GB804292A - Process for producing fertilizers and products thereof - Google Patents
Process for producing fertilizers and products thereofInfo
- Publication number
- GB804292A GB804292A GB8287/56A GB828756A GB804292A GB 804292 A GB804292 A GB 804292A GB 8287/56 A GB8287/56 A GB 8287/56A GB 828756 A GB828756 A GB 828756A GB 804292 A GB804292 A GB 804292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- produced
- phosphate
- metaphosphate
- exceed
- 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)
- Fertilizers (AREA)
Abstract
Phosphate fertilizers are produced by treating calcium, sodium, or potassium metaphosphate with a strong base consisting of sodium or potassium hydroxide, carbonate, oxide or peroxide, in the presence of water. Pearl ash or soda ash are preferred. The metaphosphate is hydrolysed to form the primary o-phosphate which is then converted by the base to the secondary o-phosphate. The proportion of the alkali used should not exceed the stoichiometric quantity required, and the proportion of water should not exceed 3 to 4 times this quantity, the maximum quantity being required with maximum quantities of the alkali base. In examples, calcium or potassium metaphosphate is mixed with potassium hydroxide or pearl ash dissolved in a little water, whereupon the temperature rises and a dry crumbly solid is produced. This is then stored and cured. With a higher water conent a slurry is produced which is rendered crumbly by air drying at 250 DEG F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US804292XA | 1955-03-29 | 1955-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB804292A true GB804292A (en) | 1958-11-12 |
Family
ID=22157309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8287/56A Expired GB804292A (en) | 1955-03-29 | 1956-03-16 | Process for producing fertilizers and products thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB804292A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144726A (en) * | 1983-08-04 | 1985-03-13 | Griffith Thomas | Extracting soluble phosphates from naturally ocurring iron and aluminium phosphates |
| GB2145403A (en) * | 1983-08-25 | 1985-03-27 | Griffith Thomas | Production of phosphates from alkali-processed phosphate rock |
-
1956
- 1956-03-16 GB GB8287/56A patent/GB804292A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144726A (en) * | 1983-08-04 | 1985-03-13 | Griffith Thomas | Extracting soluble phosphates from naturally ocurring iron and aluminium phosphates |
| US4609535A (en) * | 1983-08-04 | 1986-09-02 | Griffith Thomas | Extracting soluble phosphates from naturally occurring iron and aluminium phosphates using solutions of alkali metal carbonates and hydroxides |
| GB2145403A (en) * | 1983-08-25 | 1985-03-27 | Griffith Thomas | Production of phosphates from alkali-processed phosphate rock |
| AU568666B2 (en) * | 1983-08-25 | 1988-01-07 | Thomas, G. | Production of phosphates from alkali-proecessed phosphate rock |
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