Rheinische Braunkohlenwerke Ag

Other

Arbed S.a.

Friedrich H Franke

Werner Wenzel

Raymond Limpach

Peter Speich

Gunther Nothhelfer

Hans Berkenkamp

Burkhardt Dreyer

Mohamed Meraikib

Heinz G Daldrup

In a process for injecting fine-grain brown coal or lignite into a blast furnace through tuyere arches thereof, the initial speed at which coal dust, after leaving the supply conduit, moves towards the center of the blast furnace hearth is substantially lower than the speed at which the hot blast is blown into the furnace.

Process for injecting brown coal into a blast furnace

A process of manufacturing briquettes from brown coal includes drying brown coal, which is preferably in fine granular form. The dried brown coal is then heated at a first rate up to a temperature in a range of from about 300.degree. to about 320.degree. C. The brown coal is subsequently heated at a second rate, which is less than the first rate, to a temperature in the range of from about 350.degree. to about 400.degree. C. The brown coal is thereafter pressed into briquettes.

Process for the manufacture of brown coal briquettes

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.

Process for the direct reduction of iron ores

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Aachen, Germany

Friedrich H Franke