Patents Assigned to Werner Wenzel
  • Method of improving the mechanical resistance of coke
    Patent number: 4106996
    Abstract: A method of improving the mechanical resistance of coke comprises forming a liquor of fine grained coal and oil with the oil being of from 5% to 30% of the total weight, forming coal pellets of the liquor at an increased temperature of from approximately 80.degree. to 100.degree. C, and heating the pellets to transform them into coke in a known coking process. Prior to being carbonized, the pellets are advantageously coated with a separating layer of a substance preventing agglomeration, such as hematite ore, lime, fine coke, etc.
    Type: Grant
    Filed: June 28, 1977
    Date of Patent: August 15, 1978
    Assignees: Werner Wenzel, Heinrich Wilhelm Gudenau
    Inventors: Werner Wenzel, Heinrich Gudenau, Joachim Bernt
  • Process for the direct reduction of iron ores
    Patent number: 3954444
    Abstract: A process for the direct reduction of iron ores using a reducing gas mixture which is passed through a shaft furnace containing the ore to be reduced is disclosed. The process is characterized in that the partial flow of reducing gas mixture is removed from the furnace approximately at the point of transition between the magnetite and Wustite stages of the ore and is regenerated. The regenerated reducing gas is then reapplied to the furnace with a fresh reducing gas mixture resulting in a substantial energy saving.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: May 4, 1976
    Assignees: Rheinische Braunkohlenwerke AG, Werner Wenzel
    Inventors: Werner Wenzel, Peter Speich, Friedrich H. Franke, Burkhardt Dreyer