| 贫磁铁矿反浮选降硅试验 |
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| 引用本文： | 张汉泉,汪凤玲.贫磁铁矿反浮选降硅试验[J].武汉工程大学学报,2012,34(2):50-54,62. |
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| 作者姓名： | 张汉泉 汪凤玲 |
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| 作者单位： | 武汉工程大学环境与城市建设学院,湖北武汉,430074 |
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| 摘 要： | 湖北省某地具有较为丰富铁矿资源,矿石中铁含量较低,原矿中全铁(TFe)含量约15%,属于贫磁铁矿,铁矿物的嵌布粒度较细,通过单一弱磁选很难得到全铁品位超过60%的铁精矿,针对该矿弱磁选精矿进行反浮选提铁脱硅研究,一粗一精开路反浮选流程精矿品位可达60%以上,铁回收率60%,产率50%左右.通过小型闭路试验,反浮选最终获得较好指标:精矿产率为68.57%,品位为58.62%,回收率为82.83%.
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| 关 键 词： | 贫磁铁矿 反浮选 提铁脱硅 |
Reverse flotation for silicon dioxide reduction of low- grade magnetite |
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| Authors: | ZHANG Han-quan WANG Feng-ling |
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| Affiliation: | (School of Environment and Civil Engineering,Wuhan Institute of Technology,Wuhan 430074,China) |
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| Abstract: | Iron ore resource of Hubei is relatively rich,but iron content is low,about 15 % only,belonging to low-grade magnetite.Particle size is so fine that it is difficuit to improve the grade of concentrate over 60 % through weak magnetic separation.Based on reverse flotation for silicon dioxide reduction of iron ore,the results of tests show that the grade of iron concentrate is over 60 %,recovery is 60 % and production rate is about 50 % by adopting a circuit of one rough floatation and one concentrating.Good flotation index gets at last through closed-circuit test : the concentrate production rate is 68.57 %,the grade is 58.62 %,and the recovery rate is 82.83 %. |
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| Keywords: | low-grade magnetite reverse flotation reduce silicon dioxide to raise iron content |
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