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HomeIndustrial ManufacturingServices Related to Production & ProductsMetallurgy & Process DesignUnit Operations & MetallurgySolvent Extraction & Electrowinning
SX-EW (solvent extraction and electrowinning) are distinct metallurgical unit operations that recover high purity metal from leachate solutions. Solvent extraction is used to concentrate materials in an organic solution, while electrowinning is used to recover these pay elements. The two procedures are often conducted together. While electrowinning can be used with other processes, it is always used after solvent extraction.
Many elements can be extracted from aqueous metal-rich leachate solutions and concentrated into an organic solvent. The pay elements are then removed from the organic solution by electrowinning. The resulting high purity metal plate is then directly sold.
SGS has proven experience recovering a number of elements through SX-EW including:
SGS Solvent Extraction and Electrowinning services include:
SGS metallurgical experts can recover a wide range of metals from leach liquors and other solutions. Our bench testing capabilities that support flowsheet development or plant troubleshooting include:
SGS custom designs pilot plants to prove flowsheets. We provide pilot design and testing services.
Our solvent extraction equipment includes mixer-settlers, columns, contactors, coalescers, reciprocating plates and contacting units. As well, we have electrowinning cells, power supplies and electrode materials for use as stand-alone electrowinning units or with SX or similar circuits. Our cells can be equipped with temperature control and electrolyte recirculation systems when necessary.
SGS provides a number of other services for the ongoing support of SX-EW including:
Solvent extraction and electrowinning are industry-proven metal recovery unit operations that SGS can include in metallurgical flowsheets. They typically generate LME-grade metal products that can be sold directly to the market. SX-EW flowsheets designed and tested by SGS improve cash flow and ensure safe, compliant plant operations.