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US 2021/0129210 A1Published application
Method of reusing core sand
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsDaisuke YAMASHITA, Hirotsune WATANABE, Masashi MORIKAWA
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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.
Claims3
A reuse treatment system for core sand comprising:
- a crushing apparatus configured to crush a core used for casting into granules, the core including water glass as a binder;
- a heating apparatus configured to heat the granules at a temperature of 300° C. to 550° C.;
- a detaching apparatus configured to detach the water glass from the core sand in the granules after heating the granules;
- and
- a separating and collecting apparatus configured to separate and collect the core sand from a mixture of the water glass and the core sand, the water glass being detached from and the core sand.
2 more elements
Dependencies are inferred from the claim text.