FR2529187A2 - Prepn. of di:calcium phosphate for feedstuffs - by direct reaction of phosphoric acid and chalk - Google Patents
Prepn. of di:calcium phosphate for feedstuffs - by direct reaction of phosphoric acid and chalk Download PDFInfo
- Publication number
- FR2529187A2 FR2529187A2 FR8211174A FR8211174A FR2529187A2 FR 2529187 A2 FR2529187 A2 FR 2529187A2 FR 8211174 A FR8211174 A FR 8211174A FR 8211174 A FR8211174 A FR 8211174A FR 2529187 A2 FR2529187 A2 FR 2529187A2
- Authority
- FR
- France
- Prior art keywords
- phosphoric acid
- phosphate
- soluble
- lime
- dry
- 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.)
- Granted
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 19
- 239000001506 calcium phosphate Substances 0.000 title claims abstract description 9
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 title description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 title 1
- 235000011010 calcium phosphates Nutrition 0.000 title 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 15
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 15
- 239000004571 lime Substances 0.000 claims abstract description 15
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 13
- 239000010452 phosphate Substances 0.000 claims abstract description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 13
- 239000000292 calcium oxide Substances 0.000 claims abstract description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000019691 monocalcium phosphate Nutrition 0.000 claims abstract description 7
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims abstract description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims 1
- 239000008240 homogeneous mixture Substances 0.000 claims 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract description 20
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 241001465754 Metazoa Species 0.000 abstract 1
- 230000009969 flowable effect Effects 0.000 abstract 1
- 235000013305 food Nutrition 0.000 abstract 1
- CKRORYDHXIRZCH-UHFFFAOYSA-N phosphoric acid;dihydrate Chemical compound O.O.OP(O)(O)=O CKRORYDHXIRZCH-UHFFFAOYSA-N 0.000 abstract 1
- 229960004838 phosphoric acid Drugs 0.000 description 15
- 235000021317 phosphate Nutrition 0.000 description 9
- 239000000047 product Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 2
- 235000019731 tricalcium phosphate Nutrition 0.000 description 2
- 229940078499 tricalcium phosphate Drugs 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical class [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/322—Preparation by neutralisation of orthophosphoric acid
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Fertilizers (AREA)
Abstract
Description
Le brevet principal concerne un procédé pour la production de phosphate bicalcique pour usage dans les mangeailles selon lequel on fait réagir l'acide phosphorique à haute concentration directement avec de l'oxyde de calcium finement moulu. The main patent relates to a process for the production of bicalcium phosphate for use in feeds, in which phosphoric acid is reacted in high concentration directly with finely ground calcium oxide.
Le brevet principal crée une disposition particu lière par laquelle il est possible d'obtenir du phosphate bicalcique bihydrate à L'étant sec, c'est-à-dire contenant pratiquement la seule eau de cristallisation, en faisant réagir directement l'acide phosphorique et l'oxyde de calcin sous des conditions convenables. Le procédé selon le brevet principal est réalisé essentiellement dans un seul stade de production, puisqu'il suffit d'assurer le développement exothermique de la réaction pour l'obtention d'un produit sec, tandis que la haute réactivité de l'oxyde de calcium avec l'acide phosphorique donne lieu à un produit final qui est exempt de toute particule de chaux libre ou englobée; des stades supplémen tares de travail de purifaction ou de séchage ne sont donc pas nécessaires. The main patent creates a special arrangement by which it is possible to obtain bicalcium phosphate bihydrate in the dry state, that is to say containing practically only the water of crystallization, by reacting directly the phosphoric acid and cullet oxide under suitable conditions. The process according to the main patent is carried out essentially in a single production stage, since it suffices to ensure the exothermic development of the reaction to obtain a dry product, while the high reactivity of calcium oxide with phosphoric acid gives rise to a final product which is free of any particles of free or enclosed lime; additional stages of purifaction or drying work are therefore not necessary.
Conformément au brevet principal, le procédé pour la production de phosphate bicalcique bihydrate, à utiliser dans les mangeailles par réaction directe de l'acide phosphorique sur la chaux, est caractérisé en ce qu'on fait réagir dans un seul stade par charges successives, en profitant du chauffage créé par la réaction exothermique, de l'acide phosphorique à une concentration comprise entre 50 et 75 % de
H3 P04 et de l'oxyde de calcium en poudre jusqu'à l'obtention d'un produit final en poudre, sec et coulant.According to the main patent, the process for the production of bicalcium phosphate bihydrate, to be used in mangeailles by direct reaction of phosphoric acid on lime, is characterized in that one reacts in a single stage by successive charges, taking advantage of the heating created by the exothermic reaction, phosphoric acid at a concentration between 50 and 75% of
H3 P04 and calcium oxide powder until a final powdery, dry and flowing product is obtained.
La présente addition crée un perfectionnement par lequel l'invention, objet du brevet principal, devient applicable à la production d'un melange homog3ne en poudre, sec et coulant de phosphate bicalcique et de phosphate monocalcique contenant une quantité plus importante de P205, QÇ une forme plus soluble et mieux as3lmilable par le bétail que celle selon la demande de brevet antérieur. The present addition creates an improvement by which the invention, subject of the main patent, becomes applicable to the production of a homogeneous powder, dry and flowing mixture of bicalcium phosphate and monocalcium phosphate containing a greater amount of P205, QÇ a form more soluble and better as3lmilable by cattle than that according to the prior patent application.
La disposition suivant l'addition est caractérisée en ce qu'on fait réagir dans un seul stade de acide phos phorique à une concentration comprise entre 60 et 75 % de
H3P04 et de l'oxyde de calcium jusqu'à l'obtention d'un mélange homogène en poudre, sec et coulant, de phosphate bicalcique et de phosphate monocalcique , dont la concentration en
P205 est supérieure à 50 % et la solubilité dans l'eau est également supérieure à 50 %, le reste étant soluble dans le citrate d'amonium. The arrangement following the addition is characterized in that one reacts in a single stage of phos phoric acid at a concentration of between 60 and 75% of
H3PO4 and calcium oxide until a homogeneous dry, flowing powder mixture of bicalcium phosphate and monocalcium phosphate is obtained, the concentration of
P205 is more than 50% and the solubility in water is also more than 50%, the rest being soluble in ammonium citrate.
Dans le brevet principal on a décrit la préparation de phosphate bicalcique bihydraté et sec par réaction de la chaux avec de l'acide phosphorique concentré à 50-60% en poids ou jusqu'à 70% en présence de carbonate de calcium. On obtient ainsi du phosphate bicalcique en poudre sèche contenant toutefois encore une certaine quantité de phosphate tricalcique (neutre), ce qui conduit à une diminution de la teneur en phosphore (jamais supérieure à 19%) et à une moindre solubilité. In the main patent, the preparation of bicalcium phosphate, hydrated and dry, has been described by reaction of lime with concentrated phosphoric acid at 50-60% by weight or up to 70% in the presence of calcium carbonate. Bicalcium phosphate in dry powder is thus obtained, however still containing a certain amount of (neutral) tricalcium phosphate, which leads to a reduction in the phosphorus content (never greater than 19%) and to a lower solubility.
On a maintenant trouvé que si l'on fait réagir directement de l'acide phosphorique à une concentration comprise entre 60% et 75% sur de la chaux en poudre très fine, on obtient un mélange de phosphates bicalcique et monocalcique en poudre sèche et coulante complètement soluble dans l'eau ou dans le citrate d'ammonium. Cela prouve qu'il n'y a plus de phosphate tricalcique, tandis que la teneur en phosphore s'élève à 22% environ. Un avantage supplémentaire consiste dans le fait que la poudre obtenue, bien qu'elle contienne du phosphate monocalcique, n'est pas déliquescente et peut être conservée à l'air libre sans précautions particulières. It has now been found that if phosphoric acid is reacted directly at a concentration of between 60% and 75% on very fine powdered lime, a mixture of bicalcium and monocalcium phosphates in dry and flowing powder is obtained. completely soluble in water or in ammonium citrate. This proves that there is no longer any tricalcium phosphate, while the phosphorus content is around 22%. An additional advantage consists in the fact that the powder obtained, although it contains monocalcium phosphate, is not deliquescent and can be stored in the open air without special precautions.
L'acide phosphorique employé pour la réaction, à une concentration comprise entre 60% et 75% en poids, est ajouté dans un réacteur muni d'un opérateur à ruban double à une quantité donnée de chaux avec une vitesse comprise entre 500 et 2500 litres/heure. L'addition peut être continue ou discontinue. I1 est également possible d'ajouter, à une quantité donnée de chaux alternativement ou en même temps, de l'acide phosphorique et de la chaux de manière continue ou discontinue. The phosphoric acid used for the reaction, at a concentration of between 60% and 75% by weight, is added to a reactor equipped with a double ribbon operator at a given quantity of lime with a speed of between 500 and 2500 liters /hour. The addition can be continuous or discontinuous. It is also possible to add, to a given quantity of lime alternatively or at the same time, phosphoric acid and lime continuously or discontinuously.
Les quantités, vitesses d'addition, temps de réaction, etc. sont fixés de manière à obtenir un produit sec et coulant avec un contenu en P205 supérieur aux 50E
Les paramètres ci-dessus dépendent de la concentration de l'acide phosphorique, de la réactivité de la chaux et de la quantité de chaleur que le système peut céder
Le titre en CaO de la chaux est compris entre 80% et 100% en poids, tandis que sa granulométrie est telle que 909 des granules passent à travers un sas au tamis de 5000 mailles/cm2 et 100% à travers un sas de 1000 mailles/cm2. The quantities, addition rates, reaction times, etc. are fixed so as to obtain a dry and flowing product with a P205 content greater than 50E
The above parameters depend on the concentration of phosphoric acid, the reactivity of the lime and the amount of heat that the system can release
The CaO title of the lime is between 80% and 100% by weight, while its particle size is such that 909 of the granules pass through a sieve sieve of 5000 meshes / cm2 and 100% through a sas of 1000 meshes / cm2.
Les exemples suivants illustrent plus particulière- ment l'invention sans nullement la limiter. The following examples illustrate the invention more particularly without in any way limiting it.
Exemple 1. 2800 kg de chaux à 94E de CaO moulue de manière que 908 des granules passent à travers le sas de 5000 mailles/cm sont chargés dans un réacteur avec opérateur à double ruban. 8600 kg d'acide phosphorique épuré ayant un titre de 72% en H3PO4 sont ajoutés à travers des atomiseurs à une vitesse de 1950 litres/heure. Example 1. 2800 kg of lime with 94E of CaO ground so that 908 of the granules pass through the airlock of 5000 meshes / cm are loaded into a reactor with double ribbon operator. 8600 kg of purified phosphoric acid having a titer of 72% of H3PO4 are added through atomizers at a speed of 1950 liters / hour.
A la fin de l'addition d'acide phosphorique on laisse réagir pendant 60 minutes. At the end of the addition of phosphoric acid, it is left to react for 60 minutes.
On obtient ainsi 8850 kg de phosphate mono-bicalcique sec et coulant contenant 50,67% de P205 total et 28,18% de soluble dans l'eau. 8850 kg of dry and flowing mono-bicalcium phosphate are thus obtained, containing 50.67% of total P205 and 28.18% of water-soluble.
Exemple 2. 500 kg de chaux à 94% de CaO sont chargés dans un réacteur à double ruban. Example 2. 500 kg of lime with 94% CaO are loaded into a double ribbon reactor.
A l'aide d'atomiseurs on ajoute 13000 kg d'acide phosphorique à 70% de H3P04 à une vitesse de 1600 litres/ heure. Using atomizers, 13,000 kg of phosphoric acid containing 70% H3PO4 are added at a speed of 1600 liters / hour.
En même temps que l'addition d'acide phosphorique on commence à ajouter 3650 kg de chaux à une vitesse de 800 kg/heure. At the same time as the addition of phosphoric acid one begins to add 3650 kg of lime at a speed of 800 kg / hour.
On laisse enfin réagir pendant 60 minutes. Finally allowed to react for 60 minutes.
On obtient 13070 kg de phosphate mono-bicalcique contenant 50,438 de P205 total et 28,9% de P205 soluble dans liteau, le reste étant soluble dans le citrate d'ammonium. 13070 kg of mono-bicalcium phosphate are obtained containing 50.438 of total P205 and 28.9% of P205 soluble in batten, the remainder being soluble in ammonium citrate.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR828211174A FR2529187B2 (en) | 1976-02-10 | 1982-06-25 | PROCESS FOR THE PRODUCTION OF BICALCIC PHOSPHATE FOR USE IN FEEDERS FROM PHOSPHORIC ACID AND LIME |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2003476 | 1976-02-10 | ||
| FR828211174A FR2529187B2 (en) | 1976-02-10 | 1982-06-25 | PROCESS FOR THE PRODUCTION OF BICALCIC PHOSPHATE FOR USE IN FEEDERS FROM PHOSPHORIC ACID AND LIME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2529187A2 true FR2529187A2 (en) | 1983-12-30 |
| FR2529187B2 FR2529187B2 (en) | 1990-06-08 |
Family
ID=26222970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR828211174A Expired - Lifetime FR2529187B2 (en) | 1976-02-10 | 1982-06-25 | PROCESS FOR THE PRODUCTION OF BICALCIC PHOSPHATE FOR USE IN FEEDERS FROM PHOSPHORIC ACID AND LIME |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2529187B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149828C1 (en) * | 1999-07-01 | 2000-05-27 | Общество с ограниченной ответственностью "Эковита" | Method of synthesis of food dicalcium phosphate |
| US7273521B1 (en) * | 2006-04-28 | 2007-09-25 | J.M. Huber Corporation | Method of producing granulated calcium carbonate/calcium phosphate composite materials with very high calcium to phosphate mole ratios |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391992A (en) * | 1964-06-04 | 1968-07-09 | Swift & Co | Feed grade dicalcium phosphate |
-
1982
- 1982-06-25 FR FR828211174A patent/FR2529187B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391992A (en) * | 1964-06-04 | 1968-07-09 | Swift & Co | Feed grade dicalcium phosphate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149828C1 (en) * | 1999-07-01 | 2000-05-27 | Общество с ограниченной ответственностью "Эковита" | Method of synthesis of food dicalcium phosphate |
| US7273521B1 (en) * | 2006-04-28 | 2007-09-25 | J.M. Huber Corporation | Method of producing granulated calcium carbonate/calcium phosphate composite materials with very high calcium to phosphate mole ratios |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2529187B2 (en) | 1990-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5571303A (en) | Sulfur-based fertilizer and process for production thereof | |
| CN1329347C (en) | A process for the manufacture of sulphur-containing ammonium phosphate fertilizers | |
| US3425819A (en) | Method of preparing a complex fertilizer comprising urea coated with ammonium phosphate | |
| US4028087A (en) | Fertilizer processes incorporating scrubbed flue gas sludge byproduct | |
| JPH04231313A (en) | Manufacture of ammonium polyphosphate and device | |
| CN1130321C (en) | Production method of granular nitrogen-phosphorus composite fertilizer containing secondary element | |
| FR2605311A1 (en) | PROCESS FOR PRODUCING A PHOSPHORUS-IMPROVING FERTILIZER COMPOSITE. | |
| FR2529187A2 (en) | Prepn. of di:calcium phosphate for feedstuffs - by direct reaction of phosphoric acid and chalk | |
| CN106831055A (en) | A kind of method that slurry-spraying pelletizing produces high nitrogen sulfur base water-flush compound fertilizer | |
| EP0039241A2 (en) | Method and apparatus for producing nitrophosphate fertilizers | |
| US4764200A (en) | Application of finely divided dicyanodiamide onto ammonium-containing and sulfate-containing fertilizers | |
| CN116425569A (en) | A production method for increasing the available phosphorus of double superphosphate | |
| CN111205134A (en) | Preparation method of modified poly-humic acid ammonium phosphate | |
| CN1306952A (en) | Process for producing compound diammonium hydrogen phosphate fertilizer | |
| WO2001042172A1 (en) | Process for the preparation of urea superphosphate fertilizers | |
| CA1178817A (en) | Compound solid fertilizer and manufacturing method thereof | |
| JPS58145685A (en) | Manufacture of granular composite fertilizer | |
| CN107935666A (en) | A kind of double ammoniation-granulation techniques | |
| GB2129410A (en) | Production of calcium phosphates | |
| US6053958A (en) | Process for preparation of fertilizer containing slag | |
| JPS59141478A (en) | Manufacture of liquid fertilizer | |
| US4101637A (en) | Direct granulation process for triple superphosphate | |
| FR2621031A1 (en) | PROCESS FOR THE PREPARATION OF MONOCALCIUM PHOSPHATE | |
| JP3446063B2 (en) | Iron-containing fast-releasing phosphate fertilizer and its production method | |
| US6280494B1 (en) | Method for producing fertilizer grade DAP having an increased nitrogen concentration in a spray column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name |