patent of dicalcium phosphate from rock phosphate

Production of defluorinated dicalcium phosphate from phosphate rock concentrate. A.M.B. Freitas and ; M. Giulietti Patent 9.105.182-7. Legal CC and Myrick Jr. OD. Di-calcium phosphate by direct acidulation of phosphate rock phosphate rock to the filtrate and final separation of di-calcium phos phates .

Preparation of dicalcium phosphate from phosphate

Bridger (U.S. 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

Production of dicalcium phosphate Seyfried, Warren R.

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

Dicalcium phosphate manufacture United States

What is claimed is: 1. A process for producing dicalcium phosphate from rock phosphate which comprises: (a) Continuously feeding finely divided rock phosphate, sulfuric acid, and sea water to a first mixing zone and mixing them to form a slurry, the quantity of sulfuric acid and sea water charged being about equal to six equivalents of acid per mole of P 2 O 5 content of the rock and about 3%

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.

Paten Dicalcium Phosphate Fundusze Luksemburg

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. Dapatkan Dukungan » dicalcium phosphate patents. The dicalcium phosphate product is screened and dried

Production of dicalcium phosphate or monocalcium

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) treating the solution with suitable alkaline, calcium material

manufacturing production unit of dicalcium

Dicalcium phosphate manufacture through hcl route improved process for the manufacture for dicalcium phosphate animal feed grade using mineral acid hydrochloric acid nitric acid process in details manufacturing process of dicalcium phosphate using h2so4 m,Design of dicalcium phosphate

US6183712B1 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.

Processes for the manufacture of feed-grade

The 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

Dicalcium phosphate manufacture United States

What is claimed is: 1. A process for producing dicalcium phosphate from rock phosphate which comprises: (a) Continuously feeding finely divided rock phosphate, sulfuric acid, and sea water to a first mixing zone and mixing them to form a slurry, the quantity of sulfuric acid and sea water charged being about equal to six equivalents of acid per mole of P 2 O 5 content of the rock and about 3%

us patent for manufacturing process of dicalcium

Process for the production of granulated dicalcium phosphate . A process for the production of granulated dicalcium phosphate dihydrate from finegrained, powdered dicalcium phosphate dihydrate, comprising the steps of: dry mixing about 80 to 95% of dicalcium phosphate dihydrate with a grain size of less than about 120 m and 20 to 5% of calcium hydroxide with a grain size of less than about 120 m

A PROCESS FOR THE MANUFACTURE OF FEED GRADE

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 is 18% and calcium expressed as Ca is at least 23%.

manufacturing production unit of dicalcium

Dicalcium phosphate manufacture through hcl route improved process for the manufacture for dicalcium phosphate animal feed grade using mineral acid hydrochloric acid nitric acid process in details manufacturing process of dicalcium phosphate using h2so4 m,Design of dicalcium phosphate

clean process for production of defluorinated

patented for thermal phosphate recovery process, US Patent # 4,524,054 Process for the production of dicalcium,Process for the,patent of dicalcium phosphate from rock

(PDF) United States Patent [191 Anderson Medina

For the acidulation of phosphate rock (28% for the manufacture of dicalcium phosphate (hereinaf P205), the concentration of aqueous hydrochloric acid . ter referred to as DCP) and for the manufacture of suitable for the process is around 22% (by weight), pure phosphoric acid.

Production of defluorinated dicalcium phosphate from

A 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 P2O5 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 and

dcp process through rock phosphate Mining

Processes for the manufacture of feed-grade dicalcium phosphate . Oct 26, 1976 · According to this process, phosphate rock is acidulated from the rock phosphate the desired amount of DCP and the column through a »More detailed

Dicalcium phosphate process consultants in india

Chinese deginer for di calcium phosphate process . dicalcium phosphate chemical process consultants in india ARMACOCPS earlier Armaco Chemical Process Systems is an international process design and engineering firm providing specialized engineering services to industries related to Phosphates, Oleochemicals, Soaps Detergents and Specialty chemicals Patent US7101522 Production of

Method of granulating the fine phosphate rock

The problem is solved in a method of granulating the fine phosphate rock in the presence of a binder additive that when granulation as a binder additive, a mixture of the pulp of phosphate and the amount of salt ž oxides (such as iron, aluminum and others) when the ratio of monocalcium phosphate : the sum of the single salts oxides equal to 1

clean process for production of defluorinated

patented for thermal phosphate recovery process, US Patent # 4,524,054 Process for the production of dicalcium,Process for the,patent of dicalcium phosphate from rock

A PROCESS FOR THE MANUFACTURE OF FEED GRADE

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 is 18% and calcium expressed as Ca is at least 23%.

manufacturing production unit of dicalcium

Dicalcium phosphate manufacture through hcl route improved process for the manufacture for dicalcium phosphate animal feed grade using mineral acid hydrochloric acid nitric acid process in details manufacturing process of dicalcium phosphate using h2so4 m,Design of dicalcium phosphate

(PDF) United States Patent [191 Anderson Medina

For the acidulation of phosphate rock (28% for the manufacture of dicalcium phosphate (hereinaf P205), the concentration of aqueous hydrochloric acid . ter referred to as DCP) and for the manufacture of suitable for the process is around 22% (by weight), pure phosphoric acid.

brp rock phosphate process ecopub.be

The effects of replacing dicalcium phosphate with Three hundred, day-old broiler chicks, with an average initial weight of 41.8 +/- 1.79 g, were used in a 15-day study (10 birds per battery cage) to characterize their performance and fluorine status when dicalcium phosphate (DCP) was replaced by Busumbu rock phosphate (BRP) as the source of phosphorus in the chicks' ration.

Method of phosphate ore processing Patent search,

The separated aqueous phase containing phosphate ions, calcium and chloride coming from the separator device 6 to line 12, is directed into the tank 13 subsequent neutralization, where the precipitated dicalcium phosphate DCP by introducing into the liquid phase through the pipeline 14 neutralizing agent of the type that was specified above

dcp process through rock phosphate Mining

Processes for the manufacture of feed-grade dicalcium phosphate . Oct 26, 1976 · According to this process, phosphate rock is acidulated from the rock phosphate the desired amount of DCP and the column through a »More detailed

Availability of phosphorus in dicalcium phosphates

In 6 trials with beef bullocks of liveweights ranging from 181 to 397 kg apparent and true digestibilities of P from 3 sources, USP grade dicalcium phosphate, feed grade dicalcium phosphate and defluorinated rock phosphate were estimated. Retention and excretion of P in urine were not estimated because only 1.0% of the P was excreted in the urine.

Dicalcium Phosphate Nexchem

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China Polifar 18% DCP Dicalcium Phosphate Feed

DCP, Dicalcium Phosphate Powder, Dicalcium Phosphate manufacturer / supplier in China, offering Polifar 18% DCP Dicalcium Phosphate Feed Grade Dicalcium Phosphate Powder Feed Additive, High Quality Vitamin E Oil with Famiqs and FDA, High Quality