Indium and Acid recovery method of Indium-containing spent etchant using the solvent extraction method

摘要

The present invention relates to a method for recovering indium and an acid by solvent extraction from a waste etchant containing indium, and more particularly, to a method for recovering indium and an acid by extraction of a solvent from an etchant and other process sludge containing indium, In this process, the metal wastewater is recovered efficiently, and the acid wastewater generated in this process can be purified and reused as an etchant, thereby recycling the resources and utilizing the solvent extraction. In addition, it is possible to increase the recovery rate of indium due to the efficient efficiency of the simple extraction process, thereby contributing to the recyclability of rare metals. In addition, since the produced acid wastewater is purified and recovered for recycling, Can be reduced and manufacturing cost of the transparent electrode can be reduced, and indium It from the etchant waste Co., relates to a method for recovering indium and acid by solvent extraction.