【摘 要】
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This study used specularite,a high-gradient magnetic separation concentrate,as a raw material in reverse flotation.An iron concen-trate with a grade of 65.1wt％an
【机 构】
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National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology,Institute of Pro
论文部分内容阅读
This study used specularite,a high-gradient magnetic separation concentrate,as a raw material in reverse flotation.An iron concen-trate with a grade of 65.1wt％and a recovery rate of 75.31％were obtained.A centrifugal concentrator served as the deep purification equip-ment for the preparation of iron oxide red pigments,and its optimal rotating drum speed,feed concentration,and other conditions were determ-ined.Under optimal conditions,a high-purity iron oxide concentrate with a grade of 69.38wt％and a recovery rate of 80.89％were obtained and used as a raw material for preparing iron oxide red pigment.Calcining with sulfuric acid produced iron red pigments with different hues.Simultaneously,middlings with a grade of 60.20wt％and a recovery rate of 17.51％were obtained and could be used in blast furnace ironmak-ing.High-value utilization of specularite beneficiation products was thus achieved.
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