REFRACTORY RAMMED MASS Russian patent published in 1995 - IPC

FIELD: refractory materials. SUBSTANCE: rammed mass has, wt.-% grained corundum 57-59; dispersed mixture of corundum and quartzite at their ratio (9.2-0.8): (8.8-1.2) 37-38; ortho-phosphoric acid 2-2.5, and binder as suspension of amorphized aluminosilicates and alumosol at the ratio (0.8-1.2): (1.2-0.8) 2-2.5, and binder has 15-20% of aluminium hydroxychloride. Properties: strength limit at mass compression after thermal working at 120 and 1500 C is 38-42 and 107-128 MPa, respectively, thermal stability is 1300 C; air above 55. EFFECT: enhanced quality of mass. 1 tbl