Composition for use in a magnetically fluidized bed
US4394282A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1982 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Sep 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Novel compositions, and process for the operation of a magnetically stabilized fluidized bed. The compositions are characterized as a particulate material which can be oriented within, and formed into a magnetically stabilized fluidized bed which comprises: PA1 (i) particles of average size ranging from about 10 micrometers (.mu.m) to about 4000 .mu.m, preferably from about 50 .mu.m to about 500 .mu.m, each containing a nonferromagnetic component, or components, and preferably a catalytically active component, or components, composited with a single elongate ferromagnetic component, the ferromagnetic component being multidomain, having dimensions of at least 1 .mu.m in all directions and a length:diameter (L/D) ratio of at least 2 but not more than 17.3, said ferromagnetic component being present in the composite particles as inclusions within a nonferromagnetic matrix constituting at least 0.5%, preferably at least 5%, but not more than 3/2(L/D).sup.2 of the total volume of each particle, where L/D ratio of the longest dimension of a ferromagnetic inclusion relative to the shortest dimension, and the particles can, in said magnetically stabilized fluidized bed rotate, or turn to l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.