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Us Patent For Manufacturing Process Of Dicalcium Phosphate

US2948590A - Process for the manufacture of dicalcium ...

US2948590A - Process for the manufacture of dicalcium phosphate - Google Patents. US2948590A - Process for the manufacture of dicalcium phosphate - Google Patents. Process for the manufacture of...

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US2108940A - Process for making di-calcium phosphate ...

The process of making di-calcium orthophosphate of approximately 95% purity which consists in mixing phosphoric acid of from to concentration with limestone comminuted to pass a 100 mesh sieve, in...

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US Patent for Production of dicalcium phosphate or ...

1999-8-25  DETAILED DESCRIPTION OF THE INVENTION The present invention provides for processes for the manufacture of dicalcium phospate from calcium phospate. It also relates to methods for the manufacture of monocalcium phosphate fertilizer, edible monocalcium phosphate and edible dicalcium phosphates.

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us patent for manufacturing process of dicalcium phosphate

The process produces three solid products: (1) high-grade dicalcium phosphate dihydrate (main product), (2) gypsum, which can be used for manufacturing of wallboards, cement, and plaster of paris, or for soil conditioning (byproduct), and (3) iron hydroxide (Fe(OH) 3)-rich product which can be used for pigment production (byproduct).

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us patent for manufacturing process of dicalcium phosphate

dicalcium phosphate manufacturing process ppt. USA Process for the manufacture of dicalcium,1 process for the production of a granular, animal feed grade, dicalcium phosphate product which comprises forming a slurry having a solids content between about 50% and about 70% by weight of comminuted calcium carbonate and an aqueous medium...

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Production of dicalcium phosphate or monocalcium phosphate ...

The present invention provides for processes for the manufacture of dicalcium phospate from calcium phospate. It also relates to methods for the manufacture of monocalcium phosphate fertilizer, edible monocalcium phosphate and edible dicalcium phosphates.

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Process for the production of dicalcium phosphate ...

U.S. Pat. No. 4,113,842, assigned to the Tennessee Valley Authority (TVA), describes the use of hydroxysulphonic acid leachants in preparing dicalcium phosphate from phosphate ores. In the process described in this patent, dicalcium phosphate is taken into solution during leaching but calcium hydroxysulphonate, which is formed at the same time, is separated as a solid along with unreacted

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Processes for the manufacture of feed-grade dicalcium ...

The present invention relates to an improved process for the manufacture of dicalcium phosphate (hereinafter referred to as DCP) and for the manufacture of pure phosphoric acid. The dicalcium phosphate obtained is characterized by a low fluorine content which is useful as a supplement to animal food and is thus designated in the trade as "feed-grade DCP".

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Process for the production of granulated dicalcium ...

The present invention relates to a process for the production of granulated dicalcium phosphate dihydrate from fine-grain, powdered dicalcium phosphate dihydrate. Dicalcium phosphate is used technically on a large scale as an additive for toothpastes and as a carrier material in pharmaceutical tablets.

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Process of production of anhydrous monocalcium phosphate ...

United States Patent 2271361. Abstract: This invention pertains to an improved process for manufacturing monocalcium phosphate and. also for improving the physical and chemical properties of commercial forms of monocalcium phosphate. Monocalcium phosphate is the primary salt of orthophosphoric acid.

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US2108940A - Process for making di-calcium phosphate ...

US2108940A US723807A US72380734A US2108940A US 2108940 A US2108940 A US 2108940A US 723807 A US723807 A US 723807A US 72380734 A US72380734 A US 72380734A US 2108940 A US2108940 A US 2108940A Authority US United States Prior art keywords approximately limestone water calcium phosphoric acid Prior art date 1934-05-03 Legal status (The legal status is an

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US Patent for Production of dicalcium phosphate or ...

1999-8-25  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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us patent for manufacturing process of dicalcium phosphate

The process produces three solid products: (1) high-grade dicalcium phosphate dihydrate (main product), (2) gypsum, which can be used for manufacturing of wallboards, cement, and plaster of paris, or for soil conditioning (byproduct), and (3) iron hydroxide (Fe(OH) 3)-rich product which can be used for pigment production (byproduct).

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Process for the production of dicalcium phosphate ...

The process of claim 1 wherein the leach liquor after separation is distilled in the range 80°-100° C. to produce a mixture of dicalcium phosphate and calcium sulphite, and to recover at least part of the sulphur dioxide and the carbonyl compound; and where the distillation is performed below about 90° C., the liquor remaining after recovery ...

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Process for the preparation of dicalcium phosphate ...

1990-5-10  The present invention relates to a process for the preparation of dicalcium phosphate dihydrate stabilized with dimagnesium phosphate trihydrate and sodium pyrophosphate, in which an aqueous suspension of calcium carbonate is introduced into a reactor equipped with a stirrer and recirculated by pumping at more than 3,000 rpm through a high-speed mixer which is in flow

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A PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM ...

2003-2-27  1. A process for the preparation of feed grade dicalcium phosphate substantially free of fluoride from a source containing monocalcium phosphate such as superphosphate, concentrated super phosphate and fertilizer grade phosphate which comprises the steps of (a) leaching out monocalcium phosphate therefrom with water or recycle wash water from at lest one subsequent steps, (b) adding a

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US4166839A - Method for producing calcium phosphates ...

US4166839A US05/816,869 US81686977A US4166839A US 4166839 A US4166839 A US 4166839A US 81686977 A US81686977 A US 81686977A US 4166839 A US4166839 A US 4166839A Authority US United States Prior art keywords reaction phosphoric acid calcium carbonate reaction zone preheated Prior art date 1974-03-19 Legal status (The legal status is an assumption and is not a legal conclusion.

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Process for the production of granulated dicalcium ...

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 μm and 20 to 5% of calcium hydroxide with a grain size of less than 120 μm are dry mixed and continuously sprayed and granulated in a fluidized bed with 20 to 50% ...

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Process for the production of calcium phosphates - Patent ...

Novel processes are provided for producing anhydrous dicalcium phosphate (DCPA) and the gamma and beta forms of calcium pyrophosphate from the reaction of phosphoric acid and lime.Dentifrice compositions containing the resultant phosphates are also disclosed.

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Process of production of anhydrous monocalcium phosphate ...

Title: Process of production of anhydrous monocalcium phosphate. United States Patent 2271361. Abstract: This invention pertains to an improved process for manufacturing monocalcium phosphate and. also for improving the physical and chemical properties of commercial forms of monocalcium phosphate. Monocalcium phosphate is the primary salt of ...

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us patent for manufacturing process of dicalcium phosphate

The process produces three solid products: (1) high-grade dicalcium phosphate dihydrate (main product), (2) gypsum, which can be used for manufacturing of wallboards, cement, and plaster of paris, or for soil conditioning (byproduct), and (3) iron hydroxide (Fe(OH) 3)-rich product which can be used for pigment production (byproduct).

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A PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM ...

2003-2-27  1. A process for the preparation of feed grade dicalcium phosphate substantially free of fluoride from a source containing monocalcium phosphate such as superphosphate, concentrated super phosphate and fertilizer grade phosphate which comprises the steps of (a) leaching out monocalcium phosphate therefrom with water or recycle wash water from at lest one subsequent steps, (b) adding a

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Process of manufacturing feed blocks and products thereof ...

Process of manufacturing feed blocks and products thereof ... ' ' LINEHAN KEVIN L Patent: United STATES Patent - United States. Application: US19780951954 on 1978-10-16. Publication: ... supplement blocks by chemically hardening a nutrient containing water bearing medium using active magnesium oxide and dicalcium phosphate. Priority number: ...

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Process for the production of calcium phosphates - Patent ...

Novel processes are provided for producing anhydrous dicalcium phosphate (DCPA) and the gamma and beta forms of calcium pyrophosphate from the reaction of phosphoric acid and lime.Dentifrice compositions containing the resultant phosphates are also disclosed.

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Method for producing feed grade dicalcium phosphate ...

2006-5-26  The process of producing feed grade calcium phosphate features that the calcium phosphate producing process includes the first liquid phase neutralizing reaction between dilute phosphoric acid and calcium containing compound in the reactor to produce calcium dihydrogen phosphate slurry, the subsequent adding calcium containing compound for the second liquid phase neutralizing reaction to ...

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Patents Assigned to Israel Chemicals Ltd. - Justia Patents ...

Justia - Patents - Patents and Patent Application Resources. Abstract: 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 ...

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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 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 ...

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(PDF) Mixing and formulation of low dose drugs: Underlying ...

equipment during the manufacturing process of a. ... Dicalcium phosphate dihydrate (Em compress) ... US Patent Application US 2005/0287207 A1, 2005.

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US Patent Application for PHARMACEUTICAL COMPOSITION

Manufacturing process of example 1: 1. Granules were prepared comprising Lactose anhydrous, AFFINISOL™ HPMC HME 15, and Everolimus. 2. Crospovidone and lactose anhydrous and magnesium stearate were added to the granules. 3. The lubricated granules were compressed into tablets.

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Graham S. Walker Inventions, Patents and Patent ...

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 containing dissolved phosphate values and calcium hydroxysulphonate is separated from any gangue and other insoluble material; and the leach liquor is treated to recover therefrom a ...

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