小分子有机抑制剂对黄铜矿和方铅矿浮选行为的影响

研究了以乙硫氮为捕收剂的浮选体系中，新型抑制剂O，O-二(2，3-二羟基丙基)二硫代磷酸(DHDTP)对黄铜矿和方铅矿可浮性的影响，并通过动电位和红外光谱测试分析，探讨了DHDTP与矿物之间的相互作用机理.浮选试验结果表明:在pH=4~10的范围内，DHDTP对黄铜矿的抑制作用很弱，而对方铅矿却有很好的抑制效果；随着DHDTP用量的增加，方铅矿的回收率迅速下降，而黄铜矿的回收率只有小幅度的降低，这是因为方铅矿与DHDTP之间的吸附能力明显强于黄铜矿.

Effects of Small Molecule Organic Depressants on the Flotation Behavior of Chalcopyrite and Galena

The effects of the new depressant O， O bis(2， 3 dihydroxypropyl) dithiophosphate(DHDTP) on the flotability of the chalcopyrite and galena in the floatation system with diethyldithiocarbamate as a collector were investigated. The interaction mechanism between DHDTP and the minerals was also explored through zeta potential and infrared spectrum analysis. Flotation test results showed that in the range of pH=4~10， the DHDTP had slightly inhabition effect on the chalcopyrite while strong inhibition effect on the galena. With the increase of DHDTP content， the recovery rate of the galena decreased rapidly while that of the chalcopyrite decreased slightly， which was due to the adsorption capacity of DHDTP on the galena was much stronger than that on the chalcopyrite.