patent of dicalcium phosphate from rock phosphate

patent of dicalcium phosphate from rock phosphate

US Patent for Dicalcium phosphate manufacture

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. Water savings are accomplished in the process by the use of sea water instead of fresh water.

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US4113842A - Preparation of dicalcium phosphate

US4113842A - Preparation of dicalcium phosphate from phosphate rock by the use of sulfur dioxide, water, and carbonyl compounds - Google Patents

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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 monocalcium phosphate to dicalcium phosphate and phosphoric acid

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DI-CALCIUM PHOSPHATE PRODUCTION FROM

2004-9-7  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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Dicalcium phosphate manufacture - United States

This invention relates to an improved process for the recovery of dicalcium phosphate from phosphate rock or ore. Various wet processes for producing phosphoric acid by acid treating phosphate rock have been described in the literature, such as in Phosphoric Acid edited by A. B. Slack (Marcel Dekker, Inc., New York, 1968).

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US Patent for Production of dicalcium phosphate or ...

1999-8-25  Aug 25, 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 ...

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Process For Making Dicalcium Phosphate From Rock

Patent Of Dicalcium Phosphate From Rock Phosphate Process of making dicalcium phosphate from fine phosphate rock, fine dolomite and concentrated phosphoric acid, containing at least 65 by weight of H3PO4, which comprises, reacting the fine phosphate rock with a suificient quantity of the concentrated phosphoric acid to form monocalcium phosphate making a slurry of

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producing granulated dicalcium phosphate by rock

patent of dicalcium phosphate from rock phosphate, patent of Process for producing plant africa. dicalcium phosphate manufacturing process . manufacture process of dicalcium phosphate from hcl. manufacture process of dicalcium phosphate from hcl XSM

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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.

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Di-calcium phosphate by direct acidulation of phosphate

2020-10-13  phate and undecomposed phosphate rock is obtained instead of di-calcium phosphate. The purpose of this research was to find a method of produc­ ing di-calcium phosphate. Reaction 2 is very difficult to effect. Phosphate rock so treated always contains a high percentage of undecomposed rock, even after a relatively long time.

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patents of preparation of dcp from rock phosphate

Patent US4113842. A method of preparing dicalcium phosphate from phosphate rock for PREPARATION OF DICALCIUM PHOSPHATE FROM Patent No 3 427 124 react phosphate rock...

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Preparation of dicalcium phosphate from phosphate

US-T962001-I4 chemical patent summary.

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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 4patent of dicalcium phosphate from rock phosphate. Dapatkan Dukungan » dicalcium phosphate patents. The dicalcium phosphate product is screened and dried ...

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process for making dicalcium phosphate from rock

patent of dicalcium phosphate from rock phosphate. Processes for the manufacture of feed-grade dicalcium Oct 26 1976 The combined process of DCP manufacture and phosphoric acid production minimizes any losses of P 2 O 5 normally encountered in the attack on rock phosphate by a

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producing granulated dicalcium phosphate by rock

patent of dicalcium phosphate from rock phosphate, patent of Process for producing plant africa. dicalcium phosphate manufacturing process . manufacture process of dicalcium phosphate from hcl. manufacture process of dicalcium phosphate from hcl XSM

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Process for preparing dicalcium phosphate containing ...

What we claim is: 1. A process for preparing a fertilizer containing dicalcium phosphate from a tricalcium phosphate of mineral origin, said preparing being in the presence of monocalcium phosphate, which process comprises granulating the grains of the sized or unsized phosphate of mineral origin which are larger than 5 mm to a grain size of 1 to 4 mm, admixing the mineral phosphate with ...

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Method of producing dicalcium phosphate

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 ...

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us patent for manufacturing process of dicalcium

us patent for manufacturing process of dicalcium phosphate. ونحن نرحب ترحيبا حارا لكم في الاتصال بنا من خلال الخطوط الساخنة وغيرها من وسائل الاتصال الفورية.

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[PDF] Patent Number : 4 , 678 , 649 45 ) Date of Patent ...

The present invention relates to a process for the manu facture of monopotassium phosphate of a high purity without utilizing organic solvents. According to the process, monopotassium sulfate is reacted, at a tempera ture in the range of between 40 to 100 degrees with a phosphate constituent selected from phosphate rock, dicalcium phosphate or mixtures thereof in the presence of phosphoric acid.

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Recovery and separation of phosphorus as dicalcium ...

The main role of phosphate supplements is to deliver soluble and bioavailable phosphorus to plants and livestock as crop fertilizers or animal feed additives. 1 Crop fertilizers come in different forms such as monoammonium phosphate (NH 4 H 2 PO 4), diammonium phosphate ((NH 4) 2 HPO 4), single superphosphate (Ca(H 2 PO 4) 2 + CaSO 4 2H 2 O, 15–21 wt% P 2 O 5) and triple superphosphate

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patents of preparation of dcp from rock phosphate

Patent US4113842. A method of preparing dicalcium phosphate from phosphate rock for PREPARATION OF DICALCIUM PHOSPHATE FROM Patent No 3 427 124 react phosphate rock...

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process for making dicalcium phosphate from rock

patent of dicalcium phosphate from rock phosphate. Processes for the manufacture of feed-grade dicalcium Oct 26 1976 The combined process of DCP manufacture and phosphoric acid production minimizes any losses of P 2 O 5 normally encountered in the attack on rock phosphate by a

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dicalcium phosphate project report Solution for ore

2013-4-11  phosphate rock minnig, new technology 2012 – Caiman Mining. patent of dicalcium phosphate from rock phosphate – process orissa project report manufacturing rigid pvc pipes; construction machinery companies in poland; dicalcium phosphate plants in middle east – Caiman Mining

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producing granulated dicalcium phosphate by rock

patent of dicalcium phosphate from rock phosphate, patent of Process for producing plant africa. dicalcium phosphate manufacturing process . manufacture process of dicalcium phosphate from hcl. manufacture process of dicalcium phosphate from hcl XSM

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us patent for manufacturing process of dicalcium

us patent for manufacturing process of dicalcium phosphate. ونحن نرحب ترحيبا حارا لكم في الاتصال بنا من خلال الخطوط الساخنة وغيرها من وسائل الاتصال الفورية.

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PHOSPHATE - PhoSul LLC

2020-4-2  phosphate indicalcium and tricalcium (TCP) forms can be released by microbes growing in solution while only 1-33% of the phosphate contained in rock phosphate is released. (Louw et al., A Study of Soil Bacteria Dissolving Certain Mineral Phosphate Fertilizers and Related Com pounds, Journal of Applied Bacteria, vol. 22, pp.

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(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.

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[PDF] Patent Number : 4 , 678 , 649 45 ) Date of Patent ...

The present invention relates to a process for the manu facture of monopotassium phosphate of a high purity without utilizing organic solvents. According to the process, monopotassium sulfate is reacted, at a tempera ture in the range of between 40 to 100 degrees with a phosphate constituent selected from phosphate rock, dicalcium phosphate or mixtures thereof in the presence of phosphoric acid.

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manufacturing process of dicalcium phosphate pdf «

2013-6-26  Processes for the manufacture of feed-grade dicalcium phosphate . 26 Oct 1976 The process comprises the reaction of an excess of phosphate rock with aqueo. Download PDF 3988420 PDF help. US Patent 3033669, Process for the manufacture of dicalcium phosphate, May, 1962, Strauchen et al. »More detailed

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dry process of manufacturing di calcium phosphate

A PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM PHOSPHATE ... In the US patent no. 6183712 a process wherein calcium phosphate is reacted with a mineral acid ... Dicalcium phosphate on a dry basis 63.8g P content of DCP ...

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