METHOD OF REUSING CORE SAND
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United States of America Patent
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Issued Date -
May 6, 2021
app pub date -
Jan 15, 2021
filing date -
Oct 19, 2015
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Abstract
A method of reusing core sand includes crushing a core used for casting into granules, the core includes water glass as a binder, and the water glass includes water-soluble water glass and water-insoluble water glass; heating the core; detaching the water glass from the core sand; and separating and collecting the core sand from a mixture of the water glass and the core sand.
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