GB822146A - Fertilisers - Google Patents
FertilisersInfo
- Publication number
- GB822146A GB822146A GB2695755A GB2695755A GB822146A GB 822146 A GB822146 A GB 822146A GB 2695755 A GB2695755 A GB 2695755A GB 2695755 A GB2695755 A GB 2695755A GB 822146 A GB822146 A GB 822146A
- Authority
- GB
- United Kingdom
- Prior art keywords
- granules
- oil
- fertilizer
- proportion
- h4p2o7
- 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
- C05B19/00—Granulation or pelletisation of phosphatic fertilisers, other than slag
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Granular fertilizers are surface coated with an anticorrosive additive comprising a water-soluble condensed phosphate other than a cyclic trimeta- or tetrametaphosphate and which is derived from acids of the formula H4P2O7, H5-P3O10 and (HPO3) x, the coating being caused to adhere to the granules by means of an oil or other similar viscous material, e.g. aqueous solutions of gelatin, or sodium aliginate. Suitable additives are derived from an acid of formula H4P2O7 by replacing any proportion of the hydrogen ions with alkali metal or ammonium ions. The additives, which should be present in the proportion of at least 0,25% by weight of the fertilizer, may be applied to the granules in various ways, for example a hydrocarbon oil of viscosity 30,000 Redwood No. 2 seconds at 70 DEG F. and 179 Redwood No. 2 seconds at 200 DEG F. is heated to 180 DEG F. and sprayed on to the granules, whereafter tetra sodium pyrophosphate is added as a dust. Using this process, a suitable proportion of oil is from 0,1% to 0,5% by weight of the fertilizer. Alternatively, the tetra sodium pyrophosphate may be sprayed with a similar oil, and this material subsequently mixed with the fertilizer granules. Specification 822,145 is referrred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2695755A GB822146A (en) | 1955-09-21 | 1955-09-21 | Fertilisers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2695755A GB822146A (en) | 1955-09-21 | 1955-09-21 | Fertilisers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB822146A true GB822146A (en) | 1959-10-21 |
Family
ID=10251859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2695755A Expired GB822146A (en) | 1955-09-21 | 1955-09-21 | Fertilisers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB822146A (en) |
-
1955
- 1955-09-21 GB GB2695755A patent/GB822146A/en not_active Expired
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