Process for recovering metal values from oxides of manganese-containing materials
AssigneeDeepgreen Engineering, Pte. Ltd.
InventorsWilliam F. Drinkard, Hans J. Woerner, William M. Nixon
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Abstract
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.
Claims18
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, and forming a solution;
- c. leaching the reacted materials with a mineral acid to form metal salts,
- d. precipitating and recovering other metals from the metal salts;
- and
- e. precipitating and recovering manganese oxides and hydroxides.
A method of producing a nitrate product 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, and forming a solution;
- c. leaching the reacted materials with a nitric acid to form metal nitrates;
- d. precipitating and recovering other metals from the metal nitrates;
- and
- e. precipitating and recovering manganese oxides and hydroxides, leaving a nitrate product.
Dependencies are inferred from the claim text.