Method of magnetic separation and apparatus therefore
US5176260A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C1/035
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method of dry magnetic separation for separating materials of differing types and levels of magnetism from a raw sample is disclosed. The method includes precleaning the raw sample by first extracting a strongly magnetic fraction from a feebly magnetic fraction, followed by additional processing steps for the extraction of the feebly magnetic fraction and the collection of refined sampels for each fraction so separated. The recovered fractions are then analyzed for magnetic susceptibilities and are correlated to at least one identifying physical and/or chemcial characteristic in order to determine which fraction or fractions are to be recovered for further processing. Following that determination, the recovered fraction or fractions are processed for an additional magnetic separation step in order to yield a clean fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.