Pelletizing alkali metal polysilicates
US3971631A · kind A · utility
5Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1974 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Aug 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/42
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing alkali metal polysilicates is disclosed. Polysilicates, produced by hydrothermally reacting an aqueous dispersion of finely-divided silica and an alkali metal hydroxide are spray dried and the solid product is fractured and pulverized. The fractured mass is then pelletized employing the solubility of the polysilicates to form a free-flowing product having a continuous, even surface. Pelletization may be effected with or without the use of water and/or binders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.