Lime kiln and method of retarding formation of slag ring therein

Details Lime kiln and method of retarding formation of slag ring therein Lime kiln and method of retarding formation of slag ring therein

1987-06-22

1988-08-30

Warner, Steven E.

Heating

Tumbler-type rotary - drum furnace

Having protective cooling structure

110246, 432111, F27B 738

Patent

active

047673230

ABSTRACT:
An apparatus and method for retarding the formation of a slag ring on the inner wall of a rotary lime kiln where coal combustion gases are used to provide heat in the calcining chamber of a rotary lime kiln. The inner wall of the kiln, at a predetermined location where a slag ring would tend to form, is cooled so as to cool the dispersed slag prior to contact with the inner wall of the calcining chamber sufficiently to prevent adherence of the slag to the inner wall. Cooling chambers or a cooling channel may be provided in the refractory lining forming the inner wall, or transpiration devices may be provided to inject coolant into the calcining chamber, at the predetermined location, to cool the slag and prevent adherence thereof to the inner wall.

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patent: 4671192 (1987-06-01), Hoffert et al.

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