Increased production of wet process phosphoric acid by gelatin addition
US4314978A · kind A · utility
3Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1981 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Jan 29, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B25/223
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method for the production of wet process phosphoric acid wherein the addition of relatively small amounts of gelatin to the reaction system substantially increases the filtration rate of the calcium sulphate crystals without adversely affecting the quality of the acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.