澳大利亚某锂辉石矿石浮选试验

Experimental Research on a Spodumene Flotation in Australia

针对澳大利亚某锂辉石矿石因风化导致其可选性变差的问题,在对矿石进行工艺矿物学研究的基础上进行了浮选试验。结果表明,矿石在磨矿细度为-74μm占74%、加药与浮选温度均为25℃左右的情况下,采用1次浮选流程浮选易浮矿物(碳酸钠用量为1 500 g/t、环烷酸皂为20 g/t),2粗2精浮选流程浮选锂矿物(粗选1氢氧化钠用量为900 g/t、氯化钙用量为170 g/t、-YS07用量为756 g/t、柴油用量为100 g/t,粗选2氢氧化钠用量为100 g/t、氯化钙用量为30 g/t、-YS07用量为50 g/t),最终获得Li2O品位为5.58%,Li2O回收率为82.11%的锂精矿。

Aiming at the problem of selectivity deterioration with spodumene in Australia due to weathering,flotation tests were carried out on the basis of the process mineralogy.The results showed that when the grinding fineness is-74μm of74%,and the dosing and flotation temperature are both about 25℃,easy-floating minerals were floated using one-time flotation process(The dosage of sodium carbonate is 1 500 g/t and the dosage of naphthenic acid soap is 20 g/t).Two roughing-two cleaning flotation process was adopted for lithium minerals(The dosage of sodium hydroxide,calcium chloride,-YS07 and diesel oil are 900 g/t,170 g/t,756 g/t,and 100 g/t,respectively,in roughing one.The dosage of sodium hydroxide,calcium chloride and-YS07 are 100 g/t,30 g/t,50 g/t,respectively,in roughing two.).Finally,lithium concentrate with Li2O grade of 5.58%and recovery rate of 82.11%was obtained.