Patent ID: 6146133
Filing Date: 2000-11-14
Classification: C04B,Y02P

Abstract:
A process for the production of Portland cement clinker in cement kilns and for the material and thermal utilization of residual materials containing water, minerals and combustible parts comprising:introducing, without previous drying, the residual materials into a cement plant with a conveyor into a shaft between a clinker cooler and a kiln head;taking up the residual materials by secondary air having a temperature of about 800-1000.degree. C. and conveying the residual materials to the kiln; andintroducing the taken up residual materials into the kiln, wherein the residual materials have a content of 65-35 parts water, as well as 35-65 parts dry substance consisting of 10-30 parts mineral parts and 10-35 parts of combustible parts.