Patents Assigned to QED International Limited
  • Method and apparatus for grinding
    Patent number: 5690284
    Abstract: There is disclosed a method and apparatus for grinding. Based on a vertical shaft impactor, a method is disclosed which provides improved results by allowing materials to be ground in a wet form. The grinding apparatus includes supply lines (171, 172) and inlets (170, 187) which allow material to be supplied in such a form.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: November 25, 1997
    Assignee: QED International Limited
    Inventor: Alastair Scott Murray