Patent Number: 8,871,001

Title: Method for leaching zinc from a zinc ore

Abstract: A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300.degree. C. and about 900.degree. C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a zinc recovery step.

Inventors: Sutcliffe; Matthew Leslie (London, GB), Johnston; Garry Mervyn (Claremont, AU), Welham; Nicholas James (Ballarat, AU)

Assignee: Metaleach Limited

International Classification: C22B 19/20 (20060101)

Expiration Date: 2018-10-28 0:00:00