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Dicalcium phosphate manufacture - United States Gypsum …

What is claimed is: 1. A process for producing dicalcium phosphate from rock phosphate which comprises: (a) Continuously feeding finely divided rock phosphate, sulfuric acid, and sea water to a first mixing zone and mixing them to form a slurry, the quantity of sulfuric acid and sea water charged being about equal to six equivalents of acid per mole of P 2 O 5 content of the rock and about 3% ...

Dicalcium-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.

Dicalcium;phosphate | Ca2O4P+ - PubChem

Dicalcium;phosphate | Ca2O4P+ | CID 21584077 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities ...

Dicalcium phosphate dihydrate having improved stability ...

Dicalcium phosphate dihydrate containing a sufficient amount of trimagnesium phosphate and/or tetrasodium pyrophosphate to inhibit spontaneous hydrolysis and/or decomposition of the dicalcium phosphate dihydrate is widely used as a dental polishing agent with and without added fluoride.

US3391992A - Feed grade dicalcium phosphate - Google Patents

US3391992A US37268664A US3391992A US 3391992 A US3391992 A US 3391992A US 37268664 A US37268664 A US 37268664A US 3391992 A US3391992 A US 3391992A Authority US United States Prior art keywords acid superphosphoric dicalcium phosphate diluted wet Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

WO2004076348A1 - Google Patents

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.

Dicalcium phosphate dihydrate having improved ...

Dicalcium phosphate dihydrate compositions having improved monofluorophosphate compatibility are prepared by reacting a lime slurry with phosphoric acid to form a monocalcium phosphate solution, and then further reacting the monocalcium phosphate solution with additional lime slurry to a pH in the range of from above about 2.2 to below about 5.5.

DICALCIUM PHOSPHATE AND ITS METHOD OF PREPARATION ...

Anhydrous dicalcium phosphate having an assay of at least 90 percent by weight and composed of particles, a major proportion of which have a particle size of from about 0.1 to 1.0 microns and a specific surface area of at least 10 square meters per gram is prepared by adding well dispersed, substantially dry calcium oxide or calcium hydroxide to phosphoric acid having a concentration of from ...

Method for production of diammonium phosphate

Granulated mineral fertilizer contains ammonium nitrate and monoammonium phosphate with total content of digestible P 2 O 5 within a range of 2÷6%, in which case 0.4÷28.6% of P 2 O 5 is present in the form of dicalcium phosphate.

US4828823A - Dicalcium phosphate ... - Google Patents

The monofluorophosphate compatibility of dicalcium phosphate dihydrate can be improved in processes in which a slaked lime slurry is reacted with phosphoric acid to form a monocalcium phosphate solution to which is added magnesium oxide, additional lime slurry and pyrophosphoric acid with later removal of the dicalcium phosphate dihydrate.

dicalcium phosphate - Uses, DMF, Dossier, Manufacturer ...

dicalcium phosphate DMF, CEP, Written Confirmations, FDF, Prices, Patents, Patents & Exclusivities, Dossier, Manufacturer, Licensing, Distributer, Suppliers, News ...

PHARMACEUTICAL COMPOSITIONS DIRECTLY TARGETING …

Embodiments of the current invention include methods and compositions for regulating the activity of hormone receptors.

Prophylactic dental paste comprising dicalcium phosphate ...

Patent: Publ. of Application without search report - European Patent Office. Application: EP on . Publication: . Abstract. A prophylactic dental paste for professional use containing at least 60 percent by weight of dicalcium phosphate, (which may be anhydrous dicalcium phosphate, dicalcium phosphate dihydrate or ...

US Patent for Production of dicalcium phosphate or ...

A process is provided for the production of dicalcium phosphate form a phosphate source material in which a solution of phosphoric acid is produced by the action of a suitable mineral acid, generally sulphuric acid, on a phosphate source material. Calcium fluoride is precipitated at a pH of between 3.5 and 4.5 followed by hydrolyzing the solution by diluting it with water to a ratio of ...

Negative Effects of Dicalcium Phosphate | Livestrong.com

Dicalcium phosphate is a calcium supplement commonly found in prepared breakfast cereals, in pharmaceuticals as an inert ingredient to bind tablets, and in toothpastes. However, too much dicalcium phosphate, or dicalcium phosphate taken in conjunction …

Method of producing dicalcium phosphate feed

A method of obtaining forage dicalcium phosphate, including the processing of phosphogypsum phosphoric acid in the presence of calcium hydroxide or sodium at pH 7-11 and concentration of P 2 O 5 0,7-2,752 g/l to equilibrium (AS the USSR №829559, C01 …

feed additives feilimei powder used for ducks quality

China High Quality Humate Powder for Animal Feed . They can also be used as potential fluid loss additives in certain types of organic liquids to prevent seepage from lagoons or pit containment areas.

Indian Patents. 202038:A PROCESS FOR THE MANUFACTURE OF ...

Dicalcium phosphate known, as DCP is a commonly used animal feed supplement and it is desirable to obtain dicalcium phosphate free of contaminants, particularly fluoride containing compounds. Feed grade dicalcium phosphate has a chemical formula CaH PO4 2H2O wherein phosphorus expressed as P is 18% and calcium expressed as Ca is at least 23%.

Product Information DICALCIUM PHOSPHATE, ANHYDROUS …

infringe valid patents or as extending license under valid patents. Product Information DICALCIUM PHOSPHATE, ANHYDROUS USP/FCC GRADE DESCRIPTION Dicalcium Phosphate, Anhydrous is a white, odorless, tasteless powder. It is stable in air. European Pharmacopoeia (EP 3rd ed.) Certificates of Analysis are available on request.

Dicalcium Phosphate Benefits, Side Effects and Dosage

Aug 28, 2020· Dicalcium Phosphate Dosage. Dicalcium phosphate supplements are available as pills, capsules and in complexes for bone support. You can also take dicalcium phosphate powder. As a dietary supplement, take 2,000 mg (rounded 1/2 tsp) once or twice daily, or as directed by your physician. Dicalcium phosphate powder has a chalky taste.

US Patent for Preparation of dicalcium phosphate from ...

Bridger (U.S. Letters Patent No. 3,011,888) shows that dicalcium phosphate may be prepared, without the use of excess acid, by treating phosphate rock with water and phosphoric acid, curing the product (principally monocalcium phosphate and phosphate rock) at room temperature for several days, mixing it with more water and hydrolyzing the ...

Dicalcium phosphate dihydrate for fluoride dentifrice ...

The monofluorophosphate compatibility of dicalcium phosphate dihydrate can be improved in processes in which a slaked lime slurry is reacted with phosphoric acid to form a monocalcium phosphate solution to which is added magnesium oxide, additional lime slurry and pyrophosphoric acid with later removal of the dicalcium phosphate dihydrate. The improvement involved adding the …

GB782177A - Dicalcium phosphate - Google Patents

Fluoride is removed in the preparation of dicalcium phosphate from wet process phosphoric acid by neutralizing the acid with an alkaline compound of calcium, e.g. lime or calcium carbonate, to a pH range 2.9-3.1; removing the precipitate, which is mainly fluoride; and then neutralizing the residual acid to precipitate dicalcium phosphate.

Manufacture of dicalcium phosphate and alkali salts ...

The method of producing dicalcium phosphate and sodium nitrate from phosphate rock containing fluorine which comprises reacting the phosphate rock with nitric acid in the presence of sufficient silica for precipitating as silicofluoride substantially all of the fluorine present in the rock in the presence of an excess of alkali metal nitrate ...

Dicalcium phosphate dihydrate with improved stability ...

United States Patent 4244931 . Abstract: Dicalcium phosphate dihydrate containing a sufficient amount of trimagnesium phosphate and/or tetrasodium pyrophosphate to inhibit spontaneous hydrolysis and/or decomposition of the dicalcium phosphate dihydrate is widely used as a dental polishing agent with and without added fluoride. Now it has been ...

US2287699A - Stabilized dicalcium phosphate - Google Patents

dicalcium phosphate pyrophosphate precipitate mother liquor alkali metal 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 - Lifetime Application number US319108A Inventor ...

consultant of di calcium phosphate - BINQ Mining

Dicalcium Phosphate – Xi'an Haotian Bio-engineering Technology … Dicalcium phosphate is a kind of food additives which has been widely used in food industry as an Anti-coagulating agent, leavening agent, dough improver, … »More detailed

Dicalcium Phosphate (Animal Origin)

Dicalcium Phosphate (Animal Origin) Regardless of the species of origin, all animal origin dicalcium phosphate must be certified as being: "Dicalcium phosphate with no trace of fat or protein." Exporters should present laboratory reports showing that each lot to be exported has been tested and shown to have no trace of fat or protein.

Dicalcium phosphate - YouTube

Dicalcium phosphate, also known as dibasic calcium phosphate or calcium monohydrogen phosphate, is a type of calcium phosphate that is dibasic. It is usually...