HYDROMETALLURGICAL RECOVERY OF METAL VALUES

摘要

In the hydrometallurgical recovery of metal values from ores and the like in which a metal bearing source is reduced in the presence of at least one additive at temperatures ranging from about 500.degree. to about 900.degree. C. and thereafter extracted, the improvement which comprises pretreating only a portion of the feed stock with the additive prior to the reducing roast.