Sand cleaning apparatus
US6453982B1 · kind B1 · utility
5Cited by
70References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D29/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Apparatus for reclaiming sand is provided for removing impurities therefrom. The apparatus includes a vibratory conveyor in which the sand is fluidized and heated. The conveyor vibrates the sand to obtain a more uniform temperature. The apparatus may be used to clean used process sand, such as by pyrolyzing binder from foundry sand, or may be used to remove impurities from virgin sand, thereby minimizing the amount of silica which must be added to the virgin sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.