Title:
MANGANDANKAINO NIDANKAIRYUDOSHOKANGEN
Document Type and Number:
Japanese Patent JPS5150203
Kind Code:
A
Abstract:
Process in which manganese nodules are treated to enable metal values to be recovered. Manganese ore nodules are treated in a two-stage fluid bed process to produce a leachable product. In the first stage, dried nodules are calcined using direct fuel injection under a neutral or slightly oxidizing atmosphere to remove about one-half of the oxygen content. Subsequently, in the second stage, the calcined nodules are reduced with synthesis gas to render the metal values leachable. The metal values such as copper and nickel are leached from the reduced nodules with an ammonia-ammonium carbonate leach solution.
Inventors:
HAABAATO YUUGEN BAANAA
DEBITSUDO SUTANREI DEEBIISU
RESUTAA JON SUZABO
DEBITSUDO SUTANREI DEEBIISU
RESUTAA JON SUZABO
Application Number:
JP10338175A
Publication Date:
May 01, 1976
Filing Date:
August 26, 1975
Export Citation:
Assignee:
KENNECOTT COPPER CORP
International Classes:
B32B15/04; C22B1/10; C22B3/00; C22B3/04; C22B3/14; C22B5/14; C22B23/00; C22B47/00; (IPC1-7): C22B3/00; C22B23/04; C22B47/00