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[an error occurred while processing this directive]Experimental Study on the Comprehensive Recovery of Gold,Tungsten and Quartz Sand Form Flotation Tailings of Dulanggou Gold Mine in Sichuan Province
Received date: 2022-07-19
Revised date: 2023-06-08
Online published: 2024-01-26
The flotation tailings came from Dulanggou gold mine in Sichuan Province,with the particle size of -0.074 mm 27%.The results of chemical analysis show that the grade of Au,WO3 and SiO2 is 0.42×10-6, 0.039%,and 94.01% respectively.The main valuable metal minerals are natural gold,scheelite and pyrite,and the gangue minerals are mainly quartz,mica and feldspar,which belong to the tailings that can be recycled. In order to comprehensively recover the valuable minerals in the flotation tailings of Dulanggou gold mine,according to the density difference between natural gold and gold-bearing minerals(pyrite) and scheelite in the tailings,without grinding,the gravity separation test equipment and process selection,gold-tungsten separation flotation test and beneficiation test of quartz sand recovery from gravity tailings were carried out.Finally,through detailed comparative analysis,the combined process of gravity separation (Nielsen+shaking table)-flotation (gold tungsten separation)-magnetic separation was adopted.The flotation process has got a better classification index.The gold concentrate Au grade is 107.00×10-6 and Au recovery is 2.34%.Tungsten concentrate(WO3 grade) is 52.95% and WO3 recovery is 47.23%.Quartz sand concentrate(SiO2 grade) is 96.32% and SiO2 recovery is 75.68%,and the quartz sand concentrate reaches 2S level.The tailings bene-ficiation process has the advantages of low cost,easy on-site operation and environmental protection.
Rongyan ZHAO , Tian’en LI , Ling ZHANG . Experimental Study on the Comprehensive Recovery of Gold,Tungsten and Quartz Sand Form Flotation Tailings of Dulanggou Gold Mine in Sichuan Province[J]. Gold Science and Technology, 2023 , 31(6) : 1035 -1043 . DOI: 10.11872/j.issn.1005-2518.2023.06.095
稀有稀土稀贵战略性矿产研究团队荣获“全国自然资源系统先进集体”称号
近期,“全国自然资源系统先进集体和先进个人表彰会议”在京举行,中国地质科学院矿产资源研究所稀有稀土稀贵战略性矿产研究团队荣获“全国自然资源系统先进集体”称号。
团队以“全力支撑三稀和贵金属矿产资源安全保障,精心服务自然资源中心工作”为基本定位,以“找大矿、找好矿,好找矿”为目标,在自然资源部、中国地质调查局统一部署和中国地质科学院矿产资源研究所党委坚强领导下,在理论创新、找矿实践、服务矿政管理、促进成果转化、党建促业务等方面取得了一批重大成果。近5年共承担国家重点研发项目3项、自然科学基金项目4项,组织实施地质调查工程3项、二级项目3项,科技成果转化项目12项,获“自然资源部高层次科技创新人才工程科技创新团队”等各种奖励10项,培养硕士、博士及博士后62名,先后在新疆阿尔金、四川马尔康、攀西、江西赣南等地实现新的找矿突破,发现超大型锂矿床1处,提交钨、铜、锂、铍等勘查靶区多处,实现了从传统的基础理论研究向成矿理论与找矿实践紧密结合的转型发展,为矿政管理提供了科技支撑,为我国战略性新兴产业的发展提供了资源保障。
中国地质科学院矿产资源研究所)
http://www.goldsci.ac.cn/article/2023/1005-2518/1005-2518-2023-31-6-1035.shtml
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