Selective flotation of smithsonite from dolomite by using novel mixed collector system

作     者：Li WANG Guang-yan HU Wei SUN SultanAhmed KHOSO Run-qing LIU Xiang-feng ZHANG 王丽;胡广艳;孙伟;Sultan Ahmed KHOSO;刘润清;张祥锋

作者机构：School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral ResourcesCentral South UniversityChangsha 410083China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2019年第29卷第5期

页      面：1082-1089页

核心收录：

学科分类：081902[工学-矿物加工工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Project(51704329) supported by the National Natural Science Foundation of China Project(2018YFC1901901) supported by the National Key Scientific Research Project of China 

主　　题：flotation smithsonite dolomite sodium oleate benzohydroxamic acid sulfuration 

摘      要：A novel mixed collector (BHOA) was prepared by mixing benzohydroxamic acid (BHA) and sodium oleate (NaOL) and applied to the flotation separation of smithsonite from dolomite. Flotation results showed that NaOL alone had good collecting performance on smithsonite and common gangue mineral dolomite but had poor selectivity. By using a BHA/NaOL mixed system with a molar ratio of 2:1, the recoveries of smithsonite and dolomite reached approximately 90% and 5%, respectively. Surface tension analysis showed that the surface activity of BHOA was a little higher than that of a single NaOL because of synergistic effects. Zeta potential and X-ray photoelectron spectroscopy measurements indicated that surfactants BHA and NaOL co-absorbed on the smithsonite surface and only NaOL was present on the dolomite surface in the presence of BHOA.