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金属矿山 ›› 2016, Vol. 45 ›› Issue (12): 62-65.

• 矿物工程 • 上一篇    下一篇

组合调整剂对铁矿物与石英的浮选分离影响

付亚峰1,姚金1,印万忠1,孙乾予1,薛季玮1,刘明宝2   

  1. 1.东北大学资源与土木工程学院,辽宁 沈阳 110819;2.商洛学院化学工程与现代材料学院,陕西 商洛 726000
  • 出版日期:2016-12-15 发布日期:2017-02-16
  • 基金资助:

    基金项目:国家自然科学青年基金项目(编号:51504053),辽宁省科技厅博士科研启动基金项目(编号:201501157)。

Influence of Combinatorial Regulator on Separation of Iron Minerals and Quartz by Flotation

Fu Yafeng1,Yao Jin1,Yin Wanzhong1,Sun Qianyu1,Xue Jiwei1,Liu Mingbao2   

  1. 1.School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;2.College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China
  • Online:2016-12-15 Published:2017-02-16

摘要: 东鞍山铁矿石因矿石中碳酸盐含量高而难以选别,为寻找适宜的浮选组合调整剂及其用量,提高选别指标,分别以淀粉和CaCl2及其组合为调整剂考察了添加调整剂对赤铁矿、磁铁矿、菱铁矿、铁白云石、石英单矿物可浮性的影响。结果表明:仅添加单一淀粉或CaCl2均不能实现铁矿物与石英的分离,当淀粉与CaCl2组合使用且pH>11时,石英与铁矿物可浮性差异较大。对东鞍山现场铁品位为50.88%的混磁精采用淀粉与CaCl2为组合调整剂,RA715为捕收剂经1粗1精浮选试验,获得了铁品位为64.06%、回收率为61.96%的浮选精矿,与现场工艺指标相比,铁品位和回收率分别提高了1.33和6.01个百分点。

关键词: 组合调整剂, CaCl2, 淀粉, 含碳酸盐铁矿石, 反浮选

Abstract: It is difficult to have good separation index for Donganshan iron ore because of the high carbonate content.In order to find a suitable combination regulator and dosage,starch and CaCl2 and their combinations as regulator on floatability of hematite,magnetite,siderite,iron dolomite and quartz single minerals were investigated respectively.The results show that the addition of single starch or CaCl2 can not separate iron minerals from quartz.When the pH value is higher than 11,there is large difference in floatability of quartz and iron minerals when starch is used in combination with CaCl2.One roughing,one cleaning flotation process was conducted on Dongshan mixed magnetic concentrate (50.88% Fe) using starch and CaCl2 combination as modifier,and RA715 as collector.Flotation concentrate with iron grade of 64.06% and recovery rate of 61.96% was obtained,compared with the on-site process,iron grade and recovery were increased by 1.33 and 6.01 percentage points respectively.

Key words: Combine regulators, CaCl2, Starch, Iron carbonate bearing in iron ore, Reverse flotation