Green compact of incineration ashes of sewerage sludge and its burned product
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United States of America Patent
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Jan 7, 1992
Issued Date -
N/A
app pub date -
Aug 3, 1990
filing date -
Sep 29, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
According to the present invention, incineration ashes of sewerage sludge are compacted with pressure, but without additives, to have the bulk specific gravity of 0.9-2.5. Since the green compact has sufficient strength and reduced volume in comparison with the incineration ashes before compacting, it enables mass dumping without causing secondary pollution. Moreover, if the green compact is fired to have the bulk specific gravity of 1.4-3.5, both the volume and weight are reduced much more, realizing easy handling of the resulted burned product.
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