Method for the thermal treatment of mineral raw materials

Details Method for the thermal treatment of mineral raw materials Method for the thermal treatment of mineral raw materials

1983-11-04

1985-08-06

Williams, Howard S.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

C04B 736

Patent

active

045333963

ABSTRACT:
A method and apparatus for the thermal treatment of mineral raw materials for the manufacture of cement clinker wherein the raw materials are separately preheated and at least partially calcined in separate first and second preheating systems. One of the systems is charged with a mixture of raw materials and fuel, usually a low-grade fuel, to produce calcined meal and exhaust gases. The exhaust gases are passed from the first preheating system into the second preheating system to aid in preheating and calcining the raw materials therein. The calcined meals from both the first and second preheating systems are jointly introduced into a burning system to form cement clinker which is then cooled in the usual way. Additionally, exhaust gases from the burning system and from the cooler can be passed into the second preheating system for preheating and calcining the raw materials.

REFERENCES:
patent: 2991187 (1961-07-01), Sellers et al.
patent: 3451665 (1969-06-01), Strassen
patent: 3498594 (1970-03-01), Rickhof
patent: 3895955 (1975-07-01), Kondo et al.
patent: 4022568 (1977-05-01), Meedom
patent: 4045162 (1977-08-01), Christiansen
patent: 4071310 (1978-01-01), Ghestem
patent: 4260369 (1981-04-01), Warshawsky
patent: 4363668 (1982-12-01), Herchenbach

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