摘要
In order to study the effect of fused spinel on the properties of phosphoricacid bonded high alumina castables, samples with different contents of fused spinel were prepared.The results show that when the contents of the fused spinel are between 8% and 16% (mass fraction),the castables have good properties. The castables overcome the shortages of the phosphoric acidbonded high alumina castables with bauxite cement as a hardening promoter. The experimentsdemonstrate that most of the service properties of the castables with fused spinel are better thanthose of the normal phosphoric acid bonded castables which use bauxite cement as a hardeningpromoter. The examination of the materials indicates that free MgO inclusions in the spinel powdercan promote the hardening of the castables.
In order to study the effect of fused spinel on the properties of phosphoricacid bonded high alumina castables, samples with different contents of fused spinel were prepared.The results show that when the contents of the fused spinel are between 8% and 16% (mass fraction),the castables have good properties. The castables overcome the shortages of the phosphoric acidbonded high alumina castables with bauxite cement as a hardening promoter. The experimentsdemonstrate that most of the service properties of the castables with fused spinel are better thanthose of the normal phosphoric acid bonded castables which use bauxite cement as a hardeningpromoter. The examination of the materials indicates that free MgO inclusions in the spinel powdercan promote the hardening of the castables.
