patent of dicalcium phosphate from rock phosphate

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USA 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 αhydroxysulfonate Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decompositionJustia Patents Orthophosphate (eg, Calcium Hydroxyapatite) US Patent for Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate Patent (Patent # 6,183,712) Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate Aug 25, 1999US Patent for Production of dicalcium phosphate or Google Patents The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acidUSA Processes for the Google PatentsA 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 35 and 45 followed by hydrolyzing the solution by diluting it with water to a ratio of US Patent for Production of dicalcium phosphate or A process of producing dicalcium phosphate which comprises digesting phosphate rock with sulphuric acid of 25% to 40% strength, the acid employed being 1% to 5% in excess of the amount calculated to liberate the P2Os content of the rock as H3P04, filtering the resulting solution of45 phosphoric and sulphuric acids, adding to the solution ground Production of dicalcium phosphate Seyfried, Warren R

USA Production of feed grade dicalcium phosphate

In my patent application Serial No 4,887 referred to above, a cyclic method is described for producing dicalcium phosphate from phosphate rock in which monocalcium phosphate is formed as anThe 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 liquor does not exceed 60% and Processes for the manufacture of feedgrade dicalcium 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 WOA1 Google Patentscalcium phosphate phosphate phosphoric acid calcium mono 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 USA Inventor Harry A CurtisManufacture of dicalcium phosphate Google PatentsDicalcium 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%Indian Patents :A PROCESS FOR THE MANUFACTURE OF

Preparation of dicalcium phosphate from phosphate rock by

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 A process of producing dicalcium phosphate which comprises digesting phosphate rock with sulphuric acid of 25% to 40% strength, the acid employed being 1% to 5% in excess of the amount calculated to liberate the P2Os content of the rock as H3P04, filtering the resulting solution of45 phosphoric and sulphuric acids, adding to the solution ground Production of dicalcium phosphate Seyfried, Warren RSYNTHESIS OF DICALCIUM PHOSPHATE USED AS FEED ADDITIVE FOR ANIMALS FROM PHOSPHATE ROCK AS POTENTIAL COSTEFFECTIVE RAW MATERIAL(PDF) SYNTHESIS OF DICALCIUM PHOSPHATE USED AS FEED It also relates to methods for the manufacture of monocalcium phosphate fertilizer, edible monocalcium phosphate and edible dicalcium phosphates BACKGROUND OF THE INVENTION Tricalcium orthophosphate, Ca 3 (PO 4) 2, commonly known as calcium phosphate, occurs in nature as rock phosphate ore, for example and is used as such as a source of Production of dicalcium phosphate or monocalcium phosphate The improved process for producing from phosphate rock an animal feed ingredient containing at least 40% of P20a, at least 90% of which is in the form of tricalcium (ortho) phosphate, and containing an amount of fluorine not more than about 1/300 of the PO05 content, which comprises grinding the rock to not less than about 60 mesh, mixing with Manufacture of defluorinated tricalcium phosphate INT

Radioactivity Contents in Dicalcium Phosphate and the

Potentially 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 ac 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 4patent of dicalcium phosphate from rock phosphate Dapatkan Dukungan » dicalcium phosphate patents The dicalcium phosphate product is screened and dried Paten Dicalcium PhosphateFIELD: chemistry SUBSTANCE: method of phosphate ore processing includes onestep counterflow process of phosphate ore decomposition, characterised by P 2 O 5 content exceeding 20% in weight, by processing it with water solution of hydrochloric acid, which has HCl concentration lower than 10% in weight, with formation of processing solution, consisting of water phase, in which calcium Method of phosphate ore processingProcesses 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 « MiningDicalcium 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 of undesirable elements, this phosphoric acid isDicalciumPhosphates Process, Technology, Applications

dicalcium phosphate equipment production process

production process dicalcium phosphate from herbal extracts HGT Gyratory Crusher production process dicalcium phosphate from herbal The Production of Calcium Phosphate from Natural Raw The conditions of the preparation of mono dicalcium phosphate and mixtures by crystallization and separation of the crystals from the mother liquid which is circulated during the stage of phosphate rock Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate Patent number: Abstract: 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 acidJan C De Waal Inventions, Patents and Patent Applications The invention relates to methods of obtaining lokalitetot, widely used in agriculture A method of obtaining orthopedically onedeputizing, including evaporation of phosphoric acid to the content of P 2 About 5 6567,5%, followed by neutralization of its calcium carbonate The initial molar ratio of Cao/R 2 About 5 equal (0,951,0):1 The resulting mass is crushed to particle size of not more Monocalcium phosphate production processAug 13, 2013 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 Acid Treatment Patents (Class 423/1573)Acid Treatment Patents and Patent Applications (Class 423 It also relates to methods for the manufacture of monocalcium phosphate fertilizer, edible monocalcium phosphate and edible dicalcium phosphates BACKGROUND OF THE INVENTION Tricalcium orthophosphate, Ca 3 (PO 4) 2, commonly known as calcium phosphate, occurs in nature as rock phosphate ore, for example and is used as such as a source of Production of dicalcium phosphate or monocalcium phosphate

Jan C De Waal Inventions, Patents and Patent Applications

Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate Patent number: Abstract: 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 acidA 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 Production of defluorinated dicalcium phosphate from 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 4patent of dicalcium phosphate from rock phosphate Dapatkan Dukungan » dicalcium phosphate patents The dicalcium phosphate product is screened and dried Paten Dicalcium PhosphateA PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM PHOSPHATE In the US patent no a process wherein calcium phosphate is reacted with a mineral acid Dicalcium phosphate on a dry basis 638g P content of DCP dry process of manufacturing di calcium phosphateProcesses 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 « Mining

chlorophosphate process for dicalcium phosphate

us patent for manufacturing process of Process for the production of granulated dicalcium, Apr 28, 1992 A process is disclosed for the production of granulated dicalcium phosphate dihydrate from finegrained, powered dicalcium phosphate dihydrate, wherein 80 t0 95% of dicalcium phosphate dihydrate with a grain size of less than 120 μm and 20 to 5% of calcium hydroxide with a grain size Aug 13, 2013 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 Acid Treatment Patents (Class 423/1573)Acid Treatment Patents and Patent Applications (Class 423 process for making dicalcium phosphate from rock phosphate Copper Mill Scale AlibabaCopper Mill Scale, Wholesale Various High Quality Copper Mill Scale Products from Global Copper Mill Scale Suppliers and Copper Mill Scale Factory,Importer,Exporter at Aliba;process for making dicalcium phosphate from rock phosphateThe invention relates to methods of obtaining lokalitetot, widely used in agriculture A method of obtaining orthopedically onedeputizing, including evaporation of phosphoric acid to the content of P 2 About 5 6567,5%, followed by neutralization of its calcium carbonate The initial molar ratio of Cao/R 2 About 5 equal (0,951,0):1 The resulting mass is crushed to particle size of not more Monocalcium phosphate production processDICalcium phosphate Ca2O4P+ CID structure, chemical names, physical and chemical properties, classification, patents, literature, biological DICalcium phosphate Ca2O4P+ PubChem

rock phosphate manufactures algeria

[ protected] 27 Division, mirpur12, pallbi Home; Products; About; solotion; Contact; rock phosphate manufactures algeria Home; product; rock phosphate Abstract: Purified diammonium phosphate is produced by neutralizing relatively pure melamine orthophosphate, prepared from wetprocess phosphoric acid, with ammonia in a hot solution of diammonium phosphate to give a slurry of melamine in concentrated diammonium phosphate solution The liberated melamine is virtually insoluble in concentrated diammonium phosphate solutions; it is John F McCullough Inventions, Patents and Patent

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