摘要
对攀枝花钢铁研究院电炉熔炼钛精矿的有关反应进行热力学分析,认为在电炉熔炼过程中钛精矿中游离的FeO和Fe2O3首先被还原,然后钛精矿中的主要成分FeTiO3按下列顺序逐步被还原:FeO·TiO2→Fe+TiO2→Fe+Ti3O5→Fe+Ti2O3→Fe+TiO;MgO、CaO和Al2O3等杂质在电炉还原熔炼钛精矿的温度(2000K左右)下不可能被还原,从而进入钛渣中;电炉熔炼得到钛渣主要物相为黑钛石,玻璃体硅酸盐相.
The thermodynamics of the reduction smelting of ilmenite in electric furnace is analyzed. It is shown that FeO and Fe_2O_3 in the ilmenite are first reduced, then FeTiO_3, which is the principal constituent of ilmenite, is reduced consecutively as follows: FeO·TiO_2→Fe + TiO_2→Fe + Ti_3O_5→Fe + Ti_2O3→Fe + TiO. The impurities MgO, CaO and Al_2O_3 in the ilemenite can not be reduced at the temperature of (2 000) K, thus entering the titaniferous slag principally composed of anosovite and silicate.
出处
《南方金属》
CAS
2004年第3期10-13,24,共5页
Southern Metals
关键词
钛精矿
电炉熔炼
钛渣
热力学
ilmenite
reduction smelting
titaniferous slag
thermodynamic analysis
