GB316550A - Process for producing mono-calcium phosphate and mixtures of mono- and di-calcium phosphate - Google Patents
Process for producing mono-calcium phosphate and mixtures of mono- and di-calcium phosphateInfo
- Publication number
- GB316550A GB316550A GB22226/29A GB2222629A GB316550A GB 316550 A GB316550 A GB 316550A GB 22226/29 A GB22226/29 A GB 22226/29A GB 2222629 A GB2222629 A GB 2222629A GB 316550 A GB316550 A GB 316550A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium phosphate
- mono
- liquor
- dicalcium phosphate
- washing
- 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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/04—Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Dairy Products (AREA)
Abstract
316,550. Palazzo, F. C., and Palazzo, F. July 30, 1928, [Convention date]. Phosphoric acid.-An aqueous extract of superphosphate, containing free phosphoric acid, is treated with dicalcium phosphate to obtain either monocalcium phosphate or a mixture thereof with dicalcium phosphate, the product being dried under reduced pressure at say 50‹ C. In carrying out the process superphosphate may be leached in two stages, first to get a concentrated liquor saturated with monophosphate and containing most of the free phosphoric acid, and then to obtain a second liquor which is treated with milk of lime to precipitate dicalcium phosphate, the latter after washing and drying being reacted with the first liquor. The liquor obtained by washing the dicalcium phosphate may be used in the preparation of the milk of lime employed, and those obtained by washing undissolved residues for the leaching operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT316550X | 1928-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB316550A true GB316550A (en) | 1930-10-20 |
Family
ID=11234212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22226/29A Expired GB316550A (en) | 1928-07-30 | 1929-07-19 | Process for producing mono-calcium phosphate and mixtures of mono- and di-calcium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB316550A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418167A (en) * | 2015-11-19 | 2016-03-23 | 昆明川金诺化工股份有限公司 | Method of reducing triple superphosphate free acid with fertilizer grade calcium hydrophosphate |
| WO2023136734A1 (en) * | 2022-01-17 | 2023-07-20 | Ultee Mathew | Manufacture of fertiliser |
-
1929
- 1929-07-19 GB GB22226/29A patent/GB316550A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418167A (en) * | 2015-11-19 | 2016-03-23 | 昆明川金诺化工股份有限公司 | Method of reducing triple superphosphate free acid with fertilizer grade calcium hydrophosphate |
| WO2023136734A1 (en) * | 2022-01-17 | 2023-07-20 | Ultee Mathew | Manufacture of fertiliser |
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