System and process for abatement of casting pollution, reclaiming resin bonded sand, and/or recovering a low BTU fuel from castings
US4325424A · kind A · utility
15Cited by
8References
11Claims
0Family size
Inventor
Key dates
| Filing date | Mar 14, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Mar 14, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C5/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A low vacuum is applied to selected surface areas of a resin bonded sand mold to draw ambient air into selected portions of the mold. The air entering the mold burns out a significant portion of the resin binder to form a low BTU gas fuel and to recover casting heat for use in a waste heat boiler or other heat abstractions device. Therefore, foundry air pollution is reduced, the burned out portion of the molding sand is recovered for immediate reuse, and a savings in fuel and energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.