BE468041A - - Google Patents
Info
- Publication number
- BE468041A BE468041A BE468041DA BE468041A BE 468041 A BE468041 A BE 468041A BE 468041D A BE468041D A BE 468041DA BE 468041 A BE468041 A BE 468041A
- Authority
- BE
- Belgium
- Prior art keywords
- solution
- ammonia
- sulfur dioxide
- cao
- soluble
- Prior art date
Links
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical class OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 230000001264 neutralization Effects 0.000 claims description 2
- 230000003472 neutralizing Effects 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H Tricalcium phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims 1
- 239000001506 calcium phosphate Substances 0.000 claims 1
- 229910000389 calcium phosphate Inorganic materials 0.000 claims 1
- 235000011010 calcium phosphates Nutrition 0.000 claims 1
- 235000021317 phosphate Nutrition 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-K 2qpq Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- -1 phosphate compound Chemical class 0.000 description 2
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Ammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- BWKOZPVPARTQIV-UHFFFAOYSA-N azanium;hydron;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [NH4+].OC(=O)CC(O)(C(O)=O)CC([O-])=O BWKOZPVPARTQIV-UHFFFAOYSA-N 0.000 description 1
- 230000002939 deleterious Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- XKUUMWKWUZRRPD-UHFFFAOYSA-N heptan-2-amine;sulfuric acid Chemical compound [O-]S([O-])(=O)=O.CCCCCC(C)[NH3+].CCCCCC(C)[NH3+] XKUUMWKWUZRRPD-UHFFFAOYSA-N 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
- C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
- C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Description
<Desc/Clms Page number 1>
" Procédé de fabrication d'un composé phosphaté soluble dans le citrate-, utile comme agents fertilisant".
Cette invention est¯, relative à la fabrication d'un composé phosphaté soluble dans le citrate, utile comme agent fertilisant, à partir de solutions contenant,du calcium et de l'acide phosphorique-, en neutralisant.ces solutions avec de l'ammoniaque et en introduisant;, en même temps du dioxide de soufre ou en ajoutant', un sulfite J ou un bisulfite..Le précipité formé a une composition similaire.-aux apatites naturelles, il est, cependant complètement,soluble dans une solution de citrate ammonique. Il constitue en lui-même un excellent agent, fertilisant., et peut être mélangé avec d'autres produits pour former un composé fertilisant..
Pour obtenir un précipité de composition correcte semblable à celle de l'apatite il est' désirable d'effectuer la précipita-
<Desc/Clms Page number 2>
tion dans un intervalle de pH de environ 6 - 8. Une réaction fortement acide et spécialement une réaction fortement alcaline a une influence nuisible sur la solubilité, quoique saulement lors de grands écarts, l'hydroxyapatite faiblement soluble soit formée.
On précipite Ca 0 et P2 O5 à partir de la solution dans la proportion moléculaire 3,3 <CaO< 4,0 mais il n'est pas P2O5 nécessaire que CaO et P2 O5 soient contenus dans la solution dans cette proportion, par exemple, on peut obtenir avec une proportion moléculaire CaO = 2,0 un produit complètement
P2O5 soluble.
Après séparation de la solution et séchage, le produit est, prêt pour l'emploi comme agent fertilisant..La. teneur en sulfite ne donne naissance à aucun effet nuisible, même dans des sols à réaction acide.
Quand on part d'une solution obtenue en dissolvant des phosphates bruts dans de l'acide nitrique et après cela en traitant, par exemple, avec de l'ammoniaque et du dioxide de soufre il ne reste qu'une solution contenant principalement du nitrate ammonique.
La solution contient aussi une certaine quantité de sulfite ammonique, qui est facilement oxydé pour donner du sulfate ammonique par l'action de l'air. Au lieu de séparer le précipité de la solution, on peut soumettre le tout à une évaporation et concentration, le résidu constituant un agent fertilisant composé et concentré.
EXEMPLE 1.
On a dissous 1.000 kg de phosphate de curaçao (50 % CaO ; 34,2 % P2 05 ) avec 1.650 litres d'acide nitrique à 53 %.
On versait lentement à une température de 110 C la
<Desc/Clms Page number 3>
solution obtenue de cette manière dans une quantité de liquide déjà neutralisé, résultant d'un stade précédent et ayant un pH de 6. En même temps on introduisait de l'ammoniaque et du dioxide de soufre. On maintenait le pH à 6 en réglant d'une façon continue la proportion de la solution d'acide frais et d'ammoniaque. Cela exigeait 310 kg. d'ammoniaque et 215 kg. de dioxide de soufre. Le précipité formé était soluble à 100 % dans une solution neutre de nitrate ammonique et contenait
CaO, P2O5 et C02 en proportion moléculaire respective de
3,7 @1 ::0,7.
EXEMPLE: 2.
On versait graduellement à une température de 75 C la même quantité du même liquide contenant le phosphate acide mentionné dans l'exemple 1 dans une quantité de liquide déjà neutralisé, ayant un pH de 7, tandis qu'on ajoutait en même temps une solution de (N H4)2 CO3 et d'ammoniaque en quantité telle que le pH soit constamment maintenu à 7. Cela exigeait 245 kg. de (N H4)2 C03 et 245 kg. d'ammoniaque.
<Desc / Clms Page number 1>
"A method of making a citrate soluble phosphate compound useful as fertilizing agents".
This invention relates to the manufacture of a phosphate compound soluble in citrate, useful as a fertilizing agent, from solutions containing calcium and phosphoric acid, by neutralizing these solutions with ammonia. and by introducing sulfur dioxide at the same time or by adding a sulphite J or a bisulphite. The precipitate formed has a composition similar to natural apatites, however it is completely soluble in a solution of citrate ammonia. It is in itself an excellent fertilizing agent, and can be mixed with other products to form a fertilizing compound.
In order to obtain a precipitate of the correct composition similar to that of apatite it is desirable to carry out the precipitation.
<Desc / Clms Page number 2>
tion in a pH range of about 6 - 8. A strongly acid reaction, and especially a strongly alkaline reaction, has a deleterious influence on the solubility, although only at large deviations poorly soluble hydroxyapatite is formed.
Ca 0 and P2 O5 are precipitated from the solution in the molecular proportion 3.3 <CaO <4.0 but it is not necessary that CaO and P2 O5 be contained in the solution in this proportion, for example, one can obtain with a molecular proportion CaO = 2.0 a product completely
P2O5 soluble.
After separation from the solution and drying, the product is ready for use as a fertilizing agent. sulfite content does not give rise to any harmful effects, even in soils with acid reaction.
When starting from a solution obtained by dissolving crude phosphates in nitric acid and after that by treating, for example, with ammonia and sulfur dioxide, only a solution remains containing mainly ammonium nitrate .
The solution also contains a certain amount of ammonium sulphite, which is easily oxidized to give ammonium sulphate by the action of air. Instead of separating the precipitate from the solution, the whole can be subjected to evaporation and concentration, the residue constituting a compound and concentrated fertilizer.
EXAMPLE 1.
1,000 kg of curaçao phosphate (50% CaO; 34.2% P2 05) were dissolved with 1,650 liters of 53% nitric acid.
We poured slowly at a temperature of 110 C the
<Desc / Clms Page number 3>
solution obtained in this way in a quantity of liquid already neutralized, resulting from a previous stage and having a pH of 6. At the same time ammonia and sulfur dioxide were introduced. The pH was maintained at 6 by continuously adjusting the proportion of the solution of fresh acid and ammonia. This required 310 kg. ammonia and 215 kg. sulfur dioxide. The precipitate formed was 100% soluble in neutral ammonium nitrate solution and contained
CaO, P2O5 and C02 in respective molecular proportions of
3.7 @ 1 :: 0.7.
EXAMPLE: 2.
The same quantity of the same liquid containing the acid phosphate mentioned in Example 1 was gradually poured at a temperature of 75 ° C. into a quantity of liquid already neutralized, having a pH of 7, while at the same time a solution of (N H4) 2 CO3 and ammonia in an amount such that the pH was constantly maintained at 7. This required 245 kg. of (N H4) 2 C03 and 245 kg. ammonia.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE468041A true BE468041A (en) |
Family
ID=118900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE468041D BE468041A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE468041A (en) |
-
0
- BE BE468041D patent/BE468041A/fr unknown
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