Anti-oxidative refractory brick and preparation method thereof

Abstract

The invention discloses an anti-oxidative refractory brick and a preparation method thereof. The anti-oxidative refractory brick is prepared from raw materials in parts by weight as follows: 12-19 parts of quartzite, 10-15 parts of topaz, 11-17 parts of coal water slurry slag, 5-10 parts of silicon oxynitride, 18-27 parts of dolomite, 7-13 parts of zirconium diboride, 8-16 parts of forsterite, 9-18 parts of dolomite, 22-29 parts of marine dredged sludge, 16-24 parts of anthracite, 14-22 parts of granite stones, 15-20 parts of kaolin, 10-15 parts of porous powder quartz, 5-10 parts of pyrophyllite and 13-19 parts of industrial aluminum oxide. The effects of promoting sintering and improving the oxidation resistance and the corrosion resistance of the refractory brick are realized by introducing silicon oxynitride and zirconium diboride; the added raw materials such as porous powder quartz, coal water slurry slag and the like can improve the heat stability, the corrosion resistance and the wear resistance of the refractory brick. The refractory brick has excellent properties of excellent oxidation resistance, thermal shock resistance, corrosion resistance, wear resistance, high high-temperature strength, low expansion coefficients and the like.

Description

technical field [0001] The invention relates to an anti-oxidation refractory brick and a preparation method thereof, belonging to the field of refractory materials. Background technique [0002] Refractory brick is a kind of building material brick, and its property is "refractory" like its name. It is a refractory material fired from refractory clay or other refractory raw materials, which can withstand various physical and chemical changes and mechanical actions at high temperatures. Refractory bricks are not common in our lives, but they appear in some buildings that are closely related to our lives, such as housing construction, kiln construction, thermal equipment, etc. [0003] The invention patent with the patent number: 201510494613.X discloses a foamed thermal insulation refractory brick produced by using coal gangue and its preparation method. The raw material composition is 40-60 parts by weight of coal gangue, bauxite tailings 30-50 parts, 2-15 parts of fly ash...

AI Technical Summary

Problems solved by technology

The invention provides a foamed thermal insulation refractory brick produced using coal gangue as the main raw material and its preparation method, although it solves the problems of low refractoriness, poor molding, low strength and high cost of lightweight refractory thermal insulation bricks in the