GB314977A - Improvements in and relating to the manufacture of phosphoric acid and products containing phosphoric acid - Google Patents
Improvements in and relating to the manufacture of phosphoric acid and products containing phosphoric acidInfo
- Publication number
- GB314977A GB314977A GB10422/29D GB1042229D GB314977A GB 314977 A GB314977 A GB 314977A GB 10422/29 D GB10422/29 D GB 10422/29D GB 1042229 D GB1042229 D GB 1042229D GB 314977 A GB314977 A GB 314977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphoric acid
- temperature
- sulphuric acid
- mixture
- aktiebolaget
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fertilizers (AREA)
Abstract
314,977. Aktiebolaget Kemiska Patenter, (Assignees of Konstgodningsfabriks Aktiebolaget i Landskrona). July 7, 1928, [Convention date]. Grant of Patent opposed. Phosphoric acid. - In decomposing phosphate materials with sulphuric acid in presence of phosphoric acid, the decomposition is effected in a closed vessel under pressure whereby foaming is prevented and a higher temperature may be used resulting in the formation of an easilyseparatable precipitate of calcium sulphate in the form CaSO4.¢H2O or anhydrite, or a mixture of these. Phosphoric acid solution from a previous operation containing at least 15 per cent P2O5 may be mixed with the phosphate material, and the mixture introduced into sulphuric acid. The reaction may be carried out under the conditions of temperature and concentration of sulphuric acid described in Specification 314,976, the temperature being preferably at least (120-p)‹ C. where p is the per cent by weight of P2O5 in the phosphoric acid supplied to the reaction mixture.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE314977X | 1928-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB314977A true GB314977A (en) | 1930-08-05 |
Family
ID=6148842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10422/29D Expired GB314977A (en) | 1928-07-07 | 1929-04-04 | Improvements in and relating to the manufacture of phosphoric acid and products containing phosphoric acid |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR672847A (en) |
| GB (1) | GB314977A (en) |
-
1929
- 1929-04-04 GB GB10422/29D patent/GB314977A/en not_active Expired
- 1929-04-09 FR FR672847D patent/FR672847A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR672847A (en) | 1930-01-07 |
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