1200cc refractoy burner fire block 1). Clay, alumina, mullite, corundum quality 2). Refra. ... 9001:2000 the company can produce any kind of refracotry burner block as demand , apply to all kinds of kilns,furnaces ... under load on 0.1MPa165016501400Al2O3 %≥95%≥85%≥60% 1200cc refractoy burner fire block