Production of articles from minerals
US4608303A · kind A · utility
9Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1982 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Jun 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Vermiculite ore is contacted with an aqueous solution with at least one salt of sodium, lithium or an organosubstituted ammonium cation followed by aqueous washing so that the ore swells. The swollen vermiculite in aqueous suspension is subjected to a shearing action until a suspension containing vermiculite particles having dimensions less than 50 microns is produced with elimination from the suspension of all particles having a diameter larger than 50 microns. Water can then be removed from the suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.