patent of dicalcium phosphate from rock phosphate

  • US Patent for Preparation of dicalcium phosphate from

    Bridger (US 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 monocalcium phosphate to dicalcium phosphate and phosphoricThe process for producing calcium phosphate from phosphoric rocks with a low content of P2O5 and a high content of calcite consists in treating said rocks with a sufficient amount of nitric acid in order to transform insoluble calcium carbonate into soluble calcium nitrate, and insoluble calcium phosphates into soluble calcium phosphates such as phosphoric acid and mono calcium phosphateDICALCIUM PHOSPHATE PRODUCTION FROMAug 25, 1999 A method of producing dicalcium phosphate from calcium phosphate includes reacting the calcium phosphate with a mineral acid such as sulphuric acid to produce a calcium salt and phosphoric acid The calcium salt may then be hydrolyzed to form a calcium alkali which may then be reacted with the phosphoric acid to produce dicalciumUS Patent for Production of dicalcium phosphate or

  • USA Process of making dicalcium phosphate

    Dicalcium phosphate is usually prepared by the action of a sulfuric or phosphoric acid upon phosphate rock or other insoluble calcium phosphates, and also by the double decomposition of dibasicUSB1 Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate Google Patents A method of producing dicalcium phosphate from calcium phosphate includes reactingUSB1 Production of dicalcium phosphate orThe 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 liquor does not exceed 60% and that in the clear solution feed grade dicalcium phosphate is precipitated with calcium hydroxide, calcium carbonate or mixtures thereofProcesses for the manufacture of feedgrade dicalcium

  • Production of dicalcium phosphate or monocalcium

    A method of producing dicalcium phosphate from calcium phosphate includes reacting the calcium phosphate with a mineral acid such as sulphuric acid to produce a calcium salt and phosphoric acid The calcium salt may then be hydrolyzed to form a calcium alkali which may then be reacted with the phosphoric acid to produce dicalcium phosphateA 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 phosphoric acid solution with potassium sulfate andProduction of defluorinated dicalcium phosphate fromThis invention relates to a process for the manufacture of feed grade dicalcium phosphate 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 isIndian Patents :A PROCESS FOR THE

  • Dicalcium phosphate by direct acidulation of phosphate

    dicalcium phosphate by direct acidulation of phosphate rock In general, when phosphate rock is treated with sulfuric acid, monocalcium phosphate or phosphoric acid is formed If less sulfuric acid is used, dicalcium phosphate should be formed theoretically, however only monocalcium phosphate and undecomposed phos­ phate rock result in practiceThe process for producing calcium phosphate from phosphoric rocks with a low content of P2O5 and a high content of calcite consists in treating said rocks with a sufficient amount of nitric acid in order to transform insoluble calcium carbonate into soluble calcium nitrate, and insoluble calcium phosphates into soluble calcium phosphates such as phosphoric acidDICALCIUM PHOSPHATE PRODUCTION FROMThe prototype of the claimed invention is a method of producing dicalcium phosphate /patent RF №, publ 10022011, application No /includes mixing phosphoric acid with limestone at 6080°C bereturned with subsequent maturation and drying of the product flue gases at 120145°C to a residual moisture content of 1525%, characterized in that the mixture ofMethod of producing dicalcium phosphate

  • Dicalcium Phosphate From Rock Phosphate 3imimg

    Dicalcium Phosphate From Rock Phosphate Dicalcium phosphate, also known as calcium monohydrogen phosphate, is a dibasic calcium phosphate •Dicalcium phosphate is usually found as the dihydrate, but it can be thermally converted to the anhydrous form It is practically insoluble in water, with a solubility of 002 g per 100 mL at 25 °CA 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 theProduction of defluorinated dicalcium phosphate fromphate and undecomposed phosphate rock is obtained instead of dicalcium phosphate The purpose of this research was to find a method of produc­ ing dicalcium phosphate Reaction 2 is very difficult to effect Phosphate rock so treated always contains a high percentage of undecomposed rock, even after a relatively long timeDicalcium phosphate by direct acidulation of phosphate

  • Product Information DICALCIUM PHOSPHATE,

    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 requestPotentially harmful phosphatebased products derived from the wet acid digestion of phosphate rock represent one of the most serious problems facing the phosphate industry This is particularly true for dicalcium phosphate (DCP), a food additive produced from either sulphuric acid or hydrochloric acRadioactivity Contents in Dicalcium Phosphate and theAs a Rock Phosphate Wholesale Manufacturer, we feel that the production process makes a big difference The most common form of manufacturing is called the ‘wet acid’ method In this method, the rock phosphate is made to react with concentrated Sulphuric Acid This releases phosphoric acid, which is further processed and then cleansedRock Based Dicalcium Phosphate Manufacturer, Supplier

  • Replacement of dicalcium phosphate by rock phosphate in

    Replacement of dicalcium phosphate by rock phosphate did not affect (P>005) ruminal ammonia concentration that was also quadratic; however, regression equation had a low determination coefficient (r 2) showing that the curve had a variation in their data Ruminal ammonia concentration also showed a quadratic response in relation to timeHowever, phosphate rock acidinsoluble residue is produced during this process as a new type of solid waste, which had a high potential for recycling For process reasons, this type of residue still contains a certain amount of fluorine and phosphorus, which has a massive impact on the potential uses of phosphate rock acidinsoluble residueExisting form and distribution of fluorine and phosphorusThe process for producing calcium phosphate from phosphoric rocks with a low content of P2O5 and a high content of calcite consists in treating said rocks with a sufficient amount of nitric acid in order to transform insoluble calcium carbonate into soluble calcium nitrate, and insoluble calcium phosphates into soluble calcium phosphates such as phosphoric acid and mono calcium phosphateDICALCIUM PHOSPHATE PRODUCTION FROM

  • Method of producing dicalcium phosphate

    The prototype of the claimed invention is a method of producing dicalcium phosphate /patent RF №, publ 10022011, application No /includes mixing phosphoric acid with limestone at 6080°C bereturned with subsequent maturation and drying of the product flue gases at 120145°C to a residual moisture content of 1525%, characterized in that the mixture of lead in twoinfringe 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 requestProduct Information DICALCIUM PHOSPHATE,Processes for the manufacture of feedgrade dicalcium phosphate 26 Oct 1976 The process comprises the reaction of an excess of phosphate rock with aqueo Download PDF PDF help US Patent , Process for the manufacture of dicalcium phosphate, May, 1962, Strauchen et al »More detailedmanufacturing process of dicalcium phosphate pdf «

  • Dicalcium phosphate by direct acidulation of phosphate

    phate and undecomposed phosphate rock is obtained instead of dicalcium phosphate The purpose of this research was to find a method of produc­ ing dicalcium phosphate Reaction 2 is very difficult to effect Phosphate rock so treated always contains a high percentage of undecomposed rock, even after a relatively long timeManufacturer of Dicalcium Phosphate Dicalcium Phosphate Bone Based And Rock Base offered by Ratnadeep Chemicals Supplier, Pune, MaharashtraDicalcium Phosphate Dicalcium Phosphate Bone BasedReplacement of dicalcium phosphate by rock phosphate did not affect (P>005) ruminal ammonia concentration that was also quadratic; however, regression equation had a low determination coefficient (r 2) showing that the curve had a variation in their data Ruminal ammonia concentration also showed a quadratic response in relation to timeReplacement of dicalcium phosphate by rock phosphate in

  • Dicalcium Phosphate Process Flow Diagram Lane Yoga

    Rock phosphate ball mill flow chart amawheelies florida phosphate rock beneficiation process with flowdiagram arrmaz products l p winter haven fl phosphate beneficiation process using polymers as slime flocculants process for production of phosphate rock slurries having reduced 4 is a conceptual flow chart of theRead the restA new process for the production of defluorinated dicalcium phosphate using phosphate rock was developed This new process has the main characteristic of being clean, without the production of any liquid waste The process has essentially three main steps: phosphate rock digestion, defluorination and neutralizationClean process for the production of defluorinated8 Dicalcium phosphate 34 – 38 do 340 9 Fused tricalcium phosphate 28 do 10 Rhenania phosphate 23 – 26 do 11 Raw bone meal 20 – 25 Insoluble NA 12 Steamed bone meal 22 – 25 do NA 13 Rock phosphate 30 – 40 do NA 1Rock phosphate10 P fertilizers – rock phosphate – bone meal – basic slag

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