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AssigneeKHD Humboldt Wedag GmbH
InventorsClaus-Jürgen Steffler, Hans-Wilhelm Meyer
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In cement clinker production installations, especially with short rotary tubular kiln, in order to find a way in which the thermally highly stressed rotary kiln intake chamber can be protected from overstress and therewith the entire production installation can be reliably operated it is proposed, according to the invention, to introduce directly into the rotary kiln intake chamber, a finely granular non-preheated substance usable in the cement clinker production process, to suspend or disperse it there in the rotary kiln exhaust gas and thereby to continuously cool the kiln intake chamber, and to discharge the heated finely granular substance with the exhaust gas from the kiln intake chamber and to add it to the process raw meal or direct it elsewhere.
A process for the production of cement clinker from raw meal which is preheated in at least one heat exchanger train traversed by exhaust gas from a rotary tubular kiln having a cyclone suspended gas-heat exchanger system, said raw meal being precalcined if necessary in a precalcination stage and burned in a sintering zone of the rotary tubular kiln into cement clinker, which cement clinker is cooled in an after-engaged clinker cooler, in which process there are used in the precalcination stage the exhaust gas stream from the rotary tubular kiln and an exhaust air stream from the clinker cooler, separately or together, for the precalcination of the raw meal, comprising the steps of introducing a fine granular non-preheated substance usable in the cement clinker production process directly into an intake chamber of the rotary kiln, suspending or dispersing the fine granular substance there in the rotary kiln exhaust gas and thereby continuously cooling the kiln intake chamber, after which the heated fine granular substance with the exhaust gas is discharged from the kiln intake chamber.
A process for the production of cement clinker from raw meal comprising the steps of:
A process for the production of cement clinker from raw meal comprising the steps of:
Dependencies are inferred from the claim text.