高温碳热还原条件下钛铁矿物相变化的实验研究  

Experimental Study on Phase Transformation of Ilmenite Ore during High Temperature Carbon Thermal Reduction

作　　者：顾静[1,2] 夏德宏 齐照东[2] 敖雯青 

机构地区：[1]北京科技大学机械学院,北京100083 [2]中国钢研科技集团有限公司特种陶瓷与耐火材料北京市重点实验室,北京100081

出　　处：《稀有金属与硬质合金》2017年第5期17-21,26,共6页Rare Metals and Cemented Carbides

摘　　要：采用煤粉为还原剂,在1 573~1 873K的温度条件下进行TiO2含量为61.85%的钛铁矿的碳热还原实验,并采用XRD、SEM等技术手段分析了还原产物的物相变化和微观形貌。结果表明,当C与钛铁矿中全部氧化物的碳氧比例≥1∶1时,钛铁矿的还原产物全部为TiC和金属Fe。即采用碳热还原法可以从钛铁矿中获得TiC/Fe复合材料,为钛铁矿中Fe和Ti的资源综合利用提供参考。Using coal powder as reducing agent, carbon thermal reduction of ilmenite with 61.85 % TiO2 was performed at 1 573-1 873 K,and the phase transformation and microstructure of reaction products were studied by XRD and SEM. The results show that when carbon-oxygen ratio of carbon to all oxides in ilmenite is higher than 1 ： 1,all the reduction products are TiC and Fe. So the TiC/Fe composites can be obtained from ilmenite by carbon thermal reduction, providing reference for the comprehensive utilization of Fe and Ti in ilmenite ore.

关 键 词：钛铁矿 碳热还原 TiC 物相分析 配碳量 还原温度 

分 类 号：TF041[冶金工程—冶金物理化学]