Process for recovering sand and bentonite clay used in a foundry
US6554049B2 · kind B2 · utility
11Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
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.