GB296022A - - Google Patents
Info
- Publication number
- GB296022A GB296022A GB22332/28A GB2233228A GB296022A GB 296022 A GB296022 A GB 296022A GB 22332/28 A GB22332/28 A GB 22332/28A GB 2233228 A GB2233228 A GB 2233228A GB 296022 A GB296022 A GB 296022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonate
- magnesium
- double salt
- potassium
- phosphate
- 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
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Fertilizers (AREA)
Abstract
296,022. Schmidt, F. L. Aug. 23, 1927, [Convention date]. Calcium phosphate; magnesium carbonate; double salts.-A mineral phosphate is rendered citrate soluble by roasting say at 800-1300‹ C. with potassium carbonate obtained from potassium magnesium bicarbonate. Decomposition of the double salt is effected in known manner by warming its aqueous suspension to 80‹ C. or by treating it at 40‹ C. with magnesium oxide or hydroxide, the magnesium carbonate thereby recovered being used in the production of further quantities of the double salt. Preferably the finely divided phosphate is admixed with a concentrated, say a 50 per cent, solution of the carbonate to form a paste, which is then roasted. The double salt may be produced by adding magnesium carbonate, it may be in paste form, to a concentrated solution of potassium chloride, and subjecting the mixture to the action of gases containing carbon dioxide, for instance those produced by the roasting operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE296022T | 1927-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB296022A true GB296022A (en) | 1929-07-11 |
Family
ID=31894124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22332/28A Expired GB296022A (en) | 1927-08-23 | 1928-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB296022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142007A (en) * | 1983-06-24 | 1985-01-09 | Griffith Thomas | Alkaline processing of phosphates |
-
1928
- 1928-08-01 GB GB22332/28A patent/GB296022A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142007A (en) * | 1983-06-24 | 1985-01-09 | Griffith Thomas | Alkaline processing of phosphates |
| US4668487A (en) * | 1983-06-24 | 1987-05-26 | Griffith Thomas | Alkaline processing of naturally occurring calcium aluminium and iron phosphates |
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