Patents Assigned to Indresco Canada, Inc.
  • Beneficiation of kish graphite
    Patent number: 5672327
    Abstract: A method and apparatus system are disclosed for the beneficiation of kish to produce coarse high purity graphite wherein a concentrate containing at least about 90% carbon is formed, treated with a dilute acid solution, and the pulp then subjected to an adjuvant-assisted attrition to form a novel synthetic flake graphite of 99+ wt. % carbon with at least 70% of the mass retained on +100 mesh, and an overall recovery of graphitic carbon from the feed of greater than 85% by weight.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: September 30, 1997
    Assignee: Indresco Canada, Inc.
    Inventors: George W. Bennett, Maxime Leduc, Jean-Guy St-Hilaire, Christian Garceau