2,3-二羟基丙基二硫代碳酸钠对铜铅硫化矿可浮性的影响

在丁铵黑药浮选体系中,研究含有—OH和—CSS—的2,3-二羟基丙基二硫代碳酸钠（SGX）对黄铜矿和方铅矿的抑制效果,并通过动电位和吸附量的测试,探讨抑制剂SGX与矿物的相互作用机理。浮选试验研究结果表明：在整个p H范围内,抑制剂SGX对黄铜矿有活化作用,而对方铅矿有很强的抑制作用。随着抑制剂SGX用量的增加,方铅矿的回收率迅速下降,而黄铜矿的回收率有小幅度的升高。在矿浆p H为6的条件下,人工混合矿浮选得出的精矿中铜的品位和回收率分别为29.52%和82.15%。通过动电位和吸附量的测试结果可知,抑制剂SGX在方铅矿表面有较强的吸附,而在黄铜矿表面吸附很弱。

Influence of sodium 2,3-dihydroxypropyl dithiocarbonate on floatability of chalcopyrite and galena

Sodium 2,3-dihydroxypropyl dithiocarbonate（SGX）, which contains —OH and —CSS— in the molecule, was used to explore selective depression of galena from chalcopyrite in the flotation tests with ammonium dibutyl dithiophosphate（DDTP）, and zeta potential and adsorption measurements were performed to study the interaction between SGX and minerals. The flotation tests of single minerals show that SGX has slight activation on chalcopyrite and strong depression on galena in the whole p H range. With SGX dosage increasing, the recovery of galena decreases rapidly, while that of chalcopyrite increases slightly. At p H=6, the copper grade and recovery of concentrate are 29.52% and 82.15% respectively when mixture of two minerals is tested. Zeta potential and adsorption measurements indicate that SGX has strong adsorption on galena and slight adsorption on chalcopyrite.