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。
The gold grade of a certain gold deposit in Qinghai is 2.67 g/t,with exposed and semi-exposed gold accounting for 84.27%.Based on ore characteristics,whole ore leaching,flotation‑flotation tailings leaching,and gravity separation‑gravity separation tailings leaching were tested comparatively.After comprehensive evaluation of environmental and economic benefits,the gravity separation‑gravity separation tailings leaching combined process was selected as optimal.The raw ore was subjected to Nelson gravity separation,yielding a gold concentrate with a grade of 139 g/t and a gold recovery rate of 57.74%.Direct leaching of gravity separation tailings achieved a gold leaching rate of 37.13%on the raw ore.The total gold recovery of the entire process reached 94.87%,indicating favorable beneficiation performance.
作者
张国存
刘玉川
熊馨
陈攀
应永朋
张鑫宇
Zhang Guocun;Liu Yuchuan;Xiong Xin;Chen Pan;Ying Yongpeng;Zhang Xinyu(Qinghai Provincial Geological Resources Testing and Application Center)
出处
《黄金》
2025年第8期49-54,80,共7页
Gold
基金
青海省科协中青年科技人才托举工程项目(2023QHSKXRCTJ127)。
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
whole ore leaching
environmentally friendly gold leaching agent
flotation
Nelson gravity separation
combined process
total recovery
