矿产保护与利用2024，Vol.44Issue(1)：61-66,6.DOI:10.13779/j.cnki.issn1001-0076.2024.01.008
羧甲基纤维素对磷灰石与白云石浮选分离的影响及机理研究
Effect and Mechanism of Carboxymethyl Cellulose on Flotation Separation of Apatite Against Dolomite
摘要
Abstract
Effect of carboxymethyl cellulose(CMC)in sodium oleate system on the flotation separation of apatite against dolomite in single mineral experiments was investigated in this study,and its mechanism was further studied through infrared spectrum analysis and Zeta potential analysis.The recovery of apatite and dolomite both attained 90%with 100 mg/L sodium oleate,and changed to 95.52%and 4.72%,respectively with addition of 5 mg/L CMC.As a result,the efficient separation of apatite against dolomite was achieved.The adsorption of sodium oleate on the surface of apatite and dolomite was a physical process.CMC was connected with Mg2+ on the surface of dolomite like a"bridge",and hindered the adsorption of sodium oleate on the surface of dolomite.The ability of CMC to hinder the adsorption of sodium oleate on the surface of apatite was extremely limited,so CMC would not influence the flotation of apatite.The Zeta potential results indicated that the surface potential of apatite had a slight negative shift with the increase of CMC concentration,while that of dolomite had a significantly negative shift,indicating that CMC can prevent the adsorption of sodium oleate on the surface of dolomite,but cannot prevent the adsorption of sodium oleate on the surface of apatite.关键词
磷灰石/白云石/浮选/CMC/抑制Key words
apatite/dolomite/flotation separation/carboxymethyl cellulose/depression分类
矿业与冶金引用本文复制引用
范宛惠,姬志杰,杨帆,周峰,张汉泉..羧甲基纤维素对磷灰石与白云石浮选分离的影响及机理研究[J].矿产保护与利用,2024,44(1):61-66,6.基金项目
国家自然科学基金项目(51374156) （51374156）
武汉工程大学第十四届研究生教育创新基金资助项目(CX2022574) （CX2022574）
