Thermal treatment in a fluidized bed
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United States of America Patent
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Nov 12, 1991
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N/A
app pub date -
May 31, 1990
filing date -
May 31, 1990
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Expired
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Abstract
Processes and apparatus for the thermal treating of articles, particulary for the quench hardening of metal alloys in an improved fluidized bed containing from 21 to 60 weight percent of fine alumina particles having a size from 20 to 100 microns and from 40 to 79 weight percent of coarse alumina particles having a size from 150 to 2000 microns.
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