Patents Assigned to SKF Steel Engineering
  • Method of minimizing energy consumption when reducing iron oxide with reducing gases
    Patent number: 4432789
    Abstract: Energy consumption may be minimized when reducing iron oxide with reducing gases which are at least partially re-circulated in the process and where the re-circulation gas is washed to remove the reaction product CO.sub.2 in what is known as a CO.sub.2 wash to enable it to be re-used, by the heat requirement necessary for regenerating the washing liquid in the CO.sub.2 wash being entirely or partially covered by the physical heat content in top gas from the shaft furnace and/or gas leaving the sponge-iron cooler of the shaft furnace.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: February 21, 1984
    Assignee: SKF Steel Engineering
    Inventors: Goran Mathisson, Sven Santen