Formulation of phosphate rock slurries
US4374817A · kind A · utility
11Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1981 |
| Grant date | Feb 22, 1983 |
| Priority date | — |
| Expiry date | Aug 21, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B25/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The viscosity of phosphate rock slurries is reduced by incorporating in the slurry both sodium tripolyphosphate and an alkaline material, particularly sodium hydroxide. The combined amount of these two materials required to achieve a given viscosity reduction is significantly lower than the weighted average of the amounts required for each to produce individually the same viscosity reduction. The defined alkaline materials, other than sodium hydroxide, are sodium carbonate, ammonium hydroxide and potassium hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.