Sintering Experiments of High-Cr Vanadium and Titanium Magnetite

Considering lack of related technological documentation and detailed researches on ore matching optimization,sintering pot tests and mineralography analysis on the basis of basic sintering characteristics were done in this experiment.The results showed that basic sintering characteristics of high-Cr V-Ti magnetite are relatively poor,vertical sintering speed and tumbling index decreased,the yield and productivity first increased and then decreased with the increase of the addition ratio of high-Cr V-Ti magnetite in sinter feeds.Furthermore the analysis of the microstructure showed that the mineralography structure of the sinter mainly included magnetite,hematite,perovskite,calcium ferrite,dicalcium silicate and glass.With the increase of the proportioning of high-Cr V-Ti magnetite,the content of calcium ferrite and dicalcium silicate decreased,perovskite and glass increased and the liquid phase tended to be insufficient.Thus,the proportioning of high-Cr V-Ti magnetite should be controlled between 10% and 20% for the practical sintering production.