Patents Assigned to Charbonnages De France (Etablissement Public)
  • Method of slaking quicklime contained in ash
    Patent number: 5330572
    Abstract: According to the method fly ash is pre-hydrated using cold water and the mixture is then treated in a receptacle under pressure from superheated or saturated steam at a temperature lying between 130.degree. C. and 250.degree. C. The method is applicable to any substance containing quicklime that is to be slaked.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: July 19, 1994
    Assignee: Charbonnages De France (Etablissement Public)
    Inventors: Jacques Blondin, Oussama Baalbaki