Abstract:

The effect of SM high-efficiency water reduction agent on indexes of flow value and mechanical property of refractory castable and effect of addition of zirconite powder on residual strength after thermal shock of refractory castable are studied. The results show that in the test range, with the increase of SM addition, flow value is increased, bulk density is increased, apparent porosity is reduced, the crushing strength and modulus of rupture are raised；with increase of zircon addition, the residual modulus of rupture after 15 thermal shocks is first increased and then reduced.