摘要
稀散金属锗、铟是重要的战略资源,常伴生在铅锌矿或煤中,主要从锌冶炼渣或煤燃烧后的烟尘中提取。云南某铅锌矿冶炼厂的高硅炼锌渣中锗、铟含量分别为126.00、358.00 g/t,Si O_2含量为24.62%,为高效低耗浸出其中的锗、铟,以硫酸溶液为浸出剂进行了浸出工艺条件研究。结果表明:在磨矿细度为-0.074 mm占81%、硫酸溶液的浓度为110 g/L、液固比为3、搅拌强度为350 r/min、浸出温度为70℃、浸出时间为4 h情况下,试样中锗、铟的浸出率分别达87.90和89.88%。
Rare metals germanium and indium are important strategic resources,they are commonly associated with leadzinc ore or coal,and mainly extracted from zinc smelter slag and ash of burning coal. The content of germanium,indium and Si O2 is 126. 00 g/t,358. 00 g/t and 24. 62% in zinc smelting slag with high silicon from a lead-zinc smelter in Yunnan. In order to high efficiently leaching the germanium and indium,acid-leaching technology was research. Results showed that the leaching rate of germanium and indium can reach 87. 90% and 89. 88% under the optimal conditions of grinding fineness of 81%-0. 074 mm,sulfuric acid concentration 110 g/L,liquid-solid ratio of 3,stirring speed of 350 r/min,leaching temperature of 70℃,leaching time of 4 h.
出处
《金属矿山》
CAS
北大核心
2016年第7期189-192,共4页
Metal Mine
关键词
炼锌渣
硫酸浸出
锗铟浸出率
Zinc smelting slag
Sulfuric acid leaching
Leaching rate of germanium and indium
