Process for recovering sand and bentonite clay used in a foundry
US6834706B2 · kind B2 · utility
12Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jun 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C5/185
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Sand, bentonite clay and organics recovered as foundry waste from a green sand mold foundry are reclaimed for reuse in making new green sand molds and mold cores by a multi-step process involving both hydraulic and mechanical separation steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.