Patents by Inventor Rolf Linder

Rolf Linder 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).

  • Patent number: 4076954
    Abstract: This invention is related to a method and a process for producing metals by reducing and smelting metal oxides in two steps, the first of said steps comprising prereduction of a metal oxide charge. The prereduced metal oxide is transferred directly to the second step comprising final reduction of the prereduced metal oxide in an electrically heated smelting furnace with hydrocarbon containing reducing agent. A cooling agent is injected into the reaction gases evolved from the smelting furnace to cool said gases to a temperature at which they can be transferred directly to the prereduction furnace as a reducing agent without causing sticking of the charge in said furnace. The cooling agent is especially selected so as to increase the molar quantity of reducing gas by chemical or physical interaction with the reaction gas from the smelting furnace.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: February 28, 1978
    Inventor: Rolf Linder
  • Patent number: 3976472
    Abstract: This invention is related to a method and a process for producing metals by reducing and smelting metal oxides in two steps, the first of said steps comprising prereduction of a metal oxide charge. The prereduced metal oxide is transferred directly to the second step comprising final reduction of the prereduced metal oxide in an electrically heated smelting furnace with hydrocarbon containing reducing agent.A cooling agent is injected into the reaction gases evolved from the smelting furnace to cool said gases to a temperature at which they can be transferred directly to the prereduction furnace as reducing agent without causing sticking of the charge in said furnace. The cooling agent is especially selected so as to increase the molar quantity of reducing gas by chemical or physical interaction with the reaction gas from the smelting furnace.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: August 24, 1976
    Inventor: Rolf Linder