Flotation separation of spodumene and albite with activation of calcium ion hydrolysate components  

作　　者：Xian-Ping Luo Yong-Bing Zhang He-Peng Zhou Fan-Xin Xie Zhi-Zhao Yang Bo-Yuan Zhang Cai-Gui Luo 

机构地区：[1]Engineering Research Center for High-Efficiency Development and Application Technology of Tungsten Resources(Jiangxi University of Science and Technology),Ministry of Education,Ganzhou,341000,China [2]Jiangxi Province Key Laboratory of Mining and Metallurgy Environmental Pollution Control,Jiangxi University of Science and Technology,Ganzhou,341000,China

出　　处：《Rare Metals》2022年第11期3919-3931,共13页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52064017);the Program of Qingjiang Excellent Young Talents,Jiangxi University of Science and Technology;the Natural Science Foundation of Jiangxi Province(No.20202BABL204034);the Science and Technology Research Project of Education Department of Jiangxi Province(No.GJJ190425);the Youth Jinggang Scholars Program in Jiangxi Province。

摘　　要：It is difficult to separate spodumene and albite by flotation with calcium ion as activator.In this study,microflotation experiment,solution chemistry calculation,density functional theory(DFT)calculation and X-ray photoelectron spectroscopy(XPS)analysis were conducted to investigate the effect mechanism of c alcium hydrolysate on the flotation separation of spodumene and albite.Results show that the weak interaction intensity of Ca^(2+)with O atoms on the mineral surface makes it difficult to activate minerals effectively.The O atom in the hydroxyl group of Ca(OH)^(+)and Ca(OH)_(2)can be strongly bonded with Al atom on the mineral surface,which greatly improves the adsorption strength.After the activation of Ca(OH)^(+),the adsorption forms of collectors on the surface of spodumene and albite are quite different,and the adsorption intensity on the surface of spodumene is higher,which is conducive to the flotation separation of spodumene and albite.After the action of Ca(OH)_(2),the adsorption of the collector on the albite surface is stronger than that of spodumene,which is not conducive to the flotation separation of the two minerals.By adjusting the initial concentration of calcium ions and pulp pH,Ca(OH)^(+)is the main active component,which is the key to improve the separation effect of spodumene and albite.

关 键 词：SPODUMENE ALBITE Calcium ions Hydrolysate components FLOTATION SEPARATION 

分 类 号：TD923[矿业工程—选矿]