常见金属阳离子对黑云母浮选行为影响研究

摘要

The influences of metallic cations such as Ca2+,Mg2+,Cu2+,Fe3+,Pb2+,Al3+ on the floatability of the biotite in the collector system of sodium oleate were investigated and the mechanism was analyzed by the chemical calculation.The results showed that six kinds of metal cations can activate the biotite under alkaline conditions in the collector system of sodium oleate,and the activation of Cu2+,Fe3+ and Al3+ on the biotite are the strongest,next is Pb2+,and Ca2+ and Mg2+ is the weakest.The dominant component by which Ca2+ can activate the flotation of biotite is hydroxyl complexes;The dominant component by which Mg2+ and Cu2+,Fe3+ and Al3+ activate biotite is hydroxide precipitation;Both of hydroxyl complexes and hydroxide precipitation of Pb2+ are the superiority to activate the biotite.%研究了在油酸钠捕收剂体系中金属阳离子Ca2+、Mg2+、Cu2+、Fe3+、Pb2+、A13+对黑云母纯矿物可浮性的影响,并通过溶液化学计算探讨其作用机理.试验结果表明:①在油酸钠捕收体系中,6种金属阳离子在碱性条件下对黑云母都有活化作用,其中Cu2+、Fe3+、Al3+的活化作用最强,pb2+次之,Ca2+、Mg2+的活化作用最弱.②Ca2+对黑云母浮选起活化作用的主要组分是羟基络合物;Mg2+、Cu2+、Fe3+和A13+对黑云母起活化作用的优势组分主要是氢氧化物沉淀;pb2+的羟基络合物和氢氧化物沉淀都是活化黑云母的优势组分.