Patent ID: 6666680
Filing Date: 2003-12-23
Classification: C04B,F27B

Abstract:
An installation including a rotary kiln for the production of cement clinker from raw meal, which is preheated in at least two mutually parallel cyclone suspension heat exchanger trains and precalcined in a fueled calcination stage, from which a gas-solid suspension line is fed by suspension splitting into the lowermost cyclone stage of each cyclone suspension heat exchanger train for the purpose of separating the precalcined raw meal from a rotary kiln off-gas line, the precalcined raw meal substreams of the heat exchanger trains subsequently being fed directly into the rotary kiln for cement clinker burning, comprising:a vortex homogenization chamber having an inlet opening connected in receiving relation to said gas-solid suspension line of said calcination stage and a pair of outlets for discharging thoroughly blended gas-solid suspension substreams, a first discharge pipe interconnecting one of said outlets with one of said lowermost cyclone stages and a second discharge pipe interconnecting the other of said outlets with the other of said lowermost cyclone stages, whereby thoroughly blended gas-solid suspension substreams from said calcination stage are delivered to said lowermost cyclone stages of said heat exchanger trains.