Apparatus for the processing of foundry sands
US5477909A · kind A · utility
1Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Nov 29, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B11/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mold sand is regenerated with or without mixing with new sand and followed by the addition of binder to it by fluidizing the sand in a chamber as it passes from an inlet to an outlet which can be a step or downcomer opening into the mixer. Compressed air is forced from below through the sand and entrains away small particles while coarse particles or heavy pieces are collected in a discharge unit which can be opened from time to time to carry away the coarse materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.