摘要
为促进尾矿综合回收利用,化解尾矿地表堆存难题,实现“无尾矿山”,以山东某金矿为工程背景,测试分析尾矿矿物组成、粒级分布,确定长石矿物提取与细粒尾矿充填协同处理技术路线。开展尾矿再选试验与再选流程设计,细筛分级、强磁选除杂可得到白度54.15%、Fe_(2)O_(3)含量0.212%的高质量长石精矿,预期产生经济效益5800万元。试验研究细粒尾矿充填配比对其强度、胶凝时间影响规律,优选确定P·O42.5水泥、63%浓度、不小于1:8灰砂比充填配比方案,提出添加减水剂、研究膏体充填工艺等方法提高充填浓度。研究结论可为相似金矿尾矿综合回收利用及充填设计提供参考。
To promote the comprehensive recovery and utilization of tailings,resolve the challenges associated with surface storage of tailings,and achieve the goal of a"tailings-free mine,"this study,set against the backdrop of a gold mine in Shandong,examines and analyzes the mineral composition and particle size distribution of tailings.It establishes a collaborative processing technique route for the extraction of feldspar minerals and the filling of fine tailings.Through the undertaking of tailings re-selection experiments and the design of re-selection processes,a high-quality feldspar concentrate with a whiteness of 54.15%and an Fe_(2)O_(3) content of 0.212%was obtained through fine screening and strong magnetic separation for impurity removal,with an anticipated economic benefit of 58 million yuan.The study investigates the influence of the fine tailings filling ratio on its strength and setting time,optimally selecting a filling ratio scheme of P·O42.5 cement,a concentration of 63%,and a minimum ash-to-sand ratio of 1∶8.It proposes the addition of water-reducing agents and the study of paste filling processes as methods to increase the filling concentration.The conclusions of this research may serve as a reference for the comprehensive recovery and utilization of tailings and filling design for similar gold mines.
作者
杜久华
梁超
刘霞
张峥
王昆
陈志翔
DU Jiu-Hua;LIANG Chao;LIU Xia;ZHANG Zheng;WANG Kun;CHEN Zhi-xiang(Zhongkuang Gold Industry Co.,Ltd.,Yantai 265400,China;Shandong Jindu Smelting Co.,Ltd.,Yantai 265400,China;College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Promotion Center for Scientific and Technical Service Development of Shandong Province,Jinan 250101,China)
出处
《有色矿冶》
2024年第2期59-62,58,共5页
Non-Ferrous Mining and Metallurgy
关键词
尾矿综合利用
长石
金矿
细粒充填
尾矿资源化利用
tailings comprehensive utilization
feldspar
gold mine
fine-grained filling
resource utilization of tailings
作者简介
杜久华(1989—),男,研究生学历,采矿工程师,主要从事井建及采矿工艺研究;通讯作者:王昆(1991—),男,博士,讲师,主要从事尾矿处置与矿山安全方面研究工作。Email:kwang@sdust.edu.cn。
