A METHOD OF RECOVERING ONE OR MORE METAL SPECIES

The present invention relates to a method of recovering one or more metal species from a raw material, such as waste lithium-ion battery material comprising: providing a molten salt comprising at least one metal hydroxide, providing one or more oxoacidity agents, preferably as a reservoir of one or more oxoacidity agents being in communication with the molten salt, setting the oxoacidity of the molten salt with the one or more oxoacidity agents to an oxoacidity value to dissolve at least one metal species in the molten salt, contacting the raw material with the molten salt, performing at least one of the steps b) and c): b) setting an electrical potential of the molten salt to recover a first metal species to a first metal or first metal oxide, c) adjusting the oxoacidity of the molten salt with the one or more oxoacidity agents to precipitate a first metal oxide, d) optionally performing, for one or more further metal species, the method step a) and/or performing at least one of the method steps b) and c).