The CESL Processes

CESL has developed hydrometallurgical processes for:

• the production of copper and nickel cathode from their respective concentrates
• the economical recovery of gold and silver from the residues
• the removal of copper from molybdenum concentrates

The CESL Processes use proven technologies such as pressure oxidation, solvent extraction and electrowinning but combines them in a novel way. The closed-loop process produces no liquid effluents or sulphur dioxide and the only solids produced are gypsum and a leach residue that can be disposed of with associated mill tailings.

The CESL Processes are applicable to a wide variety of base metal sulphide concentrates and can process bulk, lower grade, or impurity-challenged concentrates which may otherwise incur additional smelting costs.