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1. (WO2013116290) TREATMENT OF MANGANESE-CONTAINING MATERIALS

Pub. No.:    WO/2013/116290    International Application No.:    PCT/US2013/023777
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Thu Jan 31 00:59:59 CET 2013
IPC: C22B 47/00
Applicants: DRINKARD RESEARCH AND DEVELOPMENT CORPORATION
Inventors: DRINKARD, William, F.
WOERNER, Hans, J.
NIXON, William, M.
Title: TREATMENT OF MANGANESE-CONTAINING MATERIALS
Abstract:
An improved method for treating manganese-containing materials, such as seafloor manganese nodules, by leaching with aqueous HNO3 and NO gas, and more particularly to methods for recovering valuable constituents from such nodules, especially manganese, cobalt, nickel, iron, and copper. It also provides a method to leach manganese material to release the titanium, vanadium, cerium, molybdenum and other metals from the manganese oxides and to make them available to be recovered.