Fire clay Brick for Sale from FireClay Suppliers - …
The mineral composition of clay brick is kaolinite and 6% ~ 7% impurities, such as potassium, sodium, calcium, titanium, iron oxide. Fireclay brick is made from clinker clay by mixing, forming, drying, sintering and matching. In the firing process of the fireclay brick, kaolinite decomposes generating mullite crystal.