patent of dicalcium phosphate from rock phosphate

US Patent for Production of dicalcium phosphate orApr 04, 2001· 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 35 and 45 followed by hydrolyzing the solution by diluting it with water to a ratio of.manufacturing process of dicalcium phosphate from rockRock Based Dicalcium Phosphate Why preferred Rock based Dicalcium phosphate? In Rock based Dicalcium Phosphate manufacturing process industry use many type of raw material in which some are proper quality (rock phosphate, sulphuric acid) and some not at proper remark, these mainly bones or only by product of many inorganic or organic reactions.AllAboutFeedDec 01, 2003· At Tessenderlo's phosphate plant in Ham, in northern Belgium, phosphate rock is turned into a very pure dihydrated crystalline dicalcium phosphate This isn't the only method the group uses to make feed phosphat Intimate knowledge of all available phosphates, claim the company's experts, is the secret to good phosphorus nutrition for all species of livestock.Preparation of monocalcium phosphateThe method of preparing monocalcium phosphate which comprises reacting lime with crude phosphoric acid containing iron and fluorine in solution to form a monocalcium phosphate liquor containing fluorine in amount less than about 003% and from about 13% to 16% iron, calculated as FPe203 and having a pH between about 2 and about 3, adding.phosphate rock digestion with hydrochloric acidJul 26, 2016· Phosphate rock shipped from mine, digestion of rock phosphate ? phosphate rock digestion with hydrochloric acid ? gold process for making dicalcium phosphate from rock phosphate dicalcium.Processes for the manufacture of feed grade dicalciumOct 26, 1976· 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 of the dissolution liquor does not exceed 60% and.Leslie R Tate Inventions, Patents and Patent ApplicationsAbstract 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.

Phosphate Minerals

In reality, the existence of 49 known calcium phosphates, 14 magnesium phosphates, 49 aluminum phosphates, and 51 iron phosphates (and some contain one or more of these cations) points to the complexity of the chemistry of phosphate minerals in soils and it is dubious that any fertilizer reaction species or series is more than illustrative.

Rock Based Dicalcium PhosphateWhy preferred Rock based Dicalcium phosphate? In Rock based Dicalcium Phosphate manufacturing process industry use many type of raw material in which some are proper quality (rock phosphate, sulphuric acid) and some not at proper remark, these mainly bones or only by product of many inorganic or organic reactions.WO2004076348A1This 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.Di calcium phosphate by direct acidulation of phosphatedi calcium phosphate by direct acidulation of phosphate rock In general, when phosphate rock is treated with sulfuric acid, mono calcium phosphate or phosphoric acid is formed If less sulfuric acid is used, di calcium phosphate should be formed theoretically, however only mono calcium phosphate and undecomposed phos­ phate rock result in.Dicalcium Phosphate From Rock PhosphateDicalcium 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 °C.innophos Calipharm A (Dicalcium Phosphaterecommendation for uses which infringe valid patents or as extending license under valid patents Particle size 04 % E 341 (ii) This product complies with current European Union Directive No 231/2012 ® (Dicalcium Phosphate, Anhydrous) (2/2) Lead <025 ppm 001 % BSE/TSE No materials of animal origin are used Residual Solvents The.Production of dicalcium phosphate or ,Feb 06, 2001· It also relates to methods for the manufacture of monocalcium phosphate fertilizer, edible monocalcium phosphate and edible dicalcium phosphat 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.THE ECOPHOS PROCESS FOR PRODUCING DIHYDRATEpure dihydrate dicalcium phosphate In the final stage, this precipitate is granulated and dried This Ecophos process has several advantages over classic technology The classic process uses sulphuric acid to dissolve rock phosphate; but, in addition to the P2O5, most of the other chemical elements present in the rock.

THE ECOPHOS PROCESS FOR PRODUCING DIHYDRATE

pure dihydrate dicalcium phosphate In the final stage, this precipitate is granulated and dried This Ecophos process has several advantages over classic technology The classic process uses sulphuric acid to dissolve rock phosphate; but, in addition to the P2O5, most of the other chemical elements present in the rock.

Dicalcium phosphateDicalcium 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 4It is also known as dibasic calcium phosphate or calcium monohydrogen phosphateDicalcium phosphate is used as a food.Dicalcium Phosphate From Rock PhosphateDicalcium 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 °C.PhosphatesPhosphates Production , Technology, Applications, Patent, Consultants, Company Profiles, Reports, Market, Projects , Phosphate rock production rose 15 percent to 168 million tonnes in 2005 The largest producer was China, while the US, Morocco and Former Soviet Union countries also achieved significant volum , Dicalcium Phosphate.US3391992AUS3391992A 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 1964 06 04 Legal status (The legal status is an assumption and is not a legal conclusion.Patents on Phosphate processingThe phosphate has to be solubilized to facilitate absorption by plants The solubilization process is essentially the same as proposed by Liebig for bone phosphate But acid treatment of rock phosphate releases hydrogen fluoride and silicon fluoride.phosphate rock digestion with hydrochloric acidJul 26, 2016· Phosphate rock shipped from mine, digestion of rock phosphate ? phosphate rock digestion with hydrochloric acid ? gold process for making dicalcium phosphate from rock phosphate dicalcium.Dicalcium Phosphates Process, Technology, ApplicationsDicalcium 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.Jan C De Waal Inventions, Patents and Patent ApplicationsProduction of dicalcium phosphate or monocalcium phosphate from calcium phosphate Patent number 6183712 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 ac.