Patents Represented by Law Firm Chemetals Corporation
  • Recovering metal values from marine manganese nodules
    Patent number: 4123499
    Abstract: A method for selectively extracting metal values from manganese bearing ores such as marine nodules. The ore is initially leached to solubilize manganese and other desirable metals as nitrates. The resulting solution is then treated with manganous hydroxide to selectively precipitate metals such as copper, nickel and cobalt. The enriched mixture of metal hydroxides is separated from the manganese nitrate solution, which is decomposed to recover high purity MnO.sub.2.
    Type: Grant
    Filed: May 20, 1977
    Date of Patent: October 31, 1978
    Assignee: Chemetals Corporation
    Inventors: Jay Y. Welsh, Irving Sochol