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。
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 p H 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.
作者
付亚峰
姚金
印万忠
孙乾予
薛季玮
刘明宝
Fu Yafeng Yao Jin Yin Wanzhong Sun Qianyu Xue Jiwei Liu Mingbao(School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China)
出处
《金属矿山》
CAS
北大核心
2016年第12期62-65,共4页
Metal Mine
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)
关键词
组合调整剂
CACL2
淀粉
含碳酸盐铁矿石
反浮选
Combine regulators
CaCl2
Starch
Iron carbonate bearing in iron ore
Reverse flotation
作者简介
付亚峰（1991-），男，博士研究生。
通讯作者姚金（1982-），男，博士后。
