抑制剂EMY-01在高黏土型黄铁矿浮选分离中的应用

Application of Inhibitor EMY-01 on Flotation Separation of High Clay Type Pyrite

黏土矿物主要包括高岭石、叶蜡石、蒙脱石、绿泥石、滑石等层状结构铝硅酸盐矿物。这些矿物通常硬度低,在磨选过程中易浮易泥化,恶化目的矿物的浮选环境。易浮黏土矿物的新型高效选择性抑制剂的开发和应用,是高黏土型矿石稳定有效选别的技术关键。针对西南某高黏土型黄铁矿的硫硅浮选分离,基于黏土矿物的结构性质,研发了非硫化物铝硅酸盐脉石的专属抑制剂EMY-01和“捕收剂抑制剂作用顺序调控—强化选择性抑制”浮硫工艺。条件试验结果表明,当矿石中-0.045 mm粒级占91.16%,抑制剂EMY-01用量为900 g/t时,可以取得较好的试验结果。在此基础上进行的闭路试验结果表明,以EMY-01为抑制剂可以获得S品位50.16%、S回收率97.12%的高纯硫精矿,说明采用EMY-01为抑制剂可以实现高黏土含量型硫化矿石的有效开发利用。

Clay minerals mainly include kaolinite,pyrophyllite,montmorillonite,chlorite,talc and other layered aluminosilicate minerals.These minerals usually have low hardness and are easy to float and slime in the process of grinding and flotation,which worsens the flotation environment of target minerals.The development and application of new high-efficiency selective inhibitors of clay minerals are the key technologies for stable and effective separation of high clay content minerals.Aiming at the flotation separation of a high clay pyrite in Southwest,based on the structure and properties of clay minerals,a special depressant for aluminosilicate gangue and"sequential regulation of the action of collector inhibitors and enhanced selective suppression"floating sulfur process were developed.Conditional test results showed that when the content of-0.045 mm in the ore is 91.16%and the amount of inhibitor EMY-01 is 900 g/t,good test results could be obtained.The closed-circuit test results based on the conditional test showed that EMY-01 as an inhibitor could obtain sulfur concentrate with sulfur grade of 50.16%and sulfur recovery rate of 97.12%.The results showed that the use of EMY-01 as an inhibitor could realize the effective development and utilization of high clay content sulfide ores.