某金矿提金工艺改造及生产实践
Experimental study on gold recovery process renovation and production practice in a gold mine
吴志国 1王红星 1于鸿宾2
作者信息
- 1. 黔西南金龙黄金矿业有限责任公司
- 2. 长春黄金研究院有限公司
- 折叠
摘要
针对贵州某微细粒浸染型含泥氧化金矿堆浸过程中金浸出速率慢和金浸出率低的问题,对现场生产工艺进行了优化.在矿石工艺矿物学研究和堆浸提金条件试验基础上,结合现场生产实际,诊断出制约堆浸过程提金困难的主要原因是矿石中金矿物大多以微细粒形式存在、矿物单体解离度差、易泥化矿物含量高、矿堆渗透性较差、浸液pH和氰化物质量分数较低、喷淋强度较大等.针对生产过程中存在的问题,采取相应优化措施,经现场改造后,金浸出率由 35%提高至57%,达到预期优化效果,为企业带来显著经济效益.
Abstract
In response to the slow gold leaching rate and low gold leaching rate during the heap leaching process of a fine-grained dissemination,slimy,oxidized gold ore in Guizhou,the on-site production process was optimized.Based on ore process mineralogy research and heap condition experiments,combined with the actual production on-site,the main reasons hindering the gold recovery during the heap leaching process were diagnosed.These included the presence of gold minerals in fine particle form,low dissociation degree of mineral monomers,high content of easily sliming minerals,poor permeability of ore heaps,low pH value and cyanide mass fraction in leaching solution,and high spray intensity.Corresponding optimization measures were formulated to address the problems in the production process.After on-site renovations,the gold leaching rate increased from 35%to 57%,achieving the expected optimi-zation effect and providing significant economic benefits for the company.
关键词
微细粒/氧化型金矿/堆浸/渗透性/含泥Key words
fine-grained/oxidized gold ore/heap leaching/permeability/slimy引用本文复制引用
出版年
2024
NETL
NSTL
万方数据