System for handling high sulfur materials

Details System for handling high sulfur materials System for handling high sulfur materials

1975-05-13

1977-12-27

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

C04B 736

Patent

active

040653200

ABSTRACT:
Sulfur oxides have a strong affinity for free lime and readily form gypsum anhydrite. By utilizing 2200.degree. F. or higher on-gas containing reduced quantities of sulfur to the preheat zone of a material treating apparatus, large quantities of sulfur can be removed from gases evolved in the rotary kiln. Utilizing lower sulfur content on-gas to preheat will substantially improve the ability of the system to lower both sulfur and alkali levels in the clinker. Substantially free lime in the form of fines is introduced into the kiln off-gas stream to form gypsum anhydrite which is removed and has the potential to be utilized as a by-product. Essentially all of the remaining gaseous sulfur that has not been absorbed by the lime bearing dust is absorbed by the free lime in the pellets in the preheat zone of a material treating apparatus.

REFERENCES:
patent: 2718453 (1955-09-01), Beckman
patent: 3343908 (1967-09-01), Wickert
patent: 3653645 (1972-04-01), Heian

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