中文摘要：

通过浮选试验、吸附量分析和Zeta电位测试,研究阿拉伯胶在黄铜矿与滑石浮选分离中的作用,并考察其作用机理。结果表明,在本研究设定的pH范围内,黄铜矿及滑石在丁基黄药作用下具有较好的可浮性,难以实现浮选分离。阿拉伯胶在黄铜矿及滑石表面发生了吸附,但在滑石表面的吸附量显著高于在黄铜矿表面,对滑石表面电位的影响也比对黄铜矿电位的影响大。阿拉伯胶对黄铜矿及滑石均产生了抑制作用,但在pH为5~7的区间内,阿拉伯胶对黄铜矿的抑制作用较弱,对滑石的抑制作用较强。在混合矿分选中使用阿拉伯胶作抑制剂,在混合矿中铜质量分数为15.21%时,可以获得铜质量分数为29.36%,铜回收率81.82%的精矿。

英文摘要：

Flotation separation of chalcopyrite from talc using acacia as depressant was studied and its mechanism was discussed. Results show that both chalcopyrite and talc are floatable in the tested pH range, and the flotation separation of chalcopyrite from talc can＇t be realized without the addition of depressant. Acacia can be adsorbed on the surfaces of both chalcopyrite and talc and depress the flotation of these two minerals. However, in the pH range of 5-7, the depression effect of acacia to chalcopyrite is weak while its depression effect to talc is strong. The flotation test on mixed minerals indicates that the use of acacia as depressant can achieve the flotation separation of chalcopyrite from talc. A concentrate with Cu grade of 29.36% and recovery of 81.82% were achieved with the addition of 100 mg/L acacia at pH7.