Patent ID: 6709510
Filing Date: 2004-03-23
Classification: C04B,Y02P

Abstract:
A process for using mill scale, having hydrocarbons associated therewith, in the production of cement clinker using a rotary kiln system, comprising the steps of:blending and preheating feedstock material; transferring said blended and preheated feedstock material to an area in said rotary kiln system where combustion is taking place; adding an amount of said mill scale to said blended and preheated feedstock in said combustion area where said hydrocarbons are volatilized and consumed by said combustion; and blending and diffusing said feedstock materials and mill scale from said combustion area as they move from said feed end of a rotary kiln in said rotary kiln system to said heat source end of said rotary kiln thereby forming cement clinker at the heat source end of said rotary kiln.