Kaolin calciner waste heat and feed recovery process

Details Kaolin calciner waste heat and feed recovery process Kaolin calciner waste heat and feed recovery process

1989-02-03

1990-10-09

Stoll, Robert L.

Compositions: ceramic

Ceramic compositions

Clay containing

423111, 106770, 106486, C04B 3304

Patent

active

049622790

ABSTRACT:
An improvement is disclosed applicable to the production of calcined and hydrous kaolins in particulate form. A process and system are disclosed in which the calciner is integrated with a filtration process and a preceding spray dryer by passing the dust-laden calciner hot off-gases to the spray dryer to achieve savings in energy. Waste heat from the calciner, and concomitantly dustlike clay particles carried in the off-gas, are thereby passed to the dryer and subsequently treated and their values recovered.

REFERENCES:
patent: 3309214 (1967-03-01), Podschus et al.
patent: 3586523 (1971-06-01), Fanselow et al.
patent: 3941872 (1976-03-01), Puskar
patent: 4246039 (1981-01-01), Mixon, Jr.
patent: 4381948 (1983-05-01), McConnell et al.
patent: 4642904 (1987-02-01), Smith, Jr.
patent: 4717559 (1988-01-01), Cummings et al.
Perry's Chemical Engineer's Handbook, pp. 20-54, McGraw Hill, N.Y., 1984.
"New-Generation Flash Dryers Boost Lime Kiln Production, Save Fuel", by Paul A. Humbert, Feb. 1980.

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