Andalusite is a kind of advanced refractory raw material,at room temperature heated to about 1350℃,start into acicular mullite crystal, forming good mullite network structure, the volume expansion of about 4%.
Refractoriness in more than 1800℃, and resistance to thermal shock,mechanical strength is big,high anti-thermal shocking, high slag resistance is strong, refractoriness under load is high, high chemical stability and strong resistance to chemical corrosion.
Introduce the andalusite to high alumina brick, the production of andalusite high alumina brick than ordinary high alumina brick has the more and better performance.
Better thermal shock stability
Better high anti-thermal shocking
Better slag corrosion resistance
Better chemical corrosion resistance performance
Therefore, andalusite high alumina brick are more versatile , use effect is better.
