Abstract:For realizing the effective flotation of refractory copper ox-idized ores and developing the activation-flotation theory ,the influencesof nine different organic chelating agents on xanthate collection power ...Abstract:For realizing the effective flotation of refractory copper ox-idized ores and developing the activation-flotation theory ,the influencesof nine different organic chelating agents on xanthate collection power andits adsorption characteristies were studied in the flotation of malachite andchrysocolla representatively selected by means of XPS, IR, absorbed quanti-ty measurements and flotation tests.For easily-dissolved malachite fiotation, a small amount of chelatingagent can obviously enhance xanthate collecting power and,make malachitefloated easily, and so reduces the consumption of xanthate. For hard-dis-solved chrysocolla ,chelating agent is able to increase its recovery to 90%,but the chelating agent consumption is high. Chelating agent and xanthatecan produce synergistic adsorptions, which follow Freundlich‘s adsorptionequation on malachite and Chrysocolla surfaces. The high chemical activityof chelating agent and its synergistic activation on xanthate are the key toimproving xanthate展开更多
基金the major scientific instruments and equipment development project of the Ministry of Science and Technology,China(2012YQ18011805)the science and technology project from the technology bureau of Chengdu(2014HM0100099SF)the project of science and technology innovation team of Sichuan province(2015TD0020)
文摘Abstract:For realizing the effective flotation of refractory copper ox-idized ores and developing the activation-flotation theory ,the influencesof nine different organic chelating agents on xanthate collection power andits adsorption characteristies were studied in the flotation of malachite andchrysocolla representatively selected by means of XPS, IR, absorbed quanti-ty measurements and flotation tests.For easily-dissolved malachite fiotation, a small amount of chelatingagent can obviously enhance xanthate collecting power and,make malachitefloated easily, and so reduces the consumption of xanthate. For hard-dis-solved chrysocolla ,chelating agent is able to increase its recovery to 90%,but the chelating agent consumption is high. Chelating agent and xanthatecan produce synergistic adsorptions, which follow Freundlich‘s adsorptionequation on malachite and Chrysocolla surfaces. The high chemical activityof chelating agent and its synergistic activation on xanthate are the key toimproving xanthate
