Apparatus for rapidly freezing molten metals and metalloids in particulate form
US4419060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Described is an apparatus for freezing molten metals and metalloids in particulate or flake form at very rapid cooling rates. A volatile coolant liquid is fed to the center of a rapidly rotating disc-like member to create an outwardly flowing film of coolant across the surface of the member. The material to be processed is fed in molten form to the coolant film coaxially with the coolant, and is thrown outwardly by centrifugal forces while being cooled by vaporization of the liquid. The rotating member may include upwardly projecting vanes for collision with the outwardly flowing material to produce a higher surface area product and a cover over a portion of its top surface to confine the materials passing through the vanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.