材料期刊网

Separation of Iron Droplets From Titania Bearing Slag

WANG Mingyu , LOU Taiping , ZHANG Li , SUI Zhitong

钢铁研究学报(英文版)

Owing to smelting vanadiumtitanium magnetite ore, the amount of iron entrainment in slag as droplets is far higher than that in conventional BF slag. However, the iron droplets can be easily settled by blowing air into the molten slag. The results show that more than 80% of iron droplets in titania bearing slag can be settled and separated after treatment. The temperature rise of molten slag during the oxidizing process and the decreased viscosity caused by the component change of slag as well as air stirring in slag both accelerate the iron droplets settling. The vanadium content in the settled iron droplets and the original iron droplets was obtained by chemical analysis. The possible reason for the increased vanadium in the settled iron droplets was discussed by thermodynamic principles.

关键词: titania bearing slag;oxidation;viscosity change;temperature change;phase separation