中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
刘朝兴|胡泽伟|何东|宋强|谢贤
Liu Chaoxing, Hu Zewei, He Dong, Song Qiang, Xie Xian
随着易选金矿资源的逐渐匮乏,开发处理低品位、含硫含砷复杂金矿的高效工艺尤为关键。针对秘鲁某复杂金矿进行工艺矿物学分析,并对全浸和浸出一浮选联合工艺的处理效果进行了比较。研究结果显示:该矿石金品位为6.64 g/t,其中51.9%的金被矿物包裹,主要载金矿物为黄铁矿和石英。在优化工艺条件下,全浸法的Au浸出率可达74.1%,浸出渣中残留Au品位为1.72 g/t,说明回收效果有待提升。通过对浸出渣进行浮选处理,闭路试验获得的金精矿Au品位达到21.60 g/t,Au回收率为14.47%。采用浸出一浮选联合工艺,Au总回收率提高至88.57%,显示出该工艺在处理复杂金矿方面的显著优势。研究结果为复杂金矿的开发提供了有效的技术参考。
As easily processed gold ore resources become increasingly scarce,developing efficient processes for low-grade,sulfur and arsenic-bearing complex gold ores is critical. This study focuses on the process mineralogy of a complex gold ore in Peru and compares the treatment effects of total leaching and a combined leaching-flotation process. Results show that the gold grade of the ore is 6.64 g/t,with 51.9 % of the gold encapsulated in minerals,primarily hosted by pyrite and quartz. Under optimized conditions,the gold leaching rate via full cyanidation reached 74.1 %,with a residual gold grade of 1.72 g/t in the leach residue,indicating room for recovery improvement. By subjecting the leach residue to flotation,closed-circuit tests achieved a gold concentrate grade of 21.60 g/t and a gold recovery of 14.47 %. The combined leaching-flotation process increased the total gold recovery to 88.57 %,demonstrating significant advantages for processing complex gold ores. These findings provide an effective technical reference for future complex gold ore development.