Abstract: An apparatus for producing cement clinker using a high sulfur fuel includes a wet rotary kiln, at least one sulfur analyzer, a controller, and a burner. The wet rotary kiln has a first end and a second end and processes a slurry of a raw material mixed with a certain quantity of coarse grinded high sulfur fuel received at the first end to produce cement clinker. The sulfur analyzer is produces a measure of the sulfur content of the cement clinker. The controller receives the measure from the sulfur analyzer and controls a concentration of oxygen in the kiln based on the measured sulfur content in the clinker end product. The burner is installed in the kiln at the second end and operates to burn a high sulfur fuel.

Abstract: A method of producing cement clinker using a high sulfur fuel includes introducing raw material into a Lelep-Lepol travelling grate; drying and heating the raw material in the Lelep-Lepol travelling grate while passing the raw material through the Lelep-Lepol travelling grate; transferring the heated and dried raw material from the Lelep-Lepol travelling grate to a rotary kiln; combusting a high sulfur fuel in the rotary kiln; passing the raw material through the rotary kiln in the presence of the combusting fuel so as to sinter the raw material to form a sintered material; measuring a sulfur content of the sintered material; and controlling an excess concentration of oxygen in the rotary kiln based on the measured sulfur content of the clinker end product.

Abstract: Cement clinker is produced using high sulfur fuels by combusting high sulfur fuel within a kiln. The feed material is introduced at an inlet of the kiln and is sintered by the combusting fuel to form sintered material. The sintered material is cooled to form cement clinker. The production of the sintered material is controlled by measuring the sulfur content in the cement clinker and using that measurement to control the concentration of oxygen at the inlet of the kiln. The fuel may contain up to 14% sulfur.