patent of dicalcium phosphate from rock phosphate

Patent Of Dicalcium Phosphate From Rock Phosphate

US2728635A - Production of feed grade dicalcium phosphate ...

One simple method of producing feed grade dicalcium phosphate comprehended under this invention, consists of intially forming crude, fluorine-containing monocalcium phosphate. The crude, ilumine-containing monocalcium phosphate is then hydrolyzed with a limited excess of water.

US Patent for 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.

US3391992A - Feed grade dicalcium phosphate - Google Patents

The dicalcium phosphate product is screened and dried, if desired, and stored for packaging or distribution. The dicalcium phosphate product is equivalent in all respects to dicalcium phosphate made from the much more expensive electric-furnace phosphoric acid and possesses an elemental phosphorus to elemental fluorine ratio greater than 100 to 1.

Patent Of Dicalcium Phosphate From Rock Phosphate

Dicalcium Phosphate Patents anreximin patent of dicalcium phosphate from rock phosphate Patents on Phosphate processingbone and, But acid treatment of rock phosphate . Get Information; phosphate rock dicalcium . Dicalcium phosphate Wikipedia. Dicalcium phosphate is the calcium phosphate with the formula CaHPO4 and its dihydrate.

patent of dicalcium phosphate from rock phosphate

A PROCESS FOR THE MANUFACTURE OF FEED GRADE DICALCIUM PHOSPHATE: , to produce dicalcium phosphate In the US patent no6183712 , in rock phosphate or any . [Live Chat] Us Patent For Manufacturing Process Of Dicalcium Phosphate

WO2004076348A1 - patents.google.com

This 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.

US852372A - Method of producing dicalcium phosphate ...

dicalcium phosphate method phosphate acid solution Prior art date 1903-10-13 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US207423A Inventor Eugen Bergmann Original Assignee

US1235025A - Process of making dicalcium phosphate ...

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.

patent of dicalcium phosphate from rock phosphate

Patent US3988420 Processes for the manufacture of feedgrade Oct 26, 1976 The process comprises the reaction of an excess of phosphate rock with feed grade dicalcium phosphate is precipitated with calcium hydroxide, calcium Try the new Google Patents, with machineclassified Google Scholar .

US Patent for Production of dicalcium phosphate or ...

Apr 04, 2001 · This invention relates to the production of dicalcium phosphate (Ca(H 2 PO 4) 2) or monocalcium phosphate (CaHPO 4) from a source of phosphate, generally a phosphate ore, and typically one containing a significant amount of fluoride. More particularly, the invention relates to process in which a high recovery of phosphate can be achieved whilst fluoride contained in the source material …

patents on phosphate rock benefication

patent of dicalcium phosphate from rock phosphate. patent of dicalcium phosphate from rock phosphate Dicalcium-Phosphates- Process, Technology, Applications, Patent Dicalcium phosphate shows the most commonly used production method is known as the "wet acid" route in which rock phosphate is reacted with sulphuric acid. live chat

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

Oct 26, 1976 · Processes for the manufacture of feed-grade dicalcium phosphate and phosphoric acid. As described in Example 2, 1000 kg of phosphate rock were acidulated with 500 kg of wash water containing 2.6% P 2 O 5 and 2340 kg of a dilute aqueous solution of hydrochloric acid (8% HCl). 165 kg of dry DCP were obtained.

Dicalcium-Phosphates- Process, Technology, Applications ...

Patent & Technology. Preparation of dicalcium phosphate from phosphate rock by the use of sulfur dioxide, water, and carbonyl compounds Environmental and Economic Assessment of Feed Phosphate Technology Modernization Evaluation of nutrient release rates from phosphate fertilisers in a laboratory leaching technique.

Leslie R. Tate Inventions, Patents and Patent Applications ...

Preparation of dicalcium phosphate from phosphate rock by the use of sulfur dioxide, water, and carbonyl compounds Patent number: T962001

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