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研究抑制剂甘油基黄原酸钠(SGX)在铁闪锌矿与黄铁矿浮选分离过程中的作用机理。通过浮选实验考察该抑制剂对硫化矿物的浮选抑制行为。结果表明,用丁黄药作捕收剂,在SGX存在下铁闪锌矿能被Cu2+活化从而具有良好的可浮性,而黄铁矿不能被Cu2+活化;在pH为4-11的范围,SGX的用量小于50mg/L时,可以实现两种矿物的选择性分离。动电位分析表明,SGX在Cu2+存在的条件下不能阻止丁黄药的阴离子在铁闪锌矿表面的吸附,但能阻止丁黄药的阴离子在黄铁矿表面的吸附。吸附等温测试结果表明,SGX在黄铁矿表面的吸附量远比在铁闪锌表面量大。
The mechanism of the inhibitor sodium glycyrrhizinate (SGX) in flotation separation of marmatite and pyrite was studied. Flotation experiments were conducted to investigate the flotation inhibition of sulfide minerals by this inhibitor. The results showed that with the use of butyl yellow as collector, the wickerite can be activated by Cu2 + in the presence of SGX so that it has good floatability and pyrite can not be activated by Cu2 +. In the range of pH 4-11, When the amount of SGX is less than 50mg / L, the selective separation of the two minerals can be achieved. Potentiodynamic analysis showed that SGX could not inhibit the adsorption of butyl xanthate anions on the surface of marmatite in the presence of Cu 2+, but could prevent the absorption of butyl anions on pyrite surface. The results of adsorption isotherm show that the adsorption capacity of SGX on pyrite surface is much larger than that of iron-zinc-zinc surface.