Method for manufacturing of normal as well as ultra-fine cement

Details Method for manufacturing of normal as well as ultra-fine cement Method for manufacturing of normal as well as ultra-fine cement

1994-01-25

1995-05-23

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106762, C04B 736

Patent

active

054177600

ABSTRACT:
A method is described for manufacturing of normal as well as ultra-fine cement on the basis of cement materials, such as cement clinker, gypsum, slag, limestone, pozzolana, flyash etc. in a plant comprising at least a mill (1), a classifying separator (3), a separation cyclone (5) and a dust collector (7). By this method some of the dust-laden conveying gas which is extracted via the cyclone gas outlet duct (11) is diverted to and dedusted in the dust collector (7), and the dust from the dust collector (7) is utilized as the basis for ultra-fine cement, whereas the cyclone material from the material outlet (9) of the cyclone is utilized as normal cement. Hence it is possible to manufacture ultra-fine cement in existing grinding plants in a mechanically simple and operationally inexpensive way, while normal cement is simultaneously manufactured, without having any significant impact on the mill operation.

REFERENCES:
patent: 3385580 (1968-05-01), Ruegy
patent: 4173487 (1979-11-01), Cohen
patent: 4220476 (1980-09-01), Touborg
patent: 4331452 (1982-05-01), Causey et al.
patent: 4392890 (1983-07-01), Henin et al.
patent: 5054694 (1991-10-01), Knobloch et al.
patent: 5058813 (1991-10-01), Weit

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