PRODUCT DESCRIPTION

Introduction

Andalusite based brick is a premium high-alumina refractory brick taking natural andalusite ore as the main raw material, mixed with mullite powder and alumina fines, then pressed and high-temperature fired.

When heated above 1300℃, andalusite irreversibly transforms into interlocking acicular mullite with slight volume expansion, forming a stable network structure. It is high-performance alumina-silica refractory, widely used for industrial furnaces with frequent temperature fluctuation and strict low creep demand.

Features

Ultra-low high-temperature creep & excellent volume stability: Produces uniform micro expansion during mullitization, offsets lining shrinkage, tightens brick joints, and avoids structural deformation or peeling under long-term high-temperature load.

Superior thermal shock resistance: Unique interlocking mullite crystal structure effectively buffers thermal stress, resisting cracking and spalling under frequent cold and hot alternation.

High strength & abrasion resistance: Dense and uniform brick structure, strong resistance to high-speed airflow scouring and dust abrasion.

Stable chemical corrosion resistance: Low impurity content, good resistance to acidic and neutral slag erosion, maintaining stable service performance in complex furnace atmospheres.

Application

Middle & lower regenerator lining, combustion chamber and checker bricks of blast furnace hot blast stoves; ladle, torpedo ladle and reheating furnace lining.

Flue walls and partition walls of carbon baking furnaces and coke ovens.

Lining for glass furnace regenerators, ceramic tunnel kilns and rotary kilns.

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