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金属矿山 ›› 2014, Vol. 43 ›› Issue (04): 87-90.

• 矿物工程 • 上一篇    下一篇

羟肟酸(钠)体系中微细粒赤铁矿的浮选行为

周亮1,2,张芹1,2,王永龙1,2,陈婉琦1,2   

  1. 1.武汉科技大学资源与环境工程学院,湖北 武汉 430081; 2.冶金矿产资源高效利用与造块湖北省重点实验室,湖北 武汉 430081
  • 出版日期:2014-04-15 发布日期:2014-09-05
  • 基金资助:

    * 国家自然科学基金面上项目(编号:50974099)。

Flotation Behavior of Ultrafine Hematite in Hydroximic Flotation System

Zhou Liang1,2,Zhang Qin1,2,Wang Yonglong1,2,Chen Wanqi1,2   

  1. 1.College of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan 430081,China
  • Online:2014-04-15 Published:2014-09-05

摘要: 通过单矿物浮选试验研究了羟肟酸体系和羟肟酸钠体系中微细粒赤铁矿的浮选行为,结果发现:常温和自然pH下,两种捕收剂对微细粒赤铁矿的捕收能力都较弱,回收率分别只能达到44.00%和52.42%;加温或调整pH对改善羟肟酸的浮选效果作用不大或反而起反作用,但可使羟肟酸钠对微细粒赤铁矿的回收率分别提高10.68和4.20个百分点,此外,若在加药完毕后继续搅拌调浆一段时间,也可较大幅度地提高羟肟酸钠对微细粒赤铁矿的回收率。在此基础上进一步考察了羟肟酸钠体系中六偏磷酸钠、硅酸钠、焦磷酸钠、淀粉、腐植酸钠这5种抑制剂对微细粒赤铁矿可浮性的影响,结果表明,5种抑制剂均可产生较强的抑制作用,其抑制能力的强弱排序为焦磷酸钠>硅酸钠>六偏磷酸钠>淀粉>腐植酸钠。

关键词: 微细粒赤铁矿, 羟肟酸, 羟肟酸钠, 单矿物浮选, 抑制剂

Abstract: Flotation behavior of ultrafine hematite in hydroximic acid and sodium hydroximic system was studied through monomineral flotation experiments. The results showed that under normal temperature and natural pH,two kinds of collectors have weakly collecting ability with the iron recovery rate of only 44.00% and 44.00% respectively; Heating or adjusting pH has a less or negative effect in improving hydroximic acid flotation behavior,but can increase iron recovery of ultrafine hematite by 10.68% and 4.20% respectively with the sodium hydroximic system. In addition,the recovery will be increased significantly by continually stirring for a period after medication. Flotation behavior of ultrafine hematite affecting by five types of regulators (sodium hexametaphosphate,sodium silicate,sodium pyrophosphate,starch,sodium humate) in sodium hydroxamate flotation system were further investigate. The results showed all five kinds of depressors generated high depression effect,and its depressing performance is behaved in the order of sodium pyrophosphate > sodium silicate > sodium hexametaphosphate > starch > sodium humic.

Key words: Ultrafine hematite, Hydroxamate acid, Sodium hydroxamate, Monomineral flotation, Depressor