Cryogenic vibratory mill apparatus
US5513809A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1995 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Jul 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/37
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic vibratory mill designed to receive cooling fluid such as liquid nitrogen within a grinding chamber for grinding of feed material such as crumb rubber from vehicle tires for cryogenic comminution within a grinding chamber. Cooling within the grinding chamber is achieved by passing cooling fluid such as liquid nitrogen therethrough wherein most of the cooling fluid passes through longitudinal channels formed longitudinally in the cylindrically shaped grinding rods. The operating temperature is normally less than -120 degrees Fahrenheit. A vibrating drive is operative to vibrate the housing and the grinding rods therein to achieve comminution of the feed stock rubber passing therethrough. With this design most of the cooling is achieved by passing of the cooling fluid through the channels defined in the grinding rods with only a minimum amount of cooling achieved by cooling fluid passing through the grinding chamber between the rods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.