High-temperature heat capacity and metallurgical performance of Ca3TiFe2O8
The quality of the sintered iron ores is dominated by their bonding phases properties.The cal-cium ferrite system containing TiO2 was investigated to promote the efficient utilization of vanadium and titanium magnetite resources in the field of sintering.In this paper,Ca3TiFe2O8(CFT)was found in titanium-bearing sintering ores,and CTF was successfully prepared by solid-state reaction.The high-temperature heat capacity of CTF was determined by the Drop method,and the corresponding fitting function was obtained.In addition,the metallurgical properties(including melting properties and reduc-tion behavior)of CTF were determined.The results showed that the softening,melting and flowing tem-peratures of CTF were 1 418 ℃,1 461 ℃ and 1 480 ℃,respectively.The non-isothermal reduction res-ults showed that CTF was reduced to Fe,CaO and CaO·TiO2 in one step,and the reduction process of CTF was completed when the temperature reached 1 150 ℃.
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