Patents by Inventor Jean M. van Langen

Jean M. van Langen 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: 4687183
    Abstract: Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication with the reduction column by heat generated by reaction of oxygen-containing gas and carbonaceous material which reaction provides said reducing gas. To improve control of the process, the oxygen-containing gas and the carbonaceous material are respectively substantially pure oxygen and coal powder which are delivered separately into the melt vessel, and the liquid iron bath in the melt vessel is stirred so as at least partly to be kept in motion. By separate control of the oxygen and coal supplies, e.g. the level and/or direction of delivery, and by control of stirring, it is possible to control the ratio of CO and CO.sub.2 in the reducing gas and also the heat output in the melt vessel.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: August 18, 1987
    Assignee: Hoogovens Groep B.V.
    Inventor: Jean M. van Langen
  • Patent number: 4579588
    Abstract: Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication with the reduction column by heat generated by reaction of oxygen-containing gas and carbonaceous material which reaction provides said reducing gas. To improve control of the process, the oxygen-containing gas and the carbonaceous material are respectively substantially pure oxygen and coal powder which are delivered separately into the melt vessel, and the liquid iron bath in the melt vessel is stirred so as at least partly to be kept in motion. By separate control of the oxygen and coal supplies, e.g. the level and/or direction of delivery, and by control of stirring, it is possible to control the ratio of CO and CO.sub.2 in the reducing gas and also the heat output in the melt vessel.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: April 1, 1986
    Assignee: Hoogovens Groep B.V.
    Inventor: Jean M. van Langen