Recovering sand, bentonite and organics from foundry sand waste
US12350734B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jul 19, 2019 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/181
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Both a hydraulic (wet) separation process and a dry separation process are used in combination to recover sand, bentonite clay and organics from foundry waste created during operation of a green sand foundry. These recovered ingredients are then recycled for reuse in making additional green sand molds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.