期刊
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
卷 36, 期 4, 页码 223-226出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/08827508.2014.928620
关键词
Hematite ore; simultaneously roasting; magnetic separation; siderite ore
During the roasting process, siderite (FeCO3) transforms to magnetite (Fe3O4) along with producing carbon monoxide (CO), but hematite (Fe2O3) needs CO to reduce into magnetite. The process of simultaneously roasting and magnetic separation was developed to treat the low grade siderite and hematite ores without adding any reductant. Effect of mass ratio of S-to-H (siderite ore to hematite ore) on the separation indexes of iron concentrate was discussed. X-ray diffraction was also employed to detect the phase transformations of roasted ores. The technology of simultaneously roasting and magnetic separation is an effective way to treat low grade siderite and hematite ores, and also reduce the emission of CO2 because no ruductant is added.
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