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  • Process Technology for Phosphoric Acid Production in Saudi

    Process Technology of Phosphoric Acid. There are two main commercial processes to produce phosphoric acid: the wet process and the dry [] (electrical furnace) process.Although, the acid produced (technical grade) with the dry process is pure, its production cost is much higher than that of the wet process phosphoric acid (WPPA or fertilizer grade acid).

  • Phosphoric acid Essential Chemical Industry

    Phosphorus is an essential plant nutrient and is taken up by plant roots, usually as the dihydrogenphosphate ion, H 2 PO 4-, derived from phosphoric acid, H 3 PO 4.The manufacture of fertilizers that are used to rectify phosphorus deficiencies in soils depends on the availability of supplies of phosphoric acid.

  • (PDF) The hydrochloric acid route for phosphate rock

    Apatite concentrate is an important source of phosphate and contains significant amounts of rare earth elements (REEs). In this study, the possibility of selective phosphoric acid leaching of

  • Wet Process Phosphoric Acid 8 1966 Chemical production

    Detailed capital and production costs are estimated for the traditional dihydrate route to phosphoric acid, the more recent semihydrate-dihydrate scheme, and for the still developing anhydrite leach and hydrochloric acid processes . The costs, advantages, and disadvantages of methods to produce higher acid concentrations are examined. Other PEP

  • Phosphoric Acid Manufacturing Through Hydrochloric Acid

    phosphoric acid could be manufactured through the HCl route using low quality indigenous rock phosphate. The acid, manufactured through this process using amyl alcohol as solvent, is technically feasible. Extraction of phosphoric acid with amyl alcohol allows eliminating impurities up to a great extent and yields phosphoric acid of good quality


    2.1 Raw Materials for Phosphoric Acid Production 7 2.2 Principles of the Process 10 2.3 Production Processes 12 2.4 Emission Abatement 24 2.5 Gypsum Disposal 27 3. DESCRIPTION OF STORAGE AND TRANSFER EQUIPMENT 28 3.1 Raw Materials Storage 28 3.2 Phosphoric Acid Storage 29 4. ENVIRONMENTAL DATA 29 4.1 Input Requirements 29 4.2 Output Production 30

  • Phosphoric acid Wikipedia

    Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H 3 P O 4.It is normally encountered as a colorless syrup of 85% concentration in water. The pure compound is a colorless solid.. All three hydrogens are acidic to varying degrees and can be lost from the molecule as H + ions ().When all three H + ions are removed, the result is

  • Phosphoric acid Manufacturing process for Phosphoric acid

    Phosphoric acid (H3PO4) can be produced by 3 main commercial methods: wet process, thermal process and dry kiln process. Wet process is by far the most common route and the acid can be used in phosphate fertilizers production (DAP, MAP, SPA).

  • Production of phosphoric acid by hcl leaching

    Production of phosphoric acid by hcl leaching Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Production of phosphoric acid by hcl leaching, quarry, aggregate, and different kinds of minerals.

  • Leaching and recovery of phosphate and rare earth elements

    In the conventional wet processing of phosphoric acid production (reaction (1); note that here the fluorapatite mineral composition is taken as Ca 5 (PO 4) 3 F 0.9 Cl 0.1, based on that of the Esfordi concentrate), the fluorapatite mineral is leached with a mixture of sulfuric acid and phosphoric acid in the temperature range of 72 to 83 °C

  • Hydrochloric Acid Copper Leaching

    Sulfuric acid leaching of the nonoxidizing HCl treatment residues under oxygen pressure was chosen as the most attractive means of copper recovery. The technical goal on the O2/H2SO4 leach was production of an electrolyte suitable for direct electrowinning.

  • The process of Making Phosphoric Acid & It's Facts

    Phosphoric acid which is also known as Orthophosphoric acid, which is the IUPAC name of phosphoric acid is an inorganic acid with a chemical formula of H3PO4. Phosphoric acid is one of the very important and usable mineral acids. Phosphoric acid has a crystal structure as a monoclinic and molecular shape of pseudo-tetrahedral.

  • Can anyone recommend literature on phosphoric acid

    Can anyone recommend literature on phosphoric acid production by wet process with HCl leaching,Pls? Here is useful reference with HCl leaching

  • Effect of Hydrochloric Acid on Leaching Behavior of

    acid) during the manufacture of phosphoric acid and superphosphates by the wet process. In acidulation, the carbon dioxide produced during acidulation causes more foaming and results in production of smaller size gypsum crystals, that may blind the downstream phosphogypsum filters, and a low quality phosphoric acid is produced [6].

  • Rare-earth leaching from Florida phosphate rock in wet

    @article{osti_1394450, title = {Rare-earth leaching from Florida phosphate rock in wet-process phosphoric acid production}, author = {Liang, Haijun and Zhang, Patrick and Jin, Zhen and DePaoli, D.}, abstractNote = {Phosphorite, or phosphate rock, is the most significant secondary rare-earth resource. It contains high amounts of phosphate-bearing minerals along with low contents of rare

  • Kinetics of Iron Leaching from Kaolinitic Clay, Using

    Early works, phosphoric acid was reported as leaching iron in kaolin clay [11]. Similarly, the influence of phosphoric acid in iron removal from quartz sand bleaching was also studied [12]. Also, statistical analysis was conducted to determine the most influential factors in the dissolution with organics acids used as a leaching reagent to remove

  • Purification of Wet Process Phosphoric Acid by Solvent

    Phosphoric acid is an important mineral acid and commonly manufactured by two routes, thermal and wet process. Wet process phosphoric acid (WPA) is a more economical and environmental-friendly method of phosphoric acid production [1-3]. However, WPA contains various undesirable impurities and must be purified during the downstream production.

  • US2880063A Process for the preparation of phosphoric

    US2880063A US649649A US64964957A US2880063A US 2880063 A US2880063 A US 2880063A US 649649 A US649649 A US 649649A US 64964957 A US64964957 A US 64964957A US 2880063 A US2880063 A US 2880063A Authority US United States Prior art keywords phosphoric acid solvent aqueous aqueous solution solution Prior art date 1956-06-25 Legal status (The legal status is an

  • Phosphoric acid by HCl LinkedIn SlideShare

    Oct 13, 2017· PHOSPHORIC ACID BY HCL Prepared by- Mr. Vishal B. Thakare (M.Tech, Chemical SVNIT Surat) Assistant Professor PARUL UNIVERSITY Vadodara [email protected] 2. PHOSPHORIC ACID Wet Process by HCL Raw Material Phosphate rock of high P2O5 content(>30%),Hydrochloric acid Organic C4 and C5 alcohol solvent (Butanol or amyl alcohol) to

  • CN85102768B Production of phosphoric acid and phosphate

    The present invention relates to a method for preparing phosphate and phosphorous acid by using hydrochloric acid to decompose phosphate ore, which solves the problems of separation and pollution discharge existing in the technology of decomposing phosphate ore by hydrochloric acid. The method comprises a circulation process, and has the core that in the process of preparing phosphate solution

  • A Green Leaching Method of Decomposing Synthetic CaWO4 by

    In current industrial practice, scheelite is decomposed by hydrochloric acid leaching or caustic soda autoclaving. These processes cause large energy consumption, high production costs and environmental pollution. In this work, a compound leaching process was carried out using hydrochloric acid containing phosphoric acid to digest synthetic CaWO4.


    Hydrochloric acid was 37%, and were all analytical reagent-grade supplied by R & M Marketing, Essex, UK. Distilled water was used in preparing the citric acid solution (10% w/v) and diluting the HCL acid to10% concentration solution. Milli-Q water was used in rinsing the acid treated husks after the leaching

  • Leaching of rare earths elements (REE) past and present

    III. Leaching technologies in new and upcoming REE resources REE recovery in the phosphoric acid industry The main resource for phosphorous in the phosphoric acid industry is the apatite mineral. This mineral, Ca5(PO4)3(Cl, F, OH), is known to contain 0.1 to 1% REE10. The REE in apatite are