Patents Assigned to International Environmelting Corporation
  • Process for producing an environmentally acceptable abrasive product from hazardous wastes
    Patent number: 5273566
    Abstract: A method and apparatus of reclaiming hazardous inorganic wastes to produce an environmentally benign abrasive for use in loose grain processes, as a coated or bonded abrasive, or as a polishing grain. A tough and useful abrasive, with a MOH hardness of 7 to 8, is manufactured from emission control dusts of the aluminum industry or sludges from other industries, and may include small amounts of lead and cadmium oxides as toughening agents. The abrasive particles are sized by air sifting or by water sedimentation separating methods.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: December 28, 1993
    Assignee: International Environmelting Corporation
    Inventors: Gerald P. Balcar, Anurag Dwivedi