Refractory brick of aluminium-chromium silicon carbide

Abstract

This invention is a alumina-chrome carborundum brick, and the composition comprises bauxite chamotte 55-75%, corundum 0-15%, chromium hemitrioxide 1-10%, chrome corundum 0-20%, carbon silicon 5-20% and clay 2-10%, and the broke pulp 1-5% as adhesive agent; the ratio of particles and powder of bauxite chamotte, corundum and carbon silicon is 3-4:1-2; the finished product of the refractory brick comprises Al2O3 60-80%, Ci2031-10%, SiC 5-15%. This refractory brick has good performance of oxidation resistance, strong iron erosion resistance, and the cost is proper and is suitable for the iron water pot, tin fish pot and iron stove.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to an aluminum chromium silicon carbide refractory brick. technical background [0002] At present, Al 2 o 3 -SiC-C does not burn bricks. al 2 o 3 -SiC-C non-fired bricks have the following main disadvantages: Al 2 o 3 -SiC-C non-fired bricks have poor oxidation resistance, and are prone to oxidation failure during use, resulting in rapid erosion of slag lines and scoured parts, severe sticky slag, difficult maintenance, and low life of medium and low-grade bricks, while high-grade Al required for life ≥ 1000 times 2 o 3 -SiC-C unfired bricks are expensive and costly. CN1401612 (application number 01126576) discloses a kind of aluminum-carbon brick mixed-iron furnace lining for mixed-iron vehicles, which is used in the working layer of some mixed-iron vehicles. The disadvantage of aluminum-carbon bricks is that they have poor corrosion resistance t...

AI Technical Summary

Problems solved by technology

al 2 o 3 -SiC-C non-fired bricks have the following main disadvantages: Al 2 o 3 -SiC-C non-fired bricks have poor oxidation resistance, and are prone to oxidation failure during use, resulting in rapid erosion of slag lines and scoured parts, severe sticky slag, difficult maintenance, and low life of medium and low-grade bricks, while high-grade Al required for life ≥ 1000 times 2 o 3 -SiC-C unfired bricks are expensive and costly

CN1401612 (application number 01126576) discloses a kind of aluminum-carbon brick mixed-iron furnace lining for mixed-iron vehicles, which is used in the working layer of some mixed-iron vehicles. The disadvantage of aluminum-carbon bricks is that they have poor corrosion resistance to molten iron and slag. The life of the slag line area is low and the operating cost is high