全部分类

Mullite lightweight insulation brick raw materials and product introduction

Release time：2023-11-15

What is mullite lightweight insulation brick?

Shaped lightweight thermal insulation refractory brick is a shaped block thermal insulation refractory product with porous structure and thermal insulation performance, of which the production and application of brick-shaped products are the most extensive, so it is also called lightweight thermal insulation refractory brick.

What is the main raw material of mullite insulation brick?

The main raw materials of mullite thermal insulation bricks are as follows: clay, calcined alumina, calcined mullite powder, tabular corundum, kyanite and sillimanite. The foaming agent used was sodium dodecyl sulfonate, the burnout used was sawdust and polypropylene balls, and the binder was polyvinyl alcohol (PVA).

Shaped mullite products mainly refers to mullite lightweight thermal insulation brick, is a kind of Al2O3 content of 50% ~ 80%, with mullite (3Al2O3 2 SiO2) as the main crystal phase and the combination of new insulation materials. Because mullite lightweight insulation brick has the advantages of high temperature strength, good high temperature stability, small thermal expansion coefficient, and good thermal shock resistance, it is widely used in the lining of the kiln working face in direct contact with the flame.

keyword： Mullite lightweight insulation brick raw materials and product introduction