摘要
考察了以BK430作为捕收剂对中国铝土矿资源中一水硬铝石、伊利石和高岭石3种典型矿物的浮选行为。单矿物试验结果表明:在不添加抑制剂和弱酸性条件下,BK430对高岭石和伊利石的捕收力明显强于一水硬铝石;添加一水硬铝石抑制剂DF,有助于进一步扩大一水硬铝石与2种铝硅酸盐矿物的可浮性差异;人工混合矿的试验结果与单矿物试验结果比较吻合。对河南某铝硅比为4.43的铝土矿进行了反浮选脱硅试验,经过脱泥—反浮选可以获得Al2O3/SiO2为9.21,Al2O3回收率为62.49%的精矿。BK430有望成为一种在近中性条件下铝土矿反浮选的脱硅捕收剂。
Flotation behavior of three typical bauxite resources in China was investigated using BK430 as collector. Monomineral experiment results showed that： BK430 have more intensively collecting ability for kaolinite and illite than diaspore with no depressor and weak acid conditions; the collecting ability was enlarged further when added with depressor DF for diaspore; artificial mixed minerals and monomineral test results fit well. Reverse flotation tests for desilieation have been carried out on a bauxite, Henan, with alumina silica ratio of 4.43. After desliming--reverse flotation process, concentrate with A1203/SiO2 of 9.21, A1203 recovery of 62.49% was received. BK430 is expected to become a reverse flotation collector for desilication of bauxite under nearly neutral condition.
出处
《现代矿业》
CAS
2014年第6期10-14,共5页
Modern Mining
基金
国家高新技术研究发展计划(863计划)资助(项目编号:2013AA064102)
北京矿冶研究总院院基金项目资助(编号:YJ-2012-03)
关键词
铝土矿
反浮选
BK430
近中性
Bauxite, Reverse flotation, BK430, Nearly neutral
