Patents by Inventor Gunther Ropke

Gunther Ropke 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).

  • Apparatus for the direct reduction of iron ores
    Patent number: 4374585
    Abstract: A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into the furnace below the reducing zone. The hot reducing gas is injected serially into different sectors of the cross-section of the furnace and at varying velocities to force upflowing cleaned top gas to change its flow path or its flow rate, or both, periodically. Apparatus for accomplishing the method is also disclosed.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: February 22, 1983
    Assignee: Hamburger Stahlwerke GmbH
    Inventors: Gero Papst, Gunther Ropke, Hans J. Topfer
  • Process for the direct reduction of iron ores
    Patent number: 4248623
    Abstract: A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into the furnace below the reducing zone. The hot reducing gas is injected serially into different sectors of the cross-section of the furnace and at varying velocities to force upflowing cleaned top gas to change its flow path or its flow rate, or both, periodically. Apparatus for accomplishing the method is also disclosed.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: February 3, 1981
    Assignee: Hamburger Stahlwerke GmbH
    Inventors: Gero Papst, Gunther Ropke, Hans J. Topfer, deceased