组合调整剂对铁矿物与石英的浮选分离影响

发布时间：2018-03-26 04:53

本文选题：组合调整剂　切入点：CaCl　出处：《金属矿山》2016年12期

【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CaCl_2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CaCl_2均不能实现铁矿物与石英的分离,当淀粉与CaCl_2组合使用且pH11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CaCl_2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。
[Abstract]:Donganshan iron ore is difficult to be separated because of its high carbonate content. In order to find suitable flotation combination adjuster and its dosage and to improve the separation index, starch, CaCl_2 and their combination are used as adjuvant respectively to investigate the effect of adding adjustment agent on hematite. The effect of single mineral floatability of magnetite, siderite, dolomite and quartz. The results show that the separation of iron ore from quartz can not be realized by adding only single starch or CaCl_2. When the mixture of starch and CaCl_2 is used and pH11 is used, The floatability of quartz and iron minerals is quite different. The flotation concentrate with iron grade of 64.06% and recovery rate of 61.96% has been obtained by using starch and CaCl_2 as the combined adjuster and RA715 as collector after flotation test of quartz and iron mineral floatability in Donganshan, where the iron grade is 50.88%. The iron grade and recovery increased by 1.33% and 6.01%, respectively.
【作者单位】：东北大学资源与土木工程学院;商洛学院化学工程与现代材料学院;
【基金】：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)
【分类号】：TD923.14

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