Patent ID: 8038791
Filing Date: 2011-10-18
Classification: C04B,F27B,Y02P

Abstract:
1. A method for manufacturing a cement product, comprising the steps of: providing a system for forming clinker, wherein the system consists of: deriving clinker ingredients including a first material comprising a clinker feedstock material, and a second material consisting of a ladle metallurgical facility slag produced by a ladle metallurgical facility steel production system; delivering a proportion of the clinker feedstock material to the ladle metallurgical facility slag to the feed-end of the rotary kiln by: conveying, with the first variable-speed conveyor belt, the clinker feedstock material to the feed-end of the rotary kiln at a first conveying speed and conveying, with the second variable-speed conveyor belt, the ladle metallurgical facility slag to the feed-end of the rotary kiln at a second conveying speed, wherein the second conveying speed is less than the first conveying speed, wherein the clinker feedstock material and the ladle metallurgical facility slag forms a stream of clinker ingredients; and directing the stream of clinker ingredients from the feed-end, through the rotary kiln, past the flame and out of the heat-end, and, as the stream of clinker ingredients is directed past the flame, the flame is utilized for heating the stream of clinker ingredients.