Method and apparatus for the thermal treatment of fine-grained material with hot gases
AssigneeKlockner-Humboldt-Wedag AG
InventorsKunibert Brachthauser, Horst Herchenbach
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Abstract
An apparatus for the thermal treatment of fine-grained material such as for the calcination of cement including a suspension type gas heat exchanger having a plurality of stages of progressively higher temperatures in the direction of material flow. A conduit connects the hottest stage of the heat exchanger with a rotary kiln. A combustion zone is provided within the conduit and rapidly oxidizing fuel components are introduced into this combustion zone. Slowly oxidizing fuel components are introduced into the rotary kiln in a second combustion zone.
Claims6
An apparatus for the thermal treatment of fine-grained material with hot gases comprising
- a suspension gas heat exchanger having a plurality of stages of progressively higher temperatures in the direction of material flow,
- a rotary kiln,
- conduit means connecting the hottest stage of said heat exchanger with said rotary kiln,
- means within said conduit means defining a first combustion zone,
- means for introducing rapidly oxidizing fuel components into said first combustion zone,
- means in said rotary kiln defining a second combustion zone, and
- means for introducing slowly oxidizing fuel components into said second combustion zone.
Dependencies are inferred from the claim text.