Patents Assigned to Dr. Kuttner, GmbH & Co. KG
  • Process and apparatus for producing steel from scrap
    Patent number: 4753677
    Abstract: A process and apparatus for producing steel from scrap. A cupola furnace is provided with a layer of coke in the vicinity of the tuyeres of the furnace, with scrap to be melted being supplied upstream of the layer of coke and molten scrap passing through the layer of coke to a converter located downstream of the furnace. The molten scrap is refined in the converter with oxygen, thereby producing a CO-rich converted waste gas, which is supplied to the coke layer and burned in the vicinity of the tuyeres.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: June 28, 1988
    Assignee: Dr. Kuttner, GmbH & Co. KG
    Inventor: Hans-Gunther Rachner