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采用TSJ-3型微型烧结机研究了钒钛磁铁矿的液相基础性能,然后运用Fact Sage6.3软件中Equilib模型研究了温度、碱度和焙烧气氛对钒钛磁铁矿液相量(实际液相生成量与理论液相生成量的比值)和主要固相物质变化的影响。结果表明:烧结温度对液相量的影响非常大,随着烧结温度升高,液相量逐渐加大,但是料层高度不同其液相量也略有不同;碱度与液相量存在单调关系,即随着碱度升高,液相量增大;在氧化气氛逐渐增强的过程中,液相量增加但增速缓慢,过多地通入氧气,液相量不增反降。重点对比了不同碱度条件下软件模拟与实际烧结的结果,烧结试验与理论计算结果基本一致。
The basic properties of liquid phase of vanadium-titanium magnetite were studied by TSJ-3 mini-sintering machine. Then, the effects of temperature, alkalinity and calcination atmosphere on the liquid phase of vanadium-titanium magnetite were investigated by Equilib model in Fact Sage 6.3 software The ratio of the actual amount of liquid phase produced to the theoretical amount of liquid phase produced) and the effect of changes in the main solid phase material. The results show that the sintering temperature has a great influence on the amount of liquid phase. With the increase of sintering temperature, the amount of liquid phase gradually increases, but the amount of liquid phase varies slightly with the height of the material layer. The alkalinity and the amount of liquid phase are monotonous In other words, as the alkalinity increases, the amount of liquid phase increases. In the process of gradually increasing the oxidizing atmosphere, the amount of liquid phase increases but the rate of increase is slow. When too much oxygen is introduced, the amount of liquid phase does not increase or decrease. The results of software simulation and actual sintering under different alkalinity conditions were compared with each other. The results of sintering test and theoretical calculation are basically the same.