中国科技核心期刊
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青海某金矿选矿试验对比研究
- 作者：
张国存，刘玉川，熊馨，陈攀，应永朋*，张鑫宇
- 作者单位：
- （青海省地质矿产测试应用中心）
基金项目：
- 青海省科协中青年科技人才托举工程项目（2023QHSKXRCTJ127）
详细信息：
- 作者简介：
- 张国存（1982—），男，工程师，从事选冶试验研究工作；E⁃mail：25969742@qq. com
- 通讯作者：
- 应永朋（1991—），男，高级工程师，从事工艺矿物学研究及矿物加工研究工作；E‑mail：693109223@qq. com
- PDF下载
Comparative study on beneficiation test of a gold mine in Qinghai
- English Author：
Zhang Guocun, Liu Yuchuan, Xiong Xin, Chen Pan, Ying Yongpeng, Zhang Xinyu
- Unit：
- （Qinghai Provincial Geological Resources Testing and Application Center）
- 摘要
- 在线预览
- 参考文献
摘要:
青海某金矿金品位 2.67 g/t，裸露及半裸露金占比 84.27 %。根据矿石性质，选择全泥浸出、浮选—浮尾浸出、重选—重尾浸出等工艺流程进行对比试验研究。综合考虑环境效益及经济效益，最终选择重选—重尾浸出联合工艺，原矿经过尼尔森重选流程，获得的金精矿金品位为139 g/t，金回收率为 57.74 %；重尾直接浸出，对原矿金浸出率为 37.13 %；全流程金总回收率为94.87 %，选别指标较好。
关键词:
全泥浸出；环保浸金剂；浮选；尼尔森重选；联合工艺；总回收率
Abstract:
The Xiaoqinling Gold Field is one of the major gold mineralization clusters in China. The S60 vein, atypical representative of large⁃scale gold veins in the area, plays a decisive role in the regional mineral distribution.Investigating the characteristics and ore⁃controlling effect of the ore⁃controlling fault is of great significance. Using 3Dgeological modeling technology, this study examines the morphology, orientation, evolutionary stages, and metallogenicpatterns of the ore⁃controlling fault in the S60 vein. Results show that the fault trends NWW and has experienced multiplestages of activity, including ductile, brittle⁃ductile, and brittle deformation. The fault displays a gently undulating geometryalong strike and shows systematic variations in dip direction. These regular structural changes are closely related toorebody occurrence, with the main orebody mainly hosted in segments with dip angles ranging from 30° to 46° . Theore⁃controlling mechanism is closely linked to the migration and precipitation of ore⁃forming materials. Tensile structuralplanes facilitated the migration and accumulation of ore⁃bearing fluids, ultimately leading to mineral enrichment. Themulti⁃stage deformation of the ore⁃controlling fault had varying impacts on the formation and preservation of the S60vein. This study provides critical insights for understanding the metallogenic mechanism and evolutionary process ofthe Xiaoqinling Gold Field and offers guidance for deep ore prospecting breakthroughs.
Keywords:
whole ore leaching; environmentally friendly gold leaching agent; flotation; Nelson gravity separation;combined process; total recovery
