climax process for production of potassium phosphate. Process of producing phosphates and phosphoric acid . United States Patent 4154800 . Abstract A further object is to provide an improved process for the production of a fertilizer from phosphate rock or bone phosphate. 2018· production of sudan phosphate phosphorus ore production line manufacturing process of dicalcium phosphate
Rock phosphates and bone ash are natural ... Phosphoric acids which are obtained on acidification of natural phosphates are purified and then neutralized to produce dicalcium phosphate. In the US patent no.6183712 a process ... This figure also shows utilization of wash water in a continuous process of producing dicalcium phosphate ...
US-3634029-A chemical patent summary.
The present invention relates to a cyclic process for continuous production of dicalcium phosphate from rock phosphate. Rock phosphate is treated with excess of spent acid or weak sulphuric acid under agitation. The slurry obtained is filtered and the filter cake is recycled for further leaching.
patent of dicalcium phosphate from rock phosphate. US852372AMethod of producing dicalcium phosphate . US852372A US207423A USA US852372A US 852372 A US852372 A US 852372A US 207423 A US207423 A US 207423A US A US A US A US 852372 A US852372 A US 852372A Authority US United States Prior art keywords dicalcium phosphate method phosphate acid solution Prior art …
Production of dicalcium phosphate or Free Patents Online. The invention claimed is: 1 A process for the production of dicalcium phosphate from a phosphate source material comprising the steps of: (a) preparing a solution of phosphoric acid by the action of a suitable mineral acid on a phosphate source material; (b) optionally separating the solution from residual solid materials; and (c ...
Process for the production of dicalcium phosphate . United States Patent 4524054 . Abstract: A process for the recovery of phosphate values from a phosphate ore, wherein the ore is leached with a mixture comprising water, sulphur dioxide and an organic carbonyl compound; the leach liquor ...
Method for preparation of dicalcium phosphate * Cited by examiner. Referenced by. Citing Patent. patent production of dicalsium phosphate from . patent production of dicalsium phosphate from ash in Denmark. ... In 2001, Jan de Waal was awarded patents in for a new innovative dicalcium ... Patents - Google Books
Dec 08, 2012· > Ore Process > di calcium phosphate production Patent US7101522 – to a cyclic process for continuous production of dicalcium phosphate from rock Get Price 4.9/5(3.1K)
The prototype of the claimed invention is a method of producing dicalcium phosphate /patent RF №2411222, publ. 10.02.2011, application No. 2009109920/includes mixing phosphoric acid with limestone at 60-80°C bereturned with subsequent maturation and drying of the product flue gases at 120-145°C. to a residual moisture content of 1.5-2.5%, characterized in that the mixture of lead in two ...
Monocalcium phosphate production process. FIELD: industrial inorganic synthesis. SUBSTANCE: monocalcium phosphate, widely applied in agriculture, is prepared by mixing extraction phosphoric acid with calcium-containing component followed by granulation and drying of product. During mixing of components, appropriate temperature and moisture are ...
US Patent # 4,710,219. Production method of combined phosphorus … Production method of combined … The reaction product of phosphate rock and hydrochloric acid is dicalcium phosphate … "A method for producing fertilizers from wood ashes and …
Production of dicalcium phosphate or monocalcium phosphate from calcium phosphate . United States Patent 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 acid. The calcium salt may then ...
patent of dicalcium phosphate from rock phosphate_Trace Mineral Trace Mineral Suppliers and Manufacturers at .17.0% 18.0% DCP Dicalcium phosphate Feed Grade Minerals amp Trace Elements National patent products w Chat Now Preparation of monocalcium phosphate and/or phosphoric. Get Price; US Patent for Production of dicalcium phosphate or ...
A process is disclosed for the production of granulated dicalcium phosphate dihydrate from fine-grained, powered dicalcium phosphate dihydrate, wherein 80 t0 95% of dicalcium phosphate dihydrate with a grain size of less than 120 .mu.m and 20 to 5% of calcium hydroxide with a grain size of less than 120 .mu.m are dry mixed and continuously sprayed and granulated in a fluidized bed with 20 …
07-09-2004· 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.
METHOD OF DICALCIUM PHOSPHATE PRODUCING Russian patent published in 1994 - IPC Abstract RU 2023658 C1. FIELD: chemical technology. SUBSTANCE: dicalcium phosphate is prepared by treatment of nitratephosphate solution with ammonium at the two stages. At the first stage pH is brought about to 2.5-4.0, ...
patent of dicalcium phosphate from rock phosphate. US2636806A 1953-04-28 Acidulation of phosphate rock 2003-08-28 Production of dicalcium phosphate or monocalcium phosphate. Get price EcoPhos Integrates Veolia''s HPD® Evaporation Technology into its . Get Price; manufacturing process of dicalcium phosphate pdf
US Patent # 7,201,885. Method of removing heavy metals ... The calcium phosphate, such as hydroxyapatite, dicalcium phosphate, and tricalcium phosphate, preferably dicalcium phosphate, is added to the reactor in an amount of about 0.1% to about 20%, preferably from about 0.5% to about 10%, and more preferably from about 1% to about 5% based on the weight of the sand used.
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.
25-08-1999· 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 dicalcium phosphate.
United States Patent 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 acid. The calcium ...
US-6183712-B1 chemical patent summary.
Di-calcium 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 dibasic sodium phosphate with calcium chlorid. The'present method is simpler than either of …