Method for recovering gold or silver comprises leaching out a gold or silver ore using a cyanide alkaline solution, filtering the solution to remove the leached ore, treating the filtrate using elemental zinc and further processing

摘要

Method for recovering gold or silver comprises leaching out a gold or silver ore using a cyanide alkaline solution to produce a first aqueous solution, filtering the solution to remove the leached ore, treating the filtrate using elemental zinc to produce a second aqueous solution containing finely dispersed metallic gold or silver and filtering the second aqueous solution to remove the metallic gold or silver using a fibrous organic filtering aid.