Method of and apparatus for reclaiming foundry sand
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United States of America Patent
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Oct 6, 1998
Grant Date -
N/A
app pub date -
Sep 18, 1995
filing date -
Sep 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Salvaged foundry sand is reclaimed by introducing salvaged sand into a vacuum kneading tank, adding water and binder to the salvaged sand and kneading the salvaged sand under vacuum. A target strength value of the reclaimed sand is set and the amount of water and binder to be added to the salvaged sand on the basis of the temperature of the salvaged sand before kneading in the vacuum kneading tank so that reclaimed sand of the target strength value is obtained.
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