复杂高含铟物料铟浸出工艺研究  

Research on the indium leaching process of complex high-indium materials

作　　者：彭情亮 王日 胡意文 张旭泳 PENG Qing-liang;WANG Ri;HU Yi-wen;ZHANG Xu-yong

机构地区：[1]江西铜业技术研究院有限公司,江西南昌330096

出　　处：《中国有色冶金》2021年第1期32-36,48,共6页China Nonferrous Metallurgy

摘　　要：某铅冶炼厂的复杂高含铟物料为冶炼的中间产物,此物料采用常规酸浸工艺铟的浸出率较低。针对此问题,本文采用盐酸-硫酸混酸浸出、加压酸浸法、硫酸化焙烧-低酸浸出等3种工艺对此复杂高含铟物料进行了试验,在各试验的较佳工艺条件下,试验结果为:采用盐酸-硫酸混酸浸出工艺,铟的浸出率可以达到75.87%,浸出渣铟含量可以降低至0.32%;采用加压酸性浸出工艺,铟的浸出率可以达到82.54%,浸出渣铟含量可降低至0.21%;采用硫酸化焙烧-低酸浸出工艺,铟的浸出率可以达到93.28%,浸出渣铟含量可降低至0.09%。综合分析对比3种铟的浸出工艺,"硫酸化焙烧-低酸浸出"工艺比较适合此复杂含铟物料提铟。The complex high-indium material from a lead smelter is an intermediate product of smelting,and the leaching rate is lowbyusingconventional acid leaching process.In response to this problem,this paper used three processes,such as hydrochloric acid-sulfuric acid mixed leaching,pressurized acid leaching,sulfating roasting-low acid leaching,to test this complex high-indium material.Under the optimal process conditions of each test,the results are as follows.Using the hydrochloric acid-sulfuric acid mixed acid leaching process,the leaching rate of indium can reach 75.87%,and the indium content of the leaching residue can be reduced to 0.32%;using the pressure acid leaching process,the leaching rate of indium can reach 82.54%,and the indium content of the leaching residue can be reduced to 0.21%;using sulfuric acid roasting-low acid leaching process,the leaching rate of indium can reach 93.28%,and the indium content of the leaching residue can be reduced to 0.09%.Though comparison of these three indium leaching processes,the"sulfating roasting-low acid leaching"process is more suitable for extracting indium from this complex indium-containing material.

关 键 词：复杂高含铟物料 铟浸出率 盐酸-硫酸混酸浸出 加压酸浸法 硫酸化焙烧-低酸浸出 

分 类 号：TF843.1[冶金工程—有色金属冶金] TF812