化工矿物与加工2026，Vol.55Issue(5)：1-8,8.DOI:10.16283/j.cnki.hgkwyjg.2026.05.001
基于旋流分级-浮选联合工艺的某细粒嵌布低品位金矿回收试验研究
Experimental study on the recovery of a fine-grained disseminated low-grade gold ore based on the combined process of cyclone classification and flotation
梁中堂 1孙代馨 2周仕娇 2谢贤 2陈杰江 2芦元廷2
作者信息
- 1. 湖南中工矿业工程技术有限公司,湖南 长沙 410205
- 2. 昆明理工大学 国土资源工程学院,云南 昆明 650093||金属矿尾矿资源绿色综合利用国家地方联合工程研究中心,云南 昆明 650093
- 折叠
摘要
Abstract
As a precious metal,gold is an important strategic material of the country.China's gold resources are characterized by large ore,small scale,low grade and dispersion.The high-grade easy-to-handle ore is decreasing day by day.Low-grade and difficult-to-handle gold resources have become the focus and difficulty of development and utili-zation.In view of a fine-grained disseminated low-grade gold mine in Gansu Province,chemical multi-element analysis,gold phase analysis and particle size composition analysis were carried out.On the basis of identifying the ore properties,high selective activator HL-1 and high-efficiency composite collector Y-89 were selected to carry out flota-tion test research.The results show that the grade of Au in the raw ore is 1.44 g/t,and the grade of Ag is 7.66 g/t,which can be comprehensively recovered as an associated beneficial component.Gold is mainly wrapped by sulfide,and the grade and distribution rate of Au in+0.075 mm and-0.023 mm are low.The coarse fraction of 31.79%and the fine fraction of 23.34%can be removed by the cyclone,and only 7.79%of Au is lost,and Au has a certain enrich-ment effect.The closed-circuit process of'one roughing,three cleaning and one scavenging'was adopted,and the middle ore was returned to the previous operation in sequence.Finally,the gold concentrate with Au grade of 74.12 g/t,Au operation recovery rate of 91.29%,Au comprehensive recovery rate of 84.18%,Ag grade of 245.89 g/t,Ag operation recovery rate of 79.22%and Ag comprehensive recovery rate of 65.25%was obtained,and the synergistic recovery of associated silver was realized.The heavy-floating combined process of'cyclone decoarsening-cyclone des-liming-flotation gold recovery'reduces the cost of gold leaching and improves the comprehensive benefits,which can provide technical reference for the efficient development of fine-grained disseminated low-grade gold deposits.关键词
低品位金矿/脱泥/浮选/重-浮联合工艺/旋流器/协同回收Key words
low grade gold/desliming/flotation/gravity concentration and flotation combined process/cyclone/col-laborative recycling分类
矿业与冶金引用本文复制引用
梁中堂,孙代馨,周仕娇,谢贤,陈杰江,芦元廷..基于旋流分级-浮选联合工艺的某细粒嵌布低品位金矿回收试验研究[J].化工矿物与加工,2026,55(5):1-8,8.
