Refractory aggregate for refractory brick manufactured through recycling investment casting old shell powder and processing method thereof

Abstract

The invention relates to a refractory aggregate for a refractory brick manufactured through recycling investment casting old shell powder and a processing method thereof. The invention adopts refractory materials, which are the old shell powder manufactured through recycling old shells; the old shell powder is powder which is air dried and high-temperature roasted, and has small linear deformation and completely combusted organic matters; the old shell powder is processed to be the refractory aggregate for manufacturing the refractory brick; and the main components of the refractory aggregate for manufacturing the refractory brick are zirconium oxide, aluminum oxide and silicon oxide. The processing method comprises the following steps of: adopting the investment casting old shells as raw materials; sorting, classifying, dehydrating, deironing, first crushing, and processing to form powder in a manufacturing and processing process; screening, and secondary deironing to obtain oversize products and screen underflows; and classifying the oversize products and the screen underflows to obtain the qualified refractory aggregate for manufacturing the refractory brick. The processing method has the advantages of novel conception, simple and convenient method, and convenience in implementation.

Description

technical field [0001] The invention relates to a material for refractory bricks through recycling of resources, in particular refractory aggregates for refractory bricks produced by reusing investment casting old mold shell powder and a processing method thereof. It is to make refractory aggregates for making refractory bricks by making recycled investment casting old shells into powder. technical background [0002] Usually, refractory bricks are made of refractory materials and sintered at high temperature or pressed under high pressure, or synthesized by chemical processes and methods. However, as far as the applicant is aware, there is no refractory brick that has been manufactured using powder from recycled investment casting old shells. [0003] For example, "Composition for Refractory Bricks, Refractory Bricks, and Manufacturing Method for Refractory Bricks" disclosed in Chinese patent document CN102712538A (Application No.: 201180007008.5) The composition for refra...

AI Technical Summary

Problems solved by technology

At present, for the disposal of these old shells, most enterprises adopt the method of discarding or landfilling, which has the consequences of occupying land and polluting the environment, and at the same time increases the waste disposal fees of enterprises and the environmental protection cost of society.