| abstract |
An improved method for treating manganese-containing materials, such as seafloor manganese nodules, by leaching such materials with aqueous HNO 3 and polymerized nitric oxide (N 2 O 3 ) x , 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-containing material to release any titanium, vanadium, cerium, molybdenum and other metals from the manganese oxides and to make them available to be recovered, as well as providing a method of producing a fertilizer grade nitrate product. |