复杂高含铟物料铟浸出工艺研究

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0.3...

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

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.