Flotation mechanisms of molybdenite fines by neutral oils

作     者：Qing-quan Lin Guo-hua Gu Hui Wang You-cai Liu Jian-gang Fu Chong-qing Wang 

作者机构：Jiangxi Copper Technology Research Institute Co.Ltd.Jiangxi Copper Corporation School of Chemistry and Chemical EngineeringCentral South University School of Minerals Processing and BioengineeringCentral South University 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2018年第25卷第1期

页      面：1-10页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 

基　　金：financial support by the Fundamental Research Funds for the Central Universities of Central South University (No. 2016zzts103) the National Natural Science Foundation of China (No. 51374249) the National Science-technology Support Plan (No. 2015BAB12B02) the technical support provided by Guangdong Provincial Science and Technology Plan (No. 2013B090800016) 

主　　题：molybdenite fines flotation mechanisms neutral oils interfacial interaction hydrophobic attraction 

摘      要：The flotation mechanisms of molybdenite fines by neutral oils were investigated through microflotation test, turbidity measure- ments, infrared spectroscopy, and interracial interaction calculations. The results of the flotation test show that at pH 2-11, the floatability of molybdenite fines in the presence of transformer oil is markedly better than that in the presence of kerosene and diesel oil. The addition of transformer oil, which enhances the floatability of molybdenite fines, promotes the aggregation of molybdenite particles. Fourier transform infrared measurements illustrate that physical interaction dominates the adsorption mechanism of neutral oil on molybdenite. Interracial inte- raction calculations indicate that hydrophobic attraction is the crucial force that acts among the oil collector, water, and molybdenite. Strong hydrophobic attraction between the oily collector and water provides the strong dispersion capability of the collector in water. Furthermore, the dispersion capability of the collector, not the interaction strength role in the flotation system of molybdenite fines. Our findings provide between the oily collectors and molybdenite, has a highly significant insights into the mechanism ofmolybdenite flotation.