以锑金精矿与铅精矿为研究对象,采用热力学软件FactSage计算协同熔炼过程各金属硫化物反应趋势、Me-S-O系优势区图及物相平衡分配规律。热力学分析表明,控制适宜的氧分压和硫分压可实现协同熔炼过程处在Pb(l)+Sb(l)热力学稳定区域,协同...以锑金精矿与铅精矿为研究对象,采用热力学软件FactSage计算协同熔炼过程各金属硫化物反应趋势、Me-S-O系优势区图及物相平衡分配规律。热力学分析表明,控制适宜的氧分压和硫分压可实现协同熔炼过程处在Pb(l)+Sb(l)热力学稳定区域,协同熔炼过程Sb_(2)O_(5)与PbS发生交互反应生成金属Pb、Sb的趋势较大,有利于实现熔炼过程Sb的回收和Au的捕集。验证试验表明,在熔炼温度1200℃、CaO SiO_(2)=0.40、Fe SiO_(2)=1.05、富氧浓度90%的条件下,锑金精矿与铅精矿协同熔炼过程可顺利进行,合金中Pb、Sb收率均大于88%,渣中Pb、Sb含量均小于1%,合金中Au含量达78 g t。展开更多
文摘以锑金精矿与铅精矿为研究对象,采用热力学软件FactSage计算协同熔炼过程各金属硫化物反应趋势、Me-S-O系优势区图及物相平衡分配规律。热力学分析表明,控制适宜的氧分压和硫分压可实现协同熔炼过程处在Pb(l)+Sb(l)热力学稳定区域,协同熔炼过程Sb_(2)O_(5)与PbS发生交互反应生成金属Pb、Sb的趋势较大,有利于实现熔炼过程Sb的回收和Au的捕集。验证试验表明,在熔炼温度1200℃、CaO SiO_(2)=0.40、Fe SiO_(2)=1.05、富氧浓度90%的条件下,锑金精矿与铅精矿协同熔炼过程可顺利进行,合金中Pb、Sb收率均大于88%,渣中Pb、Sb含量均小于1%,合金中Au含量达78 g t。
基金the financial supports from the National Natural Science Foundation of China(Nos.51904351,U20A20273)the National Key R&D Program of China(No.2019YFC1907400)+1 种基金the Science and Technology Innovation Program of Hunan Province,China(No.2021RC3005)the Innovation Driven Project of Central South University,China(No.2020CX028)。
基金Project(2019YFC1907405)supported by the National Key R&D Program of ChinaProjects(52064021,52074136)supported by the National Natural Science Foundation of China+6 种基金Project(20204BCJL23031)supported by the Jiangxi Provincial Cultivation Program for Academic and Technical Leaders of Major Subjects,ChinaProject(20202ACB213002)supported by the Jiangxi Provincial Science Fund for Distinguished Young Scholars,ChinaProject(2019KY09)supported by the Merit-based Postdoctoral Research in Jiangxi Province,ChinaProject(JXUSTQJBJ2020004)supported by the Program of Qingjiang Excellent Young TalentsJiangxi University of Science and Technology,ChinaProject(2021ACB204015)supported by the Distinguished Professor Program of Jinggang Scholars in Institutions of Higher LearningNatural Science Foundation of Jiangxi Province,China。