Patents by Inventor Holger Krutzelmann

Holger Krutzelmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for heating a slurry to a predetermined temperature
    Patent number: 6945775
    Abstract: The temperature of a metallurgical slurry in a heater vessel is accurately controlled by heating a first portion of the slurry in the heater vessel by contact with a heating medium such as steam, and by adding to the heater vessel controlled portions of a slurry at lower temperature. The lower temperature slurry may be added to the heater vessel in an intermittent or continuous manner, with addition of the lower temperature slurry being regulated by a valve, the operation of which is controlled by a control device which receives temperature information from one or more temperature sensors.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: September 20, 2005
    Inventors: Kevin S. Fraser, Murray S. Pearson, Holger Krutzelmann
  • METHOD AND APPARATUS FOR HEATING A SLURRY TO A PREDETERMINED TEMPERATURE
    Publication number: 20050053889
    Abstract: The temperature of a metallurgical slurry in a heater vessel is accurately controlled by heating a first portion of the slurry in the heater vessel by contact with a heating medium such as steam, and by adding to the heater vessel controlled portions of a slurry at lower temperature. The lower temperature slurry may be added to the heater vessel in an intermittent or continuous manner, with addition of the lower temperature slurry being regulated by a valve, the operation of which is controlled by a control device which receives temperature information from one or more temperature sensors.
    Type: Application
    Filed: September 12, 2002
    Publication date: March 10, 2005
    Inventors: Kevin Fraser, Murray Pearson, Holger Krutzelmann