Abstract: Battery grade metal sulfate solutions can be prepared directly from electrolytically produced metal objects, such as cathode plates, when these are subjected to an aqueous leaching solution comprising at least one acid leaching agent and a liquid oxidizing agent in a continuous process at elevated temperature and with vigorous mixing. A leaching arrangement comprising a leaching column or reaction vessel is also disclosed.

Abstract: The present disclosure provides a method for separating manganese in leaching of cobalt and/or nickel from delithiated solid raw material, the method comprising providing delithiated solid raw material comprising cobalt and/or nickel, providing5 acidic solution, combining the delithiated solid raw material with the acidic solution, allowing cobalt and/or nickel in the delithiated solid raw material to leach to obtain a leach solution comprising cobalt and/or nickel, providing manganese in the leach solution as the only reducing agent, and allowing the manganese to precipitate as manganese dioxide while the cobalt and/or nickel are dissolved. The present0 disclosure also provides use of delithiated solid raw material comprising cathode material in the method.

Abstract: Battery grade metal sulfate solutions can be prepared directly from electrolytically produced metal objects, such as cathode plates, when these are subjected to an aqueous leaching solution comprising at least one acid leaching agent and a liquid oxidizing agent in a continuous process at elevated temperature and with vigorous mixing. A leaching arrangement comprising a leaching column or reaction vessel is also disclosed.