低品位氧化铜原矿槽浸提铜工艺试验研究
Experimental Study on the Process of Extracting Copper from Low Grade Copper Oxide Ore by Tank
李俞良 1殷勤生 2王宏伟 1刘瑛鑫 1何乃勇 1牛振华1
作者信息
- 1. 西北矿冶研究院 甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室,甘肃 白银 730900
- 2. 白银有色集团股份有限公司,甘肃 白银 730900
- 折叠
摘要
试验采用原矿二级破碎-浓酸熟化-槽浸的流程,原矿破碎至粒径为 5～10 mm后进行浓硫酸熟化,将熟化矿样直接用于浸出试验,在初始H2SO4浓度为 100 g/L,液固比为 1.5:1,常温的条件下浸出 24 h,Cu浸出率达到90%,浸出渣经水洗后洗液返回槽浸工序循环使用,Cu浸出率达到93%以上.槽浸浸出液即为CuSO4 溶液,可通过常规萃取-电解工艺得到最终产品阴极铜.试验结果表明:采用此工艺流程处理低品位氧化铜矿,Cu回收率达到93%以上.
Abstract
The process flow of secondary crushing of raw ore,concentrated acid curing and tank leaching was adopted in the experiment.After the raw ore is broken to a particle size of 5～10 mm,it is cured with concentrated sulfuric acid.The cured ore sample is directly used in the leaching test.When the initial H2SO4 concentration is 100 g/L,the liquid-solid ratio is 1.5∶1,and leaching temperature at normal temperature,the leaching rate of Cu reached 90%after leaching for 24 h.After the leaching residue was washed,the liquid was returned to the tank for recycling,and the leaching rate of Cu reached more than 93%.The bath leaching solution is copper sulfate solution,and the final product cathodic copper can be obtained by conventional extraction-electrolysis process.The experimental results show that the Cu recovery rate of low grade copper oxide treated by this process is more than 93%.
关键词
低品位氧化铜原矿/浓酸熟化/槽浸/浸出剂/起始酸度Key words
low grade copper oxide ore/concentrated acid curing/bath leaching/leaching agent/initial acidity引用本文复制引用
基金项目
甘肃省科技重大专项(21ZD4GD033)
出版年
2024
NETL
NSTL
万方数据