Mechanically fluidized retort and method for treating particles therein
US5407498A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Nov 2, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/28
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and apparatus for diffusion of elements into or out of small metallic particles, the apparatus consisting of a sealed retort 22 horizontally mounted on an axle 36 with the retort subtended in the interior of a heating device 11. Gas and pressure controls communicating through said axle 36 control the interior atmosphere of the retort 26. Small particles 23 to be modified are placed within the retort 22 and the retort is rotated and heated while maintaining the desired gaseous atmosphere. Rotation causes fluid-like tumbling of the particles resulting in uniform heat transfer, thorough mixing and engenders an exchange of ions between the surface and near surfaces of said particles and the atmosphere of said retort or between the particles and other material placed within said retort.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.