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鲕状赤铁矿铁品位高、储量大,因其特殊的结构且含磷较高,成为国内外选矿技术的难点之一.对鲕状赤铁矿的选矿工艺从直接入选、磁化焙烧-磁选、深度还原3类进行了系统归纳和总结,并介绍了3类工艺的分选机理.指出直接入选能耗低,污染少,但对磨矿细度有要求,矿石泥化严重;磁化焙烧-磁选是目前处理鲕状赤铁矿行之有效的办法,精矿指标较好,但磷含量较高;深度还原法处理鲕状赤铁矿,能够进一步提高精矿指标,但能耗高、工艺复杂.此外,从物理法、化学法和微生物法3个方面评述了鲕状赤铁矿有害杂质磷的脱除,建议结合技术经济来考察和分析其脱磷效果.
Oolitic hematite has high grade and large reserves because of its special structure and high phosphorus content, which has become one of the difficulties in mineral processing technology at home and abroad.Oil oolitic hematite beneficiation process from the direct selection, magnetization roasting - magnetic The results show that the direct selection of low energy consumption, less pollution, but the requirements of grinding fineness, serious ore mud; magnetization roasting - Magnetic separation is currently an effective way to deal with oolitic hematite, with a good concentrate index but a high phosphorus content. Deep reduction treatment of oolitic hematite can further improve the ore concentrate, but its energy consumption is high , The process is complicated.In addition, the dephosphorization effect of oolitic hematite harmful impurities is reviewed in terms of physical, chemical and microbiological methods.