• Council for Innovative Research

    The principal reaction occurring in a phosphoric acid plant is the reaction between phosphate rock and sulfuric acid to give soluble phosphoric acid and insoluble calcium sulfate. However, phosphate rocks contain many impurities that have important effects in phosphoric acid production.

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  • Phosphoric Acid Uses and Properties of Phosphoric Acid ...

    Phosphoric acid is manufactured from fluorapatite, called phosphate rock, 3Ca 3 (PO 4) 2. CaF 2 , by the adding of concentrated (95%) sulfuric acid in a chain of wellstirred reactors. This results in calcium sulfate (gypsum) and phosphoric acid plus other insoluble impurities. water is added, and the gypsum is eliminated by filtration along ...

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  • PHOSPHORIC ACID PRODUCTION

    In a wet process facility, phosphoric acid is produced by reacting sulfuric acid (H2SO4) with naturally occurring phosphate rock. The phosphate rock is dried, crushed, and then continuously fed into the reactor along with sulfuric acid. The reaction combines calcium from the phosphate rock with sulfate, forming calcium sulfate (CaSO4), commonly

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  • Phosphorus Fertilizers an overview | ScienceDirect Topics

    The reaction of phosphoric acid with finely ground rock phosphate yields triple superphosphate (TSP). MAP and DAP are the products of reactions between phosphoric acid and ammonia. Phosphoric acid can be heated to drive off water to produce superphosphoric acid (68–70% P 2 O 5 ), which when reacted with ammonia yields ammonium polyphosphate.

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  • What are fertilisers? Fertilisers AQA GCSE Chemistry ...

    Phosphate rock cannot be used as a fertiliser because it is insoluble but it can be used to make fertilisers. Phosphate rock contains phosphorus compounds. When it reacts with acids, useful ...

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  • rock phosphate concentration process

    Phosphate rock of 70 to 75% BPL, or as high as is reasonably obtainable, is finely ground in a ball mill and then mixed with cooled recycled phosphoric acidgypsum slurry in a digestion tank (Figs. and ).At this stage the only reaction which occurs is between acid and any carbonates present in the rock, and between phosphates and low ...

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  • Phosphate Rock And Sulfuric Acid | Cromalinsupport

    If more sulfuric acid is added, a mixture of phosphoric acid and gypsum (calcium sulfate) is obtained. superphosphate or superphosphate of lime, Ca(H 2 PO 4) 2, is a compound produced by treating rock phosphate with sulfuric acid or phosphoric acid , or a mixture of the is the principal carrier of phosphate , the form of phosphorus ...

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  • Chemical Production | phosphoricacid

    Important to know, fluorapatite (Ca3(PO4)2) is the basis of phosphoric acid as this is the reactant that contains phosphate; a key component in phosphoric acids industrial uses. The mixing of fluorapatite and sulfuric acid creates a double replacement reaction, forming both phosphoric acid …

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  • Dissolution of Phosphate Rock by Mixtures of Sulfuric and ...

    May 15, 2008· The dihydrate process for the production of phosphoric acid is increasingly important as the basis for phosphate fertilizer plants. The process involves dissolution of phosphate rock in an aqueous mixture of phosphoric and sulfuric acid and subsequent crystallization of calcium sulfate dihydrate from the product phosphoric acid solution.

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  • (PDF) Treatment of phosphate rocks with hydrochloric acid

    Phosphate rocks were leached with hydrochloric acid; and radium was removed by coprecipitation with BaSO4. Uranium and lanthanides were extracted by di(2ethyl hexyl) phosphoric acid and tributyl ...

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  • The Manufacture of Sulfuric Acid and Superphosphate

    The basic reaction in the manufacture of superphosphate is the reaction of insoluble phosphate rock with sulfuric acid to form the soluble calcium dihydrogen phosphate, Ca(H2PO4)2. This is described by the following equation: PO4 3+ H 2SO4 → H2PO4+ SO 4 2The phosphate rock, imported from Nauru, Jordan, Morocco, Israel and the USA, is

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  • Solved: Phosphoric Acid Can Be Prepared By Reaction Of Sul ...

    Question: Phosphoric Acid Can Be Prepared By Reaction Of Sulfuric Acid With "phosphate Rock" According To The Equation: Ca3(PO4)2+3H2SO4 > 3CaSO4 + 2H3PO4 What Is The Molar Mass Of Ca3(PO4)2? How Many Oxygen Atoms Are There In Of Ca3(PO4)2? Suppose The Reaction Is Carried Out Starting With 103 G Of Ca3(PO4)2 And G Of H2SO4.

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  • Phosphate Rock Treatment with Hydrochloric Acid for ...

    The present paper deals with the treatment of phosphate obtained from a commercial sample of Akashat phosphate ore in hydrochloric acid. The factors studied are effects of the temperature of dissolution, acid concentration, and the time required for

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  • Synthesis of Monocalcium Phosphate from the Syrian ...

    Reduce the concentration of fluorine in wet phosphoric acid : Phosphoric acid used contains a high content of fluorine(%F), so the use of monocalcium phosphate as fertilizer resulting in air pollution and soil and ground water of fluorine compounds with a …

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  • Dissolution of Tunisian phosphate ore by a mixture of ...

    phosphate rock (2634 % P 2 O 5) has more than tripled during the last fifty years reaching 217 million tons by 2012 [4]. Several studies on the dissolution of synthetic phosphate [512] or phosphate ore [1323] in acid solutions have been carried out such as phosphoric acid [5, 1517], succinic acid [18], acetic acid …

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  • Nitrophosphate process Wikipedia

    The process involves acidifying phosphate rock with nitric acid to produce a mixture of phosphoric acid and calcium nitrate. Ca 3 (PO 4) 2 + 6 HNO 3 + 12 H 2 O → 2 H 3 PO 4 + 3 Ca(NO 3) 2 + 12 H 2 O. The mixture is cooled to below 0 °C, where the calcium nitrate crystallizes and can be separated from the phosphoric acid.

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  • CN85102768A Decomposing phosphate rock by chlorhydric ...

    The present invention is the method that decomposing phosphate rock by chlorhydric acid prepares phosphoric acid salt and phosphoric acid, proposes in order to overcome separation and two problems of blowdown of existing in the decomposing phosphate rock by chlorhydric acid technology, and this method is a circulation core of method, be to prepare in the solution of phosphoric acid ...

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  • Phosphoric acid can be prepared by reaction of sulfuric ...

    acid can be prepared by reaction of sulfuric acid with “phosphate rock” according to the equation: Ca 3 (PO 4) 2 + 3H 2 SO 4 3CaSO 4 + 2H 3 PO 4 Suppose the reaction is carried out starting with 129 g of Ca 3 (PO 4) 2 and g of H 2 SO 4. Which substance is the limiting reactant? A) Ca 3 (PO 4) 2 B) H 2 SO 4 C) CaSO 4 D) H ...

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