Patents Assigned to Eleusis Bauxite Mines-Mining Industrial and Shipping Inc.
  • Method for increasing the MnO.sub.2 content of natural manganese dioxide ore
    Patent number: 4089928
    Abstract: An active natural manganese dioxide mineral for use in dry battery cells is produced from a natural manganese dioxide ore by reacting the ore or a preconcentrate thereof with a solution of an acid. The acid reacts with the carbonates, such as calcium carbonate, to produce water-soluble salts which are then washed away. The resultant mineral can have an MnO.sub.2 content of 80% by weight or more.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: May 16, 1978
    Assignee: Eleusis Bauxite Mines-Mining Industrial and Shipping Inc.
    Inventor: Zafiris Foroglou