PROCESS FOR RECOVERING METAL VALUES FROM OXIDES OF MANGANESE-CONTAINING MATERIALS

摘要

An improved method for treating manganese-containing materials, such as nodules recovered by undersea mining, including reacting the materials with ammonia, and leaching with a mineral acid, and to methods for recovering valuable constituents from such nodules, especially manganese, cobalt, nickel, iron, copper, titanium, vanadium, cerium, and molybdenum. A method for the production of nitrate products is also disclosed.

主权项

1. A method of recovering metal values from manganese-containing materials, comprising the steps of:
a. obtaining manganese-containing materials also containing other metals; b. reacting the manganese-containing materials with NH3 to form MnO and to release the other metals; c. leaching the reacted materials with a mineral acid to form metal salts, d. precipitating and recovering pay metals from the metal salts; and e. precipitating and recovering manganese oxides and hydroxides.