Patents Assigned to Metals Recycling Technologies Crop.
  • Patent number: 5431713
    Abstract: A method for the reclamation of zinc, lead, tin, cadmium and copper from dust containing such elements or compounds which involves leaching the dust with sulfuric acid or ammonium bisulfate, neutralization the leachate with zinc oxide or zinc hydroxide, and cementing and/or roasting various intermediate and final products for the reclamation of the above metals. The method is especially designed for reclaiming the above metals from waste streams from production processes for electrical conductors. The method is a continuous process with the recirculation of various solutions remaining after the completion of each step.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: July 11, 1995
    Assignee: Metals Recycling Technologies Crop.
    Inventors: Allan S. Myerson, Michael W. Cudahy