Study on Process and Reagent Interaction Mechanism in Low Grade Collophanite Flotation
According to the difficulty of dolomite removal from coliophanite, normal-reverse floatation process has been adopted in floatation with the use of highly selective collector G-4 and depressant S721. Good indexes of flotation have been obtained with the run-of-mine ore containing 17.96 %P2O5 and 2.31% MgO being upgraded to a concentrate containing more than 30% P2Os and less than 1% MgO. The reagent interaction mechanism in low grade collophanite flotation has been studied by FTIR analysis and theoretical calculation. The results indicate that the interaction between collector G-4 and collophanite is the result of chemical adsorption in combination with physical adsorption with chemical adsorption playing the major role. Depressant S721 adsorbs on dolomite surface to form a water film and effectively depresses the flotation of dolomite and reduces the MgO content in the concentrate.
Collophanite Normal-reverse floatation Reagent interaction mechanism
H. M. Gao Y. Leng X. R. Wang Z. Q. Jing Y. L. Mao L. Y. Zhang Y. B. Zhu J. F. Guan
Department of Mineral Processing, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 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
1395-1401
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）