废酸选择性沉铼试验研究

Study on Rhenium Selective Precipitation from Waste Acid

研究了选择性沉淀富集铜冶炼废酸中铼的可行性。结果表明,当沉铼剂添加量为4g/L,反应温度60℃,反应时间1h时,铜、铼、砷的沉淀率分别为99.10%、99.95%、6.43%,所得富铼渣中铼含量为2.3%。在此基础上,结合某铜冶炼企业实际的废酸处理情况进行了设备选型与效益分析。

studied. respectiv of 60 ℃, and bene smelter. Feasibility to enrich rhenium from copper pyrometallurgy waste acid by selective precipitation was The results show that precipitation rate of Cu, Re and As is 99. 10%, 99. 95% and 6. 43% ely under the optimum conditions including precipitant dosage of 4 g/L, precipitation temperature and precipitation duration of 1h. Re content in rhenium-rich slag is 2.3%. Equipment selection fit analysis are conducted based on the practical waste acid treatment process of one copper smelter.