摘要
为深入研究氧化锌矿元素硫水热硫化机理,本文以锌的重要硅酸盐类矿物-异极矿为研究对象,元素硫为硫化剂开展了纯异极矿水热硫化及矿相转变规律研究.在水热体系中合成的异极矿经XRD检测结果表明,合成矿物的纯度高,结晶度好.增大搅拌转速、提高转化温度、增加硫磺用量、缩小颗粒粒度均可显著提高异极矿的硫化转化率.在160℃下异极矿经水热硫化转化90min后有硫化锌生成,其XRD衍射峰随温度的升高而加强.在220℃下转化240 min后异极矿水热硫化过程已基本完成.
Hemimorphite is chosen for this investigation because it is one of the most commercially important zinc silicate minerals for the extraction of zinc. The hydrothermal sulfidation behavior of synthetic hemimorphite, u- sing elemental sulfur as sulfidant, is studied in the present study systematically to know the hydrothermal sulfida- tion mechanism of zinc oxide ore better. The XRD results show that the hemimorphite synthetized under hydro- thermal condition is in good quality with high degree of crystallinity. The sulfidation rate of synthetic hemimor- phite would be raised by increasing of agitation speed, temperature, sulfur dosage, and decreasing of mineral particle size. The sample is only partially reacted at 160℃ and 30 minutes of reaction,and diffraction lines for zinc sulfide is strengthened with increasing in temperature. The sulfidation reaction is mostly completed at 220℃ for 240 rain.
出处
《昆明理工大学学报（自然科学版）》
CAS
北大核心
2014年第5期1-5,共5页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(50904030,51364022,51474117)
国家重点基础研究发展计划(973计划)项目(2014CB643404)
云南省教育厅科学研究基金重大专项项目(ZD2014003)
关键词
异极矿
水热硫化
硫化率
矿相转变
硫化锌
hemimorphite
hydrothermal sulfidation
sulfidation rate
phase transition
zinc sulfide
