富铼渣浸出工艺改进试验研究  

Experimental research on improvement of leaching process of rich rhenium slag

作　　者：邵传兵[1,2] 腾志功 鲁兴武 汪友元[1,2] 余江鸿 王长征[1,2] SHAO Chuan-bing;TENG Zhi-gong;LU Xing-wu;WANG You-yuan;YU Jiang-hong;WANG Chang-zheng

机构地区：[1]西北矿冶研究院冶金新材料研究所,甘肃白银730900 [2]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 [3]白银有色集团股份公司铜业公司,甘肃白银730900

出　　处：《中国有色冶金》2021年第3期91-94,共4页China Nonferrous Metallurgy

摘　　要：针对某铜业公司铼酸铵回收系统铼浸出率不高及产品铼酸铵品位较低的现实情况,将原有的高酸氧化浸出改为单一双氧水体系氧化浸出,采取实验室小型试验研究方式,进行富铼渣浸出工艺改进试验研究。试验结果表明:在双氧水用量400 m L/100 g渣、时间120 min、浸出温度70℃条件下,浸出液中铼的浓度可达1 988 mg/L,相较原有生产工艺,铼浸出率得到大幅提高,平均达到90%以上;同时杂质铋、砷的浓度分别从110~150 mg/L和260~400 mg/L下降到33.62 mg/L和14.35 mg/L,杂质浸出明显降低。In view of the fact that the rhenium leaching rate of the ammonium rhenate recovery system is not high and the product ammonium rhenate grade is low,a copper industry company adopts a small-scale laboratory research method to conduct an experimental study on the improvement of the leaching process of the rich rhenium slag,in which,the original high acid oxidation leaching was changed to a single hydrogen peroxide system oxidation leaching. The results show that the concentration of rhenium in the leaching solution can reach 1 988 mg/L under the conditions of 400 m L/100 g slag,reaction time 120 min and leaching temperature of 70 ℃.Compared with the original production process,the leaching rate of rhenium is greatly improved,reaching an average of over 90%. At the same time,the impurity concentrations of bismuth and arsenic decreased from 110 ~ 150 mg/L and 260 ~ 400 mg/L to 33. 62 mg/L and 14. 35 mg/L,respectively,and the leaching of impurities was significantly reduced.

关 键 词：污酸硫化沉淀 含铼高砷高铜硫化渣 铼酸铵 铼浸出率 双氧水浸出 过硫酸钠高酸浸出 杂质浸出率 有害元素铋、砷 

分 类 号：TF841.8[冶金工程—有色金属冶金] TF811