Method for producing aggregate used in hardening compositions,

Details Method for producing aggregate used in hardening compositions, Method for producing aggregate used in hardening compositions,

1974-06-28

1976-05-04

Camby, John J.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

34 57A, 432 58, F27B 1510

Patent

active

039543900

ABSTRACT:
The stock is calcined when gaseous fuel and air are introduced into a bed of material at the bottom in separate jets uniformly distributed over the cross section of bed.
In a fluidized-bed kiln the burners are uniformly distributed over the entire area of hearth and each burner is a gas/air nozzle incorporating a cone-shaped cap a diffuser which form an annular passage for the air to pass whereas the gas passes through a central passage provided in the cone-shaped cap and running coaxially with the annular passage.
In another embodiment of the fluidized-bed kiln, the burners are fitted into the hearth of kiln uniformly over its entire area and each burner is a gas nozzle projecting upwards in the form of a vertical tube with a cone-shaped cap forming with the wall of the tube an annular passage for the gas to pass.

REFERENCES:
patent: 2528098 (1950-10-01), White
patent: 2835483 (1958-05-01), Lindsay
patent: 3085022 (1963-04-01), Koch
patent: 3737283 (1973-06-01), Nikles
patent: 3799747 (1974-03-01), Schmalfeld et al.
patent: 3822986 (1974-07-01), Tsekhovoi et al.
patent: 3861862 (1975-01-01), Steever

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