Kaolin calciner waste heat and feed recovery process
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United States of America Patent
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-
Oct 9, 1990
Issued Date -
N/A
app pub date -
Feb 3, 1989
filing date -
Jun 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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