Ashing furnace and method
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United States of America Patent
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Aug 31, 1999
Issued Date -
N/A
app pub date -
May 29, 1998
filing date -
Dec 14, 1994
priority date (Note) -
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Abstract
A furnace comprises an enclosure, a hearth plate within the enclosure for supporting combustible material, a first heater element adjacent the hearth plate for initial combustion of the combustible material, a filter disposed above the hearth plate for filtering uncombusted products of combustion of the combustible material, and a second heater element adjacent the filter for final combustion of the uncombusted products of combustion filtered by the filter. A controller controls the first and second heater elements independently.
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