SE371424B - - Google Patents
Info
- Publication number
- SE371424B SE371424B SE1444671A SE1444671A SE371424B SE 371424 B SE371424 B SE 371424B SE 1444671 A SE1444671 A SE 1444671A SE 1444671 A SE1444671 A SE 1444671A SE 371424 B SE371424 B SE 371424B
- Authority
- SE
- Sweden
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
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
- C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
- C01B25/226—Hemihydrate process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5386970A GB1356586A (en) | 1970-11-12 | 1970-11-12 | Inhibition of calcium sulphate scale formation |
| GB222571 | 1971-01-16 | ||
| GB469071 | 1971-02-15 | ||
| GB4456071 | 1971-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE371424B true SE371424B (de) | 1974-11-18 |
Family
ID=27447220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1444671A SE371424B (de) | 1970-11-12 | 1971-11-11 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5510543B1 (de) |
| DE (1) | DE2155617B2 (de) |
| FR (1) | FR2114584A5 (de) |
| GB (1) | GB1356586A (de) |
| NL (1) | NL169576C (de) |
| SE (1) | SE371424B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049774A (en) | 1970-11-12 | 1977-09-20 | Fisons Limited | Process for reducing formation of gypsum scale durng the washing of calcium sulphate hemihydrate crystals |
| US4221769A (en) * | 1972-11-08 | 1980-09-09 | Fisons Limited | Process for preventing the formation of calcium sulphate scale |
| FR2372118A1 (fr) * | 1976-11-30 | 1978-06-23 | Prod Chimique Montagne Noire | Nouveaux procedes de fabrication d'acides phosphoriques par voie humide |
-
1970
- 1970-11-12 GB GB5386970A patent/GB1356586A/en not_active Expired
-
1971
- 1971-11-09 DE DE19712155617 patent/DE2155617B2/de not_active Withdrawn
- 1971-11-11 SE SE1444671A patent/SE371424B/xx unknown
- 1971-11-12 JP JP8999271A patent/JPS5510543B1/ja active Pending
- 1971-11-12 FR FR7140486A patent/FR2114584A5/fr not_active Expired
- 1971-11-12 NL NL7115613A patent/NL169576C/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL169576B (nl) | 1982-03-01 |
| DE2155617B2 (de) | 1980-01-24 |
| DE2155617A1 (de) | 1972-05-25 |
| GB1356586A (en) | 1974-06-12 |
| NL7115613A (de) | 1972-05-16 |
| JPS5510543B1 (de) | 1980-03-17 |
| NL169576C (nl) | 1982-08-02 |
| FR2114584A5 (de) | 1972-06-30 |