Flotation separation of wolframite from calcite using a new trisiloxane surfactant as collector  

作　　者：Shuyi Shuai Zhiqiang Huang Vladimir E.Burov Vladimir Z.Poilov Fangxu Li Hongling Wang Rukuan Liu Shiyong Zhang Chen Cheng Wenyuan Li Xinyang Yu Guichun He Weng Fu 

机构地区：[1]Jiangxi Province Key Laboratory of Mining Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China [2]Department of Chemical Engineering,Perm National Research Polytechnic University,Perm 614990,Russia [3]Guangdong Institute of Resources Comprehensive Utilization,Guangzhou 510650,China [4]Hunan Academy of Forestry,Changsha 410004,China [5]School of Chemical Engineering,University of Queensland,St Lucia 4072 QLD,Australia

出　　处：《International Journal of Mining Science and Technology》2023年第3期379-387,共9页矿业科学技术学报（英文版）

基　　金：This work was supported by the Natural Science Foundation of Jiangxi,China(Nos.20202ACBL213008 and 20202ZDB01005)。

摘　　要：Since wolframite is usually associated with calcite,the separation and enrichment of wolframite by froth flotation remains a great challenge.Herein,a novel trisiloxane surfactant N-(2-aminoethyl)-3-ami nopropyltrisiloxane(AATS)was successful synthesized,which was used for the separation of wolframite from calcite for the first time.The flotation separation performance of AATS was studied by flotation test,and its adsorption mechanism was explored based on contact angle,infrared spectrum analysis(FTIR),zeta potential and density functional theory(DFT)calculation.The results of microflotation test and binary mixed ore flotation test pointed that AATS had excellent selectivity and more prominent collection capacity for the flotation of wolframite when compared with industrial reagent sodium oleate(NaOL).The measurement results of contact angle proved that AATS improved the hydrophobicity of the wolframite surface.The highly selective adsorption mechanism of AATS surfactant on mineral surfaces were further researched and analyzed by FTIR and zeta potential.The results revealed that AATS surfactant had significant adsorption effect on wolframite,yet almost no adsorption on calcite.DFT calculation indicated that AATS produced electrostatic adsorption with wolframite surface through—N+H3 group.

关 键 词：FLOTATION WOLFRAMITE CALCITE Trisiloxane surfactant ADSORPTION 

分 类 号：TD954[矿业工程—选矿] TD923