Thyssenkrupp At.pro Tec Gmbh

Klockner-humboldt-deutz Ag

Heinrich-Wilhelm Gudenau

Hans-Heinrich Heldt

Alexander Babich

Gerd König

Wolfram König

Dieter-Georg Senk

Peter Paschen

Helmut Preuss

Dieter Georg Senk

Werner Wenzel

Reinhold Schonberger

Rao, Chatty

Wolfram KÖNIG

Apparatus for operating a shaft furnace, whereby an upper section of the shaft furnace is charged with raw materials which due to gravity descend inside the furnace while the atmosphere prevailing within the shaft furnace causes part of the raw materials to melt and/or to be reduced, and in a lower section of the shaft furnace a process gas is injected so as to at least partly modify the atmosphere prevailing in the shaft furnace. The pressure and/or volume flow of the injected process gas is dynamically modulated within a time span of 40 s. Also, a shaft furnace operable by said method, thus achieving improved through-gassing.

Method for operating a shaft furnace, and shaft furnace operable by that method

The present invention relates to a shaft furnace as well as a method for operating a shaft furnace. For example, the present invention relates to methods for operating a shaft furnace which include charging an upper region of the shaft furnace with raw materials; the raw materials sink in the shaft furnace under the influence of gravity and a part of the raw materials is smelted an/or at least partially reduced under the effect of the atmosphere prevailing within the shaft furnace. The methods further comprise admitting an addition gas via at least one addition opening spaced from a lower admission opening and/or discharging a shaft furnace gas via a shaft furnace gas line to provide discharge of gaseous reaction products from the interior of the shaft furnace.

Shaft furnace and method for operating a furnace

Method for operating a shaft furnace, whereby an upper section of the shaft furnace is charged with raw materials which due to gravity descend inside the furnace while the atmosphere prevailing within the shaft furnace causes part of the raw materials to melt and/or to be reduced, and in a lower section of the shaft furnace a process gas is injected so as to at least partly modify the atmosphere prevailing in the shaft furnace. The pressure and/or volume flow of the injected process gas is dynamically modulated within a time span of 40 s. Also, a shaft furnace operable by said method, thus achieving improved through-gassing.

Method for operating a shaft furnace, and shaft furnance operable by that method

Method and apparatus for the manufacture of molded bodies from sludges in which a plurality of sludges having different average particle sizes are subjected sequentially to filtration and dehydration in a mold to build up the molded body.

Method and apparatus for the manufacture of mold bodies, particularly

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Aachen, Germany

Heinrich-Wilhelm Gudenau