GB237875A - - Google Patents
Info
- Publication number
- GB237875A GB237875A GB13940/25A GB1394025A GB237875A GB 237875 A GB237875 A GB 237875A GB 13940/25 A GB13940/25 A GB 13940/25A GB 1394025 A GB1394025 A GB 1394025A GB 237875 A GB237875 A GB 237875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesium
- silica
- calcium
- phosphate
- present
- 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
- C05B9/00—Fertilisers based essentially on phosphates or double phosphates of magnesium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A fertilizer containing tri-magnesium phosphate, a magnesium-calcium phosphate, or an alkali-magnesium-calcium phosphate is obtained by heating to about 900-1100 DEG C. in an atmosphere containing water vapour, a mixture of a natural calcium phosphate with magnesium chloride or sulphate with or without an alkali salt and with enough silica to form calcium orthosilicate with the calcium displaced by the magnesium and alkali metal. When iron or aluminium is present, the amount of silica may be reduced as calcium ferrite or aluminate are then formed, and silica may be omitted when enough is present in the raw phosphate. A suitable mixture may be made of the magnesium salt with phosphates too poor and too rich in silica, but if too much silica is present, lime must be added to combine with the excess. The atmosphere containing water vapour may be provided by admitting steam to the heating-chamber or by direct heating with a fuel containing hydrogen or by both methods. Specification 23634/07 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE598204X | 1924-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB237875A true GB237875A (en) | 1926-05-13 |
Family
ID=6574170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13940/25A Expired GB237875A (en) | 1924-08-01 | 1925-05-27 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR598204A (en) |
| GB (1) | GB237875A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2782113A (en) * | 1952-03-08 | 1957-02-19 | Iowa State College Res Found | Fertilizer compositions and method of preparation thereof |
-
1925
- 1925-05-14 FR FR598204D patent/FR598204A/en not_active Expired
- 1925-05-27 GB GB13940/25A patent/GB237875A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2782113A (en) * | 1952-03-08 | 1957-02-19 | Iowa State College Res Found | Fertilizer compositions and method of preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR598204A (en) | 1925-12-09 |
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