GB301864A - Method of leaching raw phosphate - Google Patents
Method of leaching raw phosphateInfo
- Publication number
- GB301864A GB301864A GB31470/28A GB3147028A GB301864A GB 301864 A GB301864 A GB 301864A GB 31470/28 A GB31470/28 A GB 31470/28A GB 3147028 A GB3147028 A GB 3147028A GB 301864 A GB301864 A GB 301864A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- leaching
- acid
- calcium
- phosphates
- 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
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
- C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
- C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
301,864. Kunstd³nger-Patent-Verwertungs Akt.-Ges., (Assignees of Liljenroth, F. G.) Dec. 7, 1927, [Convention date]. Grant of Patent opposed. Phosphoric acid; ammonium phosphates.- In the production of phosphoric acid or soluble phosphates by leaching raw phosphates and separating the calcium from the solution as calcium sulphate, a temperature of at least 80‹ C., say 95‹ C., is employed for the separation, whereby a crystalline form of the sulphate which settles rapidly is obtained. The process may therefore be carried out with concentrated solutions of the reagents. Alkali salts such as potassium or ammonium phosphates, sulphates, nitrates, or chlorides may be present during the separation. The leaching and separation may both be effected at the high temperature, or the calcium be first brought into solution. and be then precipitated at the high temperature, or the calcium sulphate be first precipitated at a lower temperature, and the temperature be then raised above 80‹ C. Sulphuric acid with or without an alkali sulphate, or nitric or hydrochloric acid with the necessary amount of an alkali sulphate may be used for the leaching. When ammonium sulphate is used as precipitant, the raw phosphate may be mixed with a solution thereof and then the acid be added; when potassium sulphate is used, it is dissolved in the leaching acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE301864X | 1927-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB301864A true GB301864A (en) | 1930-01-16 |
Family
ID=20307449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31470/28A Expired GB301864A (en) | 1927-12-07 | 1928-10-30 | Method of leaching raw phosphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB301864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3520653A (en) * | 1966-07-01 | 1970-07-14 | Ugine Kuhlmann | Manufacture of sodium phosphate |
-
1928
- 1928-10-30 GB GB31470/28A patent/GB301864A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3520653A (en) * | 1966-07-01 | 1970-07-14 | Ugine Kuhlmann | Manufacture of sodium phosphate |
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