Rotary calciner feed spiral

Details Rotary calciner feed spiral Rotary calciner feed spiral

1980-04-28

1981-09-08

Camby, John J.

Heating

Tumbler-type rotary - drum furnace

Externally heated drum or associated heating element heats...

34135, 414149, 414197, 432117, 432118, 432239, F27B 608, F27D 300

Patent

active

042882176

ABSTRACT:
In a calciner having a rotatable cylindrical retort, an improved material feed spiral has a final turn and a 3/4 turn ending immediately adjacent the retort and a next to final turn connected to the final turn and extending outwardly therefrom away from the cylindrical retort. The final turn and 3/4 turn are of a height substantially equal to a given percentage of the inner diameter of the retort and the next to final turn tapers from a height substantially equal to the given height of the final turn to a height less than the given height.

REFERENCES:
patent: 3607121 (1971-09-01), Watson et al.
patent: 4010081 (1977-03-01), Martt

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