Grinding process
US5033682A · kind A · utility
25Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1988 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Oct 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process of grinding ceramic materials such as zirconia comprises grinding in an agitated media-type mill in the presence of a dispersant, the process being characterized in that the grinding media has a particle size of from 0.8 3.0 mm, and in that the quantity of media present is such that the average stand-off distance between adjacent media particles is from 30-90 um. The preferred apparatus is an attrition mill with an additional holding tank which allows recycling. The ceramic powders thus produced are fine with an unusually narrow particle size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.