Patents Assigned to Portlandzementwerk Dotternhausen Rudolf Rohbach Kommanditgesellschaft
  • Process for producing cement clinker
    Patent number: 4110121
    Abstract: To produce cement clinker, particulate material such as limestone, clay, iron oxide and sand is fed to a heat exchanger in which it is heated by heat supplied from a furnace. The heated material is conveyed to the furnace and sintered therein to form the cement clinker. Fuel formed from organic waste, for example motor vehicle tires, is used as the fuel.
    Type: Grant
    Filed: June 8, 1977
    Date of Patent: August 29, 1978
    Assignee: Portlandzementwerk Dotternhausen Rudolf Rohbach Kommanditgesellschaft
    Inventors: Helmuth Rechmeier, Gerhard Rohrbach