Study on Mechanism of Sodium Sulfide by Flotation of Lead and Zinc Oxysalt Minerals
In this paper, various methods, such as XPS, XRD, SEM and zeta potential measurement are applied to investigate the action mechanism of sodium sulfide in flotation of lead and zinc oxysalt minerals. The experimental results show that the mechanisms of sodium sulfide in flotation of lead oxysalt minerals and zinc oxysalt minerals are different: on the surface of cerusite, there is lead sulfide phase formed under the reaction of sodium sulfide, resulting that the cerusite surface shows the form of galena, which is advantageous to the adsorption of anion collector and improves the floatability of cerusite as a result. On the surface of zinc oxysalt minerals, there is no zinc sulfide phase formed, but the sodium sulfide increases its surface electronegativity, and enhances the adsorption of cation collector lauryl amine, so the floatability of zinc oxysah minerals is improved. The difference of action mechanisms of sodium sulfide on lead and zinc oxysalt minerals exactly explains the reason why different collectors are selected in the flotation of cerusite and smithsonite, which are both carbonate minerals although.
Cerusite Zinc oxysalt minerals Sodium sulfide Action mechanism
J. H. Chen C. Y. Sun S. S. Lu
Beijing General Research Institute of Mining and Metallurgy BGRIMM, State Key Laboratory of Mineral Processing, Beijing, China.
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1332-1336
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）