GB829490A - Process for producing mixed fertilizers and products thereof - Google Patents
Process for producing mixed fertilizers and products thereofInfo
- Publication number
- GB829490A GB829490A GB1059659A GB1059659A GB829490A GB 829490 A GB829490 A GB 829490A GB 1059659 A GB1059659 A GB 1059659A GB 1059659 A GB1059659 A GB 1059659A GB 829490 A GB829490 A GB 829490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metaphosphate
- mixed
- sulphuric acid
- acid
- product
- 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
- 239000003337 fertilizer Substances 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 239000001117 sulphuric acid Substances 0.000 abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 229910019142 PO4 Inorganic materials 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 239000000908 ammonium hydroxide Substances 0.000 abstract 2
- ROPDWRCJTIRLTR-UHFFFAOYSA-L calcium metaphosphate Chemical compound [Ca+2].[O-]P(=O)=O.[O-]P(=O)=O ROPDWRCJTIRLTR-UHFFFAOYSA-L 0.000 abstract 2
- 125000005341 metaphosphate group Chemical group 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000010452 phosphate Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000007921 spray Substances 0.000 abstract 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract 1
- 239000001166 ammonium sulphate Substances 0.000 abstract 1
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
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
<PICT:0829490/III/1> Phosphate fertilizers are made by treating calcium metaphosphate with sulphuric acid in the presence of water, whereby the metaphosphate is hydrolysed to o-phosphate and this is further acidulated, the acid product being then neutralized by adding an ammoniating agent. The amount of water used is 1 to 5 times the stoichiometric quantity, and the acid/metaphosphate ratio being 0.1 to 1.5 by weight. In a suitable apparatus, sulphuric acid and calcium metaphosphate ground to 8 mesh, are admitted to the upper tier 1, Fig. 2, of a pug mill, and water is added to form a slurry and mixed by contra-rotating paddles. The mixture soon hydrolyses and is fed at about 100 DEG to 300 DEG F. by a rotary agitator section 8 in a deep bed to a second tier pug mill 2 supplied from below with an ammoniating agent fed through spray pipe 11. Preferably a salt having a negative heat of solution is added at the point of ammoniation to reduce the temperature of the semi-plastic solid, e.g. KCl, NH4NO3, (NH4)SO4. The neutralized product may be mixed with ammonium sulphate produced in situ, from sulphuric acid, and ammonia supplied to spray pipes 11b, 11a respectively. The product is then further mixed to form a dry crumbly solid in mill 3. As ammoniating agents, anhydrous ammonia, or solutions of ammonium hydroxide, ammonium nitrate, urea-ammonium hydroxide with or without formaldehyde, or mixtures of these, may be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1059659A GB829490A (en) | 1956-03-14 | 1956-03-14 | Process for producing mixed fertilizers and products thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1059659A GB829490A (en) | 1956-03-14 | 1956-03-14 | Process for producing mixed fertilizers and products thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB829490A true GB829490A (en) | 1960-03-02 |
Family
ID=9970755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1059659A Expired GB829490A (en) | 1956-03-14 | 1956-03-14 | Process for producing mixed fertilizers and products thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB829490A (en) |
-
1956
- 1956-03-14 GB GB1059659A patent/GB829490A/en not_active Expired
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