjecting 30-40wt% of aluminum trioxide, 10-20wt% of kaolin, 10-25wt% of alumina, 20-35wt% of quartz powder, 5-10wt% of feldspar powder and 1-3wt% of zirconium oxide to ball milling and mixing to obtain a base material; adding carboxymethyl cellulose being 1-3% of the weight of the base material and Guangdong black clay being 2-5% of the weight of the base material into the base material, and performing ball milling and well stirring to obtain chamotte; spraying a reinforcement material accounting for 1-3% of the weight of the base material into the chamotte under the air pressure of 0.3-0.5MPa, and performing ball milling and mixing to obtain powder; extruding the powder to obtain a semi-finished lining plate, drying, firing, cooling and discharging. By the wear-resistant ceramic roller lining plate manufacturing method, elasticity modulus and fracture toughness of base material grains are improved, and accordingly high pressure resistance and bending strength, high acid-alkali corrosion resistance, high fracture toughness and high impact resistance of lining plates can be achieved.

Description

technical field [0001] The invention relates to conveyor components, in particular to a method for manufacturing a wear-resistant ceramic liner for a conveyor transmission and reversing roller. Background technique [0002] As we all know, the conveyor is a kind of large conveying capacity, high transmission efficiency, low transportation cost, no dust, low noise, not limited by topography, climate and environment, etc., and can realize long-distance and long-term continuous transportation. transmission device. In the conveyor, the transfer roller and the redirection roller are a pair of important key parts. Their service life and working effect are directly related to the transmission efficiency and working cost of the conveyor. The transfer roller and the redirection roller of the traditional conveyor Most of them use cast rubber or viscose on the surface of the processed steel pipe as the wear-resistant layer, but the cast rubber or viscose transfer and redirection rolle...

AI Technical Summary

Problems solved by technology

In the conveyor, the transfer roller and the redirection roller are a pair of important key parts. Their service life and working effect are directly related to the transmission efficiency and working cost of the conveyor. The transfer roller and the redirection roller of the traditional conveyor Most of them use cast rubber or viscose on the surface of the processed steel pipe as the wear-resistant layer, but the cast rubber or viscose transfer and redirection rollers have low wear resistance in actual use, and the service life of the roller is short. Frequent replacement is required, which increases maintenance time, increases the operating cost of the conveyor, and reduces the transmission efficiency of the conveyor

At present, the conveying and reversing rollers of conveyors are made of integral ceramics. Although the wear resistance is improved and the service life is prolonged, the overall ceramic rollers have a large weight, large transmission resistance, and high power consumption. Second, the processing and installation are relatively large. trouble

Nowadays, most people use high-alumina ceramic lining boards on the surface of the steel roller body. Although the roller has high mechanical strength, acid and alkali corrosion resistance, high wear resistance, and reduced weight, the first is the connecting glue between the lining board and the surface of the roller body. The layer is easy to fall off, and the liner is easy to loosen. Second, the contact surface between the liner and the belt is not high in slip resistance, and the belt is easy to slip, which may even cause safety accidents such as belt derailment. The content is as high as 80%, the sintering temperature of the lining board should be above 1650°C, the firing time should be 30-40 hours, and the sintering shrinkage rate is as high as 20%, the lining board is brittle, the impact resistance is not good, and the lining board is squeezed or impacted It is easy to break, causing the liner to be scrapped, affecting the conveying efficiency, and increasing energy consumption and cost