六偏磷酸钠在菱锰矿与方解石表面的吸附行为  

Adsorption behavior of sodium hexametaphosphate on rhodochrosite and calcite surface

作　　者：罗娜 闫宝宝 时景阳 王晓平 LUO Na;YAN Baobao;SHI Jingyang;WANG Xiaoping(School ofMining and Coal,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;Inner Mongolia Key Laboratory of Mining Engineering,Baotou 014010,Inner Mongolia,China;Inner Mongolia Research Center for Coal Safety Mining and Utilization Engineering and Technology,Baotou 014010,Inner Mongolia,China;Inner Mongolia Cooperative Innovation Center for Coal Green Mining and Green Utilization,Baotou 014010,Inner Mongolia,China;Inner Mongolia Autonomous Region Industrial Technology Innovation Center Inner Mongolia Autonomous Region Science and Technology Testing and Experimental Center,Hohhot 010010,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古包头014010 [2]内蒙古自治区矿业工程重点实验室,内蒙古包头014010 [3]内蒙古自治区煤炭安全开采与利用工程技术研究中心,内蒙古包头014010 [4]内蒙古煤炭绿色开采与绿色利用协同创新中心,内蒙古包头014010 [5]内蒙古自治区产业技术创新中心(内蒙古自治区科学技术检测实验中心),呼和浩特010010

出　　处：《矿冶》2024年第1期34-38,45,共6页Mining And Metallurgy

基　　金：内蒙古自然科学基金资助项目(2019BS05021);内蒙古科技大学创新基金资助项目(2019QDL-B26,2019QDL-B28)。

摘　　要：用六偏磷酸钠为抑制剂,通过单矿物浮选试验、人工混合矿浮选试验、浮选溶液化学计算、分子动力学模拟、动电位测定研究菱锰矿和方解石的浮选行为以及六偏磷酸钠的作用机理。结果表明,采用六偏磷酸钠为抑制剂可以实现菱锰矿与方解石的浮选分离;六偏磷酸钠能够选择性抑制方解石的主要原因是六偏磷酸钠在溶液中主要以HPO_(4)^(2-)形式存在,HPO_(4)^(2-)会吸附在方解石表面从而抑制方解石的上浮,但在菱锰矿表面基本不发生吸附,不影响菱锰矿上浮,从而实现两种矿物的浮选分离。Using sodium hexametaphosphate as an inhibitor,the flotation behavior of rhodochrosite and calcite,as well as the mechanism of sodium hexametaphosphate,were studied through single mineral flotation experiments,artificial mixed ore flotation experiments,flotation solution chemical calculations,molecular dynamics simulations,and potentiodynamic measurements.The results indicate that using sodium hexametaphosphate as an inhibitor can achieve flotation separation of rhodochrosite and calcite.The main reason why sodium hexametaphosphate can selectively inhibit the flotation of calcite is that the main form of sodium hexametaphosphate in solution,HPO_(4)^(2-),will adsorb on the surface of calcite,thereby inhibiting its flotation.However,there is basically no adsorption on the surface of rhodochrosite,which does not affect its flotation,thus achieving flotation separation of the two minerals.

关 键 词：六偏磷酸钠 菱锰矿 方解石 吸附行为 

分 类 号：TD923[矿业工程—选矿] TD951