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  • US2728635A Production of feed grade dicalcium

    US2728635A US236886A US23688651A US2728635A US 2728635 A US2728635 A US 2728635A US 236886 A US236886 A US 236886A US 23688651 A US23688651 A US 23688651A US 2728635 A US2728635 A US 2728635A Authority US United States Prior art keywords phosphate solution hydrolysis dicalcium phosphate containing Prior art date 1951-07-16 Legal status (The legal status

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  • US2948590A Process for the manufacture of dicalcium

    US2948590A Process for the manufacture of dicalcium phosphate Google Patents 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

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  • US3391992A Feed grade dicalcium phosphate Google

    patent of dicalcium phosphate from rock phosphate. A PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM PHOSPHATE to produce dicalcium phosphate In the US patent no6183712 in rock phosphate or any Live Chat Us Patent For Manufacturing Process Of Dicalcium Phosphate. Indian Patents 202038A PROCESS FOR THE MANUFACTURE

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  • US4113842A Preparation of dicalcium phosphate from

    A method of preparing dicalcium phosphate from phosphate rock wherein the rock is treated with a mixture of water, carbonyl, and sulfur dioxide. Solids are separated from the liquid phase. The solid phase consists of a mixture of gangue, and calcium α-hydroxysulfonate. Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decomposition.

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  • 「patent of dicalcium phosphate from rock phosphate」

    Dicalcium phosphate Dicalcium phosphate is the calcium phosphate with the formula CaHPO 4 and its dihydrate. The quotdiquot prefix in the common name arises because the formation of the HPO 4&patent of dicalcium phosphate from rock phosphate

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  • Patent Of Dicalcium Phosphate From Rock Phosphate

    Dicalcium Phosphate Patents anreximin patent of dicalcium phosphate from rock phosphate Patents on Phosphate processingbone and, But acid treatment of rock phosphate . READ MORE; US2043238A Manufacture of dicalcium phosphate Process of making dicalcium phosphate from fine phosphate rock, fine dolomite and concentrated phosphoric acid, containing at least 65% by

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  • Patent Of Dicalcium Phosphate From Rock Phosphate

    Dicalcium Phosphate Patents anreximin patent of dicalcium phosphate from rock phosphate Patents on Phosphate processingbone and, But acid treatment of rock phosphate . Get Information; phosphate rock dicalcium . Dicalcium phosphate Wikipedia. Dicalcium phosphate is the calcium phosphate with the formula CaHPO4 and its dihydrate. The "di" prefix

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  • UST962001I4 Preparation of dicalcium phosphate from

    dicalcium phosphate is prepared from phosphate rock by a process which comprises reacting phosphate rock with sulfur dioxide and an organic carbonyl compound for 0.5 to 10 hours while maintaining the temperature of the reaction mixture below 50° C. The reaction yields a mixture of gangue, solid calcium α-hydroxy sulfonate and soluble dicalcium phosphate.

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  • US Patent for Preparation of dicalcium phosphate from

    A method of preparing dicalcium phosphate from phosphate rock wherein the rock is treated with a mixture of water, carbonyl, and sulfur dioxide. Solids are separated from the liquid phase. The solid phase consists of a mixture of gangue, and calcium .alpha.-hydroxysulfonate. Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decomposition.

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  • US1235025A Process of making dicalcium phosphate

    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 keywords calcium making phosphate process dicalcium phosphate Prior art date 1916-05-01 Legal status (The legal status is an

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  • US Patent for Preparation of dicalcium phosphate from

    A method of preparing dicalcium phosphate from phosphate rock wherein the rock is treated with a mixture of water, carbonyl, and sulfur dioxide. Solids are separated from the liquid phase. The solid phase consists of a mixture of gangue, and calcium .alpha.-hydroxysulfonate. Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decomposition.

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  • US Patent # 4,154,799. Dicalcium phosphate manufacture

    Dicalcium phosphate manufacture Abstract. 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.

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  • US Patent for Production of dicalcium phosphate or

    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 phosphate.

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  • Indian Patents. 202038:A PROCESS FOR THE

    Full Text: This 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.

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  • patent of dicalcium phosphate from rock phosphate

    Patent US3988420 Processes for the manufacture of,The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric ac 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 .

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  • 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

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  • Dicalcium phosphate Wikipedia

    Dicalcium phosphate is the calcium phosphate with the formula CaHPO 4 and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO 4 2– anion involves the removal of two protons from phosphoric acid, H 3 PO 4.It is also known as dibasic calcium phosphate or calcium monohydrogen phosphate.Dicalcium phosphate is used as a stone additive, it is found in some

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  • manufacturing process of dicalcium phosphate from rock

    manufacturing process of dicalcium phosphate pdf. us patent for manufacturing process of dicalcium phosphate . Oct 11, 2013 dicalcium phosphate manufacturing process Gold Ore Register or Login To Download This Patent As A PDF United States Patent 4,193,973. MORE Get Quote; Di-calcium phosphate by direct acidulation of phosphate rock

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  • Dicalcium Phosphate From Rock Phosphate Henan

    Dicalcium Phosphate poultry feed grade is an organic weight loss plan of mineral phosphate due to the fact bones meal and meat usually are not allowed in poultry industries. Dicalcium Phosphate makes use of as nutritional complement diets with feed formulations. Most important part of poultry birds required is phosphate and calcium traditional feedstuffs of their diets.

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  • DI-CALCIUM PHOSPHATE PRODUCTION FROM

    The 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 phosphate.

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  • manufacturing process of dicalcium phosphate from rock

    manufacturing process of dicalcium phosphate pdf. us patent for manufacturing process of dicalcium phosphate . Oct 11, 2013 dicalcium phosphate manufacturing process Gold Ore Register or Login To Download This Patent As A PDF United States Patent 4,193,973. MORE Get Quote; Di-calcium phosphate by direct acidulation of phosphate rock

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  • Dicalcium Phosphate Patents

    Dicalcium Phosphate Patents. Dicalcium Phospate, Di-Cal, Precipitated Bonemeal . Mar 26, 2011 · Hey I have not been able to find much information on using Dicalcium Phosphate but a .

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  • Phosphate Rock Or Ore Patents and Patent Applications

    Justia Patents Chemistry Of Inorganic Compounds Patents Treating Mixture To Obtain Metal Containing Compound Patents Alkaline Earth Metal (mg, Ca, Sr, Or Ba) Patents Phosphate Rock Or Ore Patents (Class 423/157.2)

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  • patent of dicalcium phosphate from rock phosphate

    patent of dicalcium phosphate from rock phosphate 2017 Edition statistics.gov.hk hkhs code 8-digit 01012100 c62 unit 01012910 live horses, for racing 01012990 live horses, other than those for pure-bred breeding or racing 01013000

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  • Preparation of dicalcium phosphate from phosphate

    12.09.1978· The prior art teaches that phosphate rock can be converted to dicalcium phosphate by acidulating the rock with an excess of mineral acid to dissolve the P 2 O 5, then neutralizing the excess acid in the separated extract with ammonia, limestone, lime, or other basic material to precipitate dicalcium phosphate. Phosphate rock is the fertilizer

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  • patent of dicalcium phosphate from rock phosphate

    patent of dicalcium phosphate from rock phosphate patent of dicalcium phosphate from rock phosphate. Di calcium phosphate by direct acidulation of phosphate rock. phosphate rock to the filtrate and final separation of di calcium phos phates . In laboratory .

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  • US Patent for Use of dicalcium phosphate anhydride

    The invention relates to dicalcium phosphate anhydride powder, at least 50 wt. % thereof having a particle size of between 45 and 150 μm, a maximum of 50 wt. % having a particle size of <45 μm, and a maximum of 5 wt. % having a particle size of >150 μm. Said powder also exhibits a bulk density of 1000 to 5000 g/l and a specific surface area of <5 m2/g, and is used to directly tablet or

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  • 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.

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  • Negative Effects of Dicalcium Phosphate Livestrong

    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

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  • Use of phosphate rocks for sustainable agriculture

    The principle behind the use of phosphate rock elemental sulphur assemblages (PR/S) is that the inoculated or native population of soil bacteria oxidizes S to H 2 SO 4 when the product is applied to the soil. This acid in turn reacts with the PR particles that are in close proximity to S and forms monocalcium and dicalcium phosphates. Thus, the

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