- 02
- Mar
Basic introduction of refractory clay bricks
Асноўнае ўвядзенне refractory clay bricks
Clay bricks refer to clay products with Al2O3 content of 30%-40% aluminum silicate materials. Clay bricks are made of 50% soft clay and 50% hard clay clinker, which are batched according to certain particle size requirements. After molding and drying, they are fired at a high temperature of 1300~1400℃. The mineral composition of clay bricks is mainly kaolinite (Al2O3·2SiO2·2H2O) and 6%~7% impurities (oxides of potassium, sodium, calcium, titanium, and iron). The firing process of clay bricks is mainly the process of continuous dehydration and decomposition of kaolin to form mullite (3Al2O3·2SiO2) crystals. The SiO2 and Al2O3 in the clay brick form eutectic low-melting silicate with impurities during the firing process, which surrounds the mullite crystals.
Гліняная цэгла – гэта слабакіслыя тугаплаўкія вырабы, здольныя супрацьстаяць размыванню кіслых дзындраў і кіслага газу, а таксама маюць некалькі слабейшую ўстойлівасць да шчолачных рэчываў. Гліняны цэгла валодае добрымі цеплавымі ўласцівасцямі і ўстойлівы да хуткага холаду і хуткага награвання.