Introduction of Clay Thermal Insulation Lightweight Refractory Brick

Clay-based heat-insulating lightweight refractory bricks are heat-insulating refractory bricks with 30% to 48% AL2O3 content made of refractory clay as the main raw material. The production process adopts the burn-out adding character method and the foam method. Using refractory clay, floating beads, and refractory clay clinker as raw materials, adding binders and sawdust, batching, mixing, molding, drying, and firing to obtain a product with a bulk density of 0.3～1.5g/cm3 . The output of clay insulating bricks accounts for more than half of the total output of insulating refractory bricks.

According to the Chinese standard (GB 3994-1983), clay insulation bricks are divided into NG-1.5, NG-1.3a, NG-1.3b, NG-1.0, NG-0.9, NG-0.8, NG-0.7, NG according to their bulk density. —0.6, NG—0.5, NG—0.4 10 grades.