Process and plant for producing hydraulic cement

Details Process and plant for producing hydraulic cement Process and plant for producing hydraulic cement

1980-10-14

1982-03-09

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

432 13, 432 14, 432106, 432111, C04B 702

Patent

active

043187455

ABSTRACT:
A pulverized raw mixture is mixed in a vertical calciner with comminuted preheated fuel, which is burned in said vertical calciner to supply heat to said pulverized raw mixture in order to calcine the same. Hot exhaust gases from said calciner are used to preheat said pulverized raw mixture before it enters said calciner. The pulverized mixture which has been calcined is entrained out of said calciner in said exhaust gases and is separated from said exhaust gases and then fed to a rotary kiln and is burned therein to produce cement clinker. The cement clinker is cooled in a cooling air stream, which is thus heated. An exhaust gas stream consisting of at least part of the exhaust gases from the rotary kiln is fed into said calciner from below. The calciner is supplied with combustion air consisting of at least part of the thus heated cooling air. Said fuel is comminuted in contact with said exhaust gas stream and is then entrained into said calciner in said exhaust gas stream.

REFERENCES:
patent: 4022629 (1977-05-01), Garrett et al.

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