Patents Assigned to Molyscand AB
  • Wet-chemical digestion of molybdenum sulphide containing material
    Patent number: 4000244
    Abstract: The present invention relates to a special process for the recovery of molybdenum by the wet-chemical digestion of molybdenum sulphide containing materials by means of nitric acid. The invention relates especially to the combination of a leaching procedure (that provides a very pure molybdenum oxide) and a liquid extraction procedure for the recovery of molybdenum and other values from the residual solution that is left over from the leaching procedure.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: December 28, 1976
    Assignee: Molyscand AB
    Inventors: Bengt Olov Pontus Mollerstedt, Karl-Erik Backius