MINERAL PROCESSING

摘要

A process for producing a metal oxide product, which process includes providing a metal-containing material; and a leaching composition including a source of ammonium ions; a source of carbonate ions; and water; contacting the metal-containing material with the leaching composition to form an aqueous slurry for a time sufficient such that a metal complex is produced; subjecting the metal-containing material to a size reduction step prior to, or simultaneously with, the leaching step such that the average diameter of the particles is below approximately 100 microns; and isolating a leaching solution containing the metal complex so formed.