Patent ID: 8695515

Claim:
A plant comprising: a kiln in which raw material and secondary fuel are introduced and heated by gases formed by burning of a primary fuel in the kiln, the kiln having at least one first inlet for introducing the raw material and at least one second inlet for introducing the secondary fuel, the at least one first inlet and at least one second inlet positioned such that the raw material is introduced into the kiln separately from the secondary fuel; the kiln also having an apparatus for keeping the secondary fuel separate from the raw material while the secondary fuel is converted; and wherein the secondary fuel is introduced to and converted in an area of the kiln that is located farther from a clinker cooler than an area in which the raw material is introduced into the kiln such that the secondary fuel is introduced to the kiln prior to the raw material as the secondary fuel and raw material move through the kiln toward the clinker cooler.