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US 5,882,190 AGranted
Control of cement clinker production by analysis of sulfur in the end product
OwnerJoseph Elias Doumetinventor
Life of this patent
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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.
Claims17
A method of producing cement clinker using high sulfur fuel, comprising:
- combusting high sulfur fuel within a kiln;
- introducing feed material at an inlet of the kiln;
- passing the feed material through the kiln in the presence of the combusting fuel so as to sinter the feed material to form sintered material;
- cooling the sintered material to form cement clinker;
- measuring sulfur content of the cement clinker;
- and
- controlling a concentration of oxygen at the inlet of the kiln based on the measured sulfur content.
4 more elements
An apparatus for producing cement clinker using high sulfur fuels and raw materials, comprising:
- a rotary kiln having a burner and configured to sinter the raw materials to produce sintered material;
- a cooler configured to cool the sintered material to form cement clinker;
- a sulfur analyzer configured to measure sulfur content in the cement clinker;
- and
- a controller configured to control the concentration of oxygen in the kiln based on the measured sulfur content.
2 more elements
Dependencies are inferred from the claim text.