Effect of Sintering Basic Characteristics on Reduction Degradation Index for Cr-Bearing Vanadium and Titanium Magnetite

The content of binding phase in Cr-bearing vanadium and titanium magnetite is insufficient,which makes the sintering strength and low temperature reduction degradation index(RDI) bad. The sintering basic characteristics,i. e.,crystal intensity,self-intensity of adhere phase,fluidity of liquid phase,assimilation temperature,were studied in four kinds of Cr-bearing vanadium and titanium magnetites,which were compared with the single burning test results of four kinds of iron ore concentrate,to explore the effect of the sintering basic characteristics on RDI+ 3. 15.The results showed that the RDI+ 3. 15 of sinter decreases with increasing the assimilation temperature,and increases with increasing the strength of binding phase,but the fluidity of liquid phase and crystal intensity have little influence on it.