添加剂对高铝中钛型高炉渣黏度及熔化性温度的影响

Effect of Additives on Viscosity and Smelting Temperature of Blast Furnace Slag With Medium Titanium and High Alumina Content

采用RTW熔体物性测定仪研究了高铝中钛型高炉渣的黏度和熔化性温度,得到了不同添加剂成分对黏度和熔化性温度的影响规律。研究结果表明：在高铝中钛高炉渣中分别加入一定比例的CaF2、MnO、MgO、Li2O,均有利于炉渣黏度和熔化性温度的降低。综合考虑炉渣的流动性和添加剂的成本,比较适宜的添加剂为CaF2和MnO;各添加剂适宜的添加范围分别为：CaF2质量分数为0.5%~1.5%,MnO质量分数为2%~5%,MgO质量分数为1%~3%,Li2O质量分数为1%~2%。

The viscosity and smelting temperature of blast furnace slag with medium titanium and high alumina content were studied using RTW type of melt physical determinator and the influence pattern of different additive compositions on the viscosity and smelting temperature were obtained. The results show that a certain percentage of CaF2, MnO, MgO, Li2O added to the high aluminum and medium-titanium slag are conducive to the reduction of slag viscosity and smelting temperature. Considering the slag fluidity and additive costs, CaF2 and MnO are more suitable additives. The suitable percentage of each additive： the mass fraction of CaF2 is 0.5 %- 1.5 %, the mass fraction of MnO is 2 %- 5 %, the mass fraction of MgO is 1%--3 % and the mass fraction of Li2O is 1%- 2 %.