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Investigations on the depressant effect of sodium alginate on galena flotation in different sulfide ore collector systems
Minerals Engineering ( IF 4.8 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.mineng.2020.106705
Wei Chen , Fanfan Chen , Zhihao Zhang , Xiaozhen Tian , Xianzhong Bu , Qicheng Feng

Abstract The depressant effect of sodium alginate on galena flotation in different collector systems was investigated, mainly through micro-flotation tests, zeta potential measurements and molecular dynamics simulations. The micro-flotation results showed that the depressant effect of sodium alginate depended largely on collector type. Galena flotation was effectively and totally depressed by sodium alginate when ammonium dibutyl dithiophosphate acted as collector. When diethyldithiocarbamic acid cyanoethyl ester acted as collector, sodium alginate could only partly inhibit the galena flotation. However, when butyl xanthate acted as collector, sodium alginate could not exhibit any depressant effect on galena flotation. The zeta potential measurement results indicated that these reagents could adsorb on galena surface at different degree of strength and could further result in subsequent different flotation behaviors. The molecular dynamics simulation results demonstrated that the adsorption ability between galena surface and reagents could rank as butyl xanthate > sodium alginate > diethyldithiocarbamic acid cyanoethyl ester > ammonium dibutyl dithiophosphate, which further determined the depressant effect differences. The results could be potentially used for selecting suitable collector type in some sulfide ore flotation plants when sodium alginate acted as galena depressant.

中文翻译:

不同硫化矿捕收剂系统海藻酸钠对方铅矿浮选的抑制作用研究

摘要 主要通过微浮选试验、zeta电位测量和分子动力学模拟研究了海藻酸钠对不同捕收剂体系中方铅矿浮选的抑制作用。微浮选结果表明,海藻酸钠的抑制作用很大程度上取决于捕收剂类型。当二丁基二硫代磷酸铵作为捕收剂时,海藻酸钠能有效抑制方铅矿浮选。当二乙基二硫代氨基甲酸氰乙酯作为捕收剂时,海藻酸钠只能部分抑制方铅矿浮选。然而,当黄原酸丁酯作为捕收剂时,海藻酸钠对方铅矿浮选没有任何抑制作用。zeta 电位测量结果表明,这些试剂可以不同程度地吸附在方铅矿表面,并可能进一步导致后续不同的浮选行为。分子动力学模拟结果表明方铅矿表面与试剂之间的吸附能力依次为黄原酸丁酯>海藻酸钠>二乙基二硫代氨基甲酸氰基乙酯>二丁基二硫代磷酸铵,进一步确定了抑制作用的差异。海藻酸钠作为方铅矿抑制剂时,该结果可潜在用于一些硫化矿浮选厂选择合适的捕收剂类型。分子动力学模拟结果表明方铅矿表面与试剂之间的吸附能力依次为黄原酸丁酯>海藻酸钠>二乙基二硫代氨基甲酸氰基乙酯>二丁基二硫代磷酸铵,进一步确定了抑制作用的差异。海藻酸钠作为方铅矿抑制剂时,该结果可潜在用于一些硫化矿浮选厂选择合适的捕收剂类型。分子动力学模拟结果表明方铅矿表面与试剂之间的吸附能力依次为黄原酸丁酯>海藻酸钠>二乙基二硫代氨基甲酸氰基乙酯>二丁基二硫代磷酸铵,进一步确定了抑制作用的差异。海藻酸钠作为方铅矿抑制剂时,该结果可潜在用于一些硫化矿浮选厂选择合适的捕收剂类型。
更新日期:2021-01-01
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