Pb2+、Zn2+、Ca2+、Mg2+对“菱锌矿—白云石、石英”体系浮选的影响试验研究

通过对菱锌矿、白云石、石英纯矿物溶液离子测定、Pb2+、Zn2+、Ca2+、Mg2+四种金属离子对各纯矿物的回收率试验研究、混合金属离子对“菱锌矿、白云石和石英”体系可浮性的研究表明,随着磨矿细度的提高,溶液pH值变化很小、对氧化铅锌矿分离影响小;随着Pb2+、Ca2+、Mg2+离子浓度的增加,菱锌矿的回收率均出现下降趋势,说明这三种金属离子的存在对菱锌矿的浮选具有抑制作用;Pb2+、Zn2+离子对石英的浮选具有活化作用,Ca2+、Mg2+离子对石英的浮选具有抑制作用。低浓度的Pb2+离子对白云石浮选具有活化作用;Zn2+、Ca2+离子对石英的浮选均具有活化作用;Mg2+对石英的浮选具有抑制作用;四种金属离子混合对“菱锌矿、白云石和石英”体系可浮性均有抑制作用,其中对菱锌矿的抑制作用最为明显,混合离子对目的矿物的抑制作用较脉石矿物强。

Experimental study on the effect of Pb2+, Zn2+, Ca2+, Mg2+ on the Flotation of

Through the determination of ions in the solution of pure minerals such as spambozite, dolomite and quartz, the recovery of Pb2+, Zn2+, Ca2+ and Mg2+ for each pure mineral, and the floatability of mixed metal ions for the system of "Spambozite, dolomite and quartz", it is shown that with the increase of grinding fineness,?The change of pH value of solution is very small, which has little effect on the separation of lead-zinc oxide ore.?With the increase of the concentration of Pb2+, Ca2+ and Mg2+, the recovery of Smithzite decreases, which indicates that the existence of these three metal ions has an inhibitory effect on the flotation of Smithzite.?Pb2+ and Zn2+ ions can activate quartz flotation, while Ca2+ and Mg2+ ions can inhibit quartz flotation.?Low concentration of Pb2+ ions can activate dolomite flotation.?Zn2+ and Ca2+ have activation effect on quartz flotation.?Mg2+ has an inhibitory effect on quartz flotation.?The mixing of four kinds of metal ions has an inhibitory effect on the floatability of the system of "Sphindrite, dolomite and quartz", and the inhibitory effect on sphindrite is the most obvious. The mixed ions have a stronger inhibitory effect on target minerals than gangue minerals.