US2948590A - Process for the manufacture of dicalcium ...
The process of claim 1 wherein said phosphoric acid is preheated to a temperature between about 150 F. and the boiling point of said acid. 3. The process of claim 1 wherein the said slurry is utilized in about percent of the stoichiometric equivalent amount necessary for the formation of dicalcium phosphate. 4.
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WO2004076348A1 - A process for the manufacture of feed ...
The first step consists of leaching water soluble mono calcium phosphate therefrom with water or recycle wash water from one of the subsequent steps. The supernatant liquid treated with a
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US3353908A - Process for the manufacture of dicalcium ...
7. The process of claim 1, wherein the reaction is effected at a pH-value of about l -8. 8. The process of claim 7, wherein the reaction is effected at a pH-value of about 5.5-6.5. 9. The process of claim 4, wherein the dicalcium phosphate product is recovered by filtration from dissolved impurities, washed and dried.
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US1235025A - Process of making dicalcium phosphate ...
In a method of making di-calcium phosphate, the steps. which consist intreating phosphate rock with hydrochloric acid under heat, cooling the mixture to about 30 C., treating the liquid product...
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Manufactoring Process Of Dicalcium Phosphate
Dicalcium Phosphate Process Flow Diagram. Project report on di calcium phosphate animal feed.Manufacturing process of dicalcium phosphate from rock phosphate and hydrochloric acid hcl raw materials utilities requirements block diagram of dicalcium phosphate manufacture through hcl route improved process for the manufacture for dicalcium phosphate animal
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US3988420A - Processes for the manufacture of feed-grade ...
The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acid. The process comprises the reaction of an excess of phosphate rock with...
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Processes for the manufacture of feed-grade dicalcium ...
The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acid. The process comprises the reaction of an excess of phosphate rock with aqueous solutions of a mineral acid selected from hydrochloric acid, phosphoric acid and nitric acid, characterized by the fact that the free acidity of the dissolution
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Production of dicalcium phosphate by treatment of ...
This paper presents results laboratory experiments to test a new process for manufacture of dicalcium phosphate. The process is based on the nitric acidulation of phosphate rock concentrate, followed by neutralization of the extract liquor with calcium carbonate. The precipitated dicalcium phosphate is then separated from calcium nitrate solution by filtration.
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Dicalcium-Phosphates- Process, Technology, Applications ...
Dicalcium phosphate shows the most commonly used production method is known as the “wet acid” route in which rock phosphate is reacted with sulphuric acid to produce phosphoric acid. After concentration and purification to reduce the level
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Production of defluorinated dicalcium phosphate from ...
A new process to produce defluorinated dicalcium phosphate (DCP) using phosphate rock concentrate has been developed. This new process has as main characteristic the low concentration of P2O5 in the liquid phase. The process comprises three main steps: solubilization of the phosphate rock concentrate with sulfuric acid, defluorination of the
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US2948590A - Process for the manufacture of dicalcium ...
Process for the manufacture of dicalcium phosphate Download PDF Info Publication number US2948590A. US2948590A US636468A US63646857A US2948590A US 2948590 A US2948590 A US 2948590A US 636468 A US636468 A US 636468A US 63646857 A US63646857 A US 63646857A US 2948590 A US2948590 A US 2948590A Authority US
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US3353908A - Process for the manufacture of dicalcium ...
US3353908A - Process for the manufacture of dicalcium phosphate - Google Patents Process for the manufacture of dicalcium phosphate Download PDF Info Publication number US3353908A. US3353908A US23559562A US3353908A US 3353908 A US3353908 A US 3353908A US 23559562 A US23559562 A US 23559562A US 3353908 A US3353908 A US
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US1235025A - Process of making dicalcium phosphate ...
Process of making dicalcium phosphate. Download PDF Info Publication number US1235025A. US1235025A US9460216A US9460216A US1235025A US 1235025 A US1235025 A US 1235025A US 9460216 A US9460216 A US 9460216A US 9460216 A US9460216 A US 9460216A US 1235025 A US1235025 A US 1235025A Authority US United States Prior art
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WO2004076348A1 - A process for the manufacture of feed ...
This invention relates to the preparation of feed grade dicalcium phosphate from a source containing monocalcium phosphate such as super phosphate, concentrated super phosphate and the like. The first step consists of leaching water soluble mono calcium phosphate therefrom with water or recycle wash water from one of the subsequent steps.
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US3988420A - Processes for the manufacture of feed-grade ...
The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acid. The process comprises the reaction of an excess of phosphate rock with aqueous solutions of a mineral acid selected from hydrochloric acid, phosphoric acid and nitric acid, characterized by the fact that the free acidity of the dissolution
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US4154799A - Dicalcium phosphate manufacture - Google
A process is described for highly efficient recovery of phosphate values from a wide range of phosphate rock including low grade phosphate rock material by leaching with a dilute sulfuric acid and precipitating phosphate values as dicalcium phosphate. Water savings are accomplished in the process by the use of sea water instead of fresh water.
MoreDicalcium-Phosphates- Process, Technology, Applications ...
Dicalcium phosphate crystals are precipitated and after filtration and drying the resulting product is a very pure crystalline dihydrate dicalcium phosphate that is sold as Aliphos® Dical. Dicalcium phosphate is obtained from degreased bones which are demineralised by hydrochloric acid treatment and precipitated by a saturated lime solution.
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US4177052A - Process for preparing dicalcium phosphate ...
There is disclosed a process for preparing fertilizers containing dicalcium phosphate from phosphates of mineral origin by mechanical activation. According to the invention grains larger than 5 mm of the sized or unsized starting phosphate compound of mineral origin are granulated up to a grain size of 1 to 4 mm, the granulated phosphate obtained is admixed with
MoreProduction of dicalcium phosphate by treatment of ...
This paper presents results laboratory experiments to test a new process for manufacture of dicalcium phosphate. The process is based on the nitric acidulation of phosphate rock concentrate, followed by neutralization of the extract liquor with calcium carbonate. The precipitated dicalcium phosphate is then separated from calcium nitrate solution by filtration.
More
Production of defluorinated dicalcium phosphate from ...
A new process to produce defluorinated dicalcium phosphate (DCP) using phosphate rock concentrate has been developed. This new process has as main characteristic the low concentration of P 2 O 5 in the liquid phase. The process comprises three main steps: solubilization of the phosphate rock concentrate with sulfuric acid, defluorination of the
MoreUS2948590A - Process for the manufacture of dicalcium ...
Process for the manufacture of dicalcium phosphate Download PDF Info Publication number US2948590A. US2948590A US636468A US63646857A US2948590A US 2948590 A US2948590 A US 2948590A US 636468 A US636468 A US 636468A US 63646857 A US63646857 A US 63646857A US 2948590 A US2948590 A US 2948590A Authority US
MoreUS3353908A - Process for the manufacture of dicalcium ...
US3353908A - Process for the manufacture of dicalcium phosphate - Google Patents Process for the manufacture of dicalcium phosphate Download PDF Info Publication number US3353908A. US3353908A US23559562A US3353908A US 3353908 A US3353908 A US 3353908A US 23559562 A US23559562 A US 23559562A US 3353908 A US3353908 A US
MoreUS1235025A - Process of making dicalcium phosphate ...
Process of making dicalcium phosphate. Download PDF Info Publication number US1235025A. US1235025A US9460216A US9460216A US1235025A US 1235025 A US1235025 A US 1235025A US 9460216 A US9460216 A US 9460216A US 9460216 A US9460216 A US 9460216A US 1235025 A US1235025 A US 1235025A Authority US United States Prior art
MoreWO2004076348A1 - A process for the manufacture of feed ...
This invention relates to the preparation of feed grade dicalcium phosphate from a source containing monocalcium phosphate such as super phosphate, concentrated super phosphate and the like. The first step consists of leaching water soluble mono calcium phosphate therefrom with water or recycle wash water from one of the subsequent steps.
MoreUS3988420A - Processes for the manufacture of feed-grade ...
The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acid. The process comprises the reaction of an excess of phosphate rock with aqueous solutions of a mineral acid selected from hydrochloric acid, phosphoric acid and nitric acid, characterized by the fact that the free acidity of the dissolution
MoreUS4154799A - Dicalcium phosphate manufacture - Google
A process is described for highly efficient recovery of phosphate values from a wide range of phosphate rock including low grade phosphate rock material by leaching with a dilute sulfuric acid and precipitating phosphate values as dicalcium phosphate. Water savings are accomplished in the process by the use of sea water instead of fresh water.
MoreDicalcium-Phosphates- Process, Technology, Applications ...
Dicalcium phosphate crystals are precipitated and after filtration and drying the resulting product is a very pure crystalline dihydrate dicalcium phosphate that is sold as Aliphos® Dical. Dicalcium phosphate is obtained from degreased bones which are demineralised by hydrochloric acid treatment and precipitated by a saturated lime solution.
MoreUS4177052A - Process for preparing dicalcium phosphate ...
There is disclosed a process for preparing fertilizers containing dicalcium phosphate from phosphates of mineral origin by mechanical activation. According to the invention grains larger than 5 mm of the sized or unsized starting phosphate compound of mineral origin are granulated up to a grain size of 1 to 4 mm, the granulated phosphate obtained is admixed with
MoreProduction of dicalcium phosphate by treatment of ...
This paper presents results laboratory experiments to test a new process for manufacture of dicalcium phosphate. The process is based on the nitric acidulation of phosphate rock concentrate, followed by neutralization of the extract liquor with calcium carbonate. The precipitated dicalcium phosphate is then separated from calcium nitrate solution by filtration.
MoreProduction of defluorinated dicalcium phosphate from ...
A new process to produce defluorinated dicalcium phosphate (DCP) using phosphate rock concentrate has been developed. This new process has as main characteristic the low concentration of P 2 O 5 in the liquid phase. The process comprises three main steps: solubilization of the phosphate rock concentrate with sulfuric acid, defluorination of the
More