The extraction of metallic indium is a common operation unit in the field of hydrometallurgy, and there are many extraction methods. A large number of case data and experiments have shown that the use of solvent extraction method to extract metallic indium is effective. When used with the CWL-M series centrifugal extractor, the extraction effect is greatly improved. Here is a detailed introduction to the extraction of metallic indium by solvent extraction.

Solvent extraction method is a liquid-liquid extraction method that uses an extractant to extract metal elements. Solvent extraction method is a mature technology in hydrometallurgy and has a high recovery rate for dilute metal solutions.

The process of extracting metallic indium by solvent extraction

At present, the extraction process of metallic indium is extraction-electrolysis.

Indium containing raw materials → enrichment → chemical dissolution → purification → extraction → stripping → zinc (aluminum) replacement → sponge indium → electrolytic refining → refined indium

In order to simplify the process and reduce costs, a new extraction process has been developed through experiments based on the above process. The new process flow is: electrolysis → extraction → stripping → neutralization → replacement → melting → crude indium.

Metallic indium extraction equipment

Zhengzhou Tiei Extraction CWL centrifugal extractor is used in conjunction with solvent extraction to extract indium. Commonly used organic solvents include P204, which has good selectivity for indium and can extract indium from mixed solutions with very low indium content. The recovery rate is as high as 96% to 99%.

Zhengzhou Tiei Extraction Company mainly deals with the extraction section, that is, the extraction and stripping process. The equipment used in the extraction section is the CWL-M centrifugal extractor, which is selected according to the processing volume of the feed liquid per hour, the difficulty of extraction, the required extraction accuracy and other conditions. If a higher extraction rate is required, more stages are required, and multi-stage continuous extraction or multi-stage countercurrent extraction is required to achieve the ideal effect.

If you want to know more about hydrometallurgical extraction methods and equipment, welcome contact Zhengzhou Tiei Extraction.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820