Eng. & Tech. Journal, Vol.30,, 2012 Phosphate Rock Treatment with Hydrochloric Acid for Increasing P2O5 Content 68 INTRODUCTION hosphorus is a vital resource for sustaining world agriculture. Reserves of phosphate rock are identified in many regions of the world. Iraq is one of the largest countries in the world including phosphate ores.Web
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Two interrelated problems exist: the non-renewability of phosphate rock as a resource and the excess phosphate in the water system lead to eutrophication. Removal and recovery of phosphorus (P) from waste streams at wastewater treatment plants (WWTPs) is one of the promising solutions. This paper reviews strategies for P recovery …Web
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However, the phosphate rock contains a significant fluorine content generally between 2 and 4 % by mass [10, 11]. During the production of wet process phosphoric acid (WPA), 3-5 % of the total ...Web
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The treatments comprised of 20 and 35% pure acid and diluted with acid-water ratios of 1:5, 1:2, 1:1 and 2:1 v/v for acidulation at the rate of 60 liters 100 kg-1 rock phosphate.Web
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Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the manufacture of detergents, animal feed, and phosphate (PO43–) fertilizers. Leaching or runoff losses from PR products like PO43– fertilizers, animal feeds, and detergents could cause …Web
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A fast method for sample treatment of phosphate rock has been developed for the purpose of quantitative leaching (98–) of fluoride but less of the interfering cations such as iron and aluminum. Citric acid (0.5 M) was used to extract fluoride in 15–45 min. Leaching of iron and aluminum is minimal, and these ions are complexed with ...Web
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Characterizations of phosphate rock Physical properties of phosphate rock. In Fig. 2, (a) is the raw ore, (b) is the phosphate rock after microwave strengthening treatment.The diffraction peaks of Ca 5 (PO 4) 3 F (PDF 15-0876), CaMg(CO 3) 2 (PDF 71-1662), SiO 2 (PDF 85-0865) are formed unprocessed samples and microwave treatment …Web
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The treatments were: Green manure (Tithonia diversifolia Hemsl.) (60 kg P ha À1), phosphate rock (60 kg P ha À1), goat manure (60 kg P ha À1), Tithonia diversifolia (20 kg P ha À1) combined ...Web
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Existing estimates suggest that the global phosphate rock reserves may be depleted as soon as 50–100 years [3], which would have grave consequences for humanity [4]. ... Overall, this indirect co-treatment method holds great promise for the sustainable management of both wastewater matrices and can provide a simple and effective …Web
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Treatments with sole phosphate rock, Tithonia diversifolia + phosphate rock, and manure + phosphate rock were low without significant difference between them (Figure 3). Correlation analysis showed that resin-Pi, NaHCO 3 -Po, NaHCO 3 -Pi, NaOH-Po NaOH-Pi, and residual P significantly correlated ( p = 0.01) with grain yield and exchangeable ...Web
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The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy, minerals surface properties, minerals distribution and liberation. The conception of a treatment process consists of choosing the proper operations with an adequate succession depending on the ore properties. Usually, froth …Web
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Phosphogypsum, a waste product from manufacturing fertilizer, emits radon, a radioactive gas. It also contains the radioactive elements uranium, thorium and radium. Phosphate rock mining is the fifth largest mining industry in the United States in terms of the amount of material mined. The phosphate industry is concentrated in the …Web
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Recovery of P and REE from phosphate rock by leaching with sulphuric acid, hydrochloric acid and nitric acid has been studied, Wang 2010, Shlewit 2011, Jorjani 2011, Sandström 2012. For the ...Web
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Phosphorus, which today comes mostly from nonrenewable reserves of phosphate rock, typically winds up in municipal waste streams. In the best cases, wastewater treatment plants sequester about 90% of that phosphorus in "sludge" and decompose that sludge into something known as digestate.Web
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Phosphate rock used for fertilizer is a major NORM due to both uranium and thorium. Phosphate is a common chemical constituent of fertilizer. It is principally mined from …Web
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The treatments were Minjingu phosphate rock, manure, Tithonia diversifolia, Minjingu phosphate rock + manure, Tithonia diversifolia + Minjingu phosphate rock, Calcium Ammonium Nitrate (CAN) + Triple Superphosphate (TSP), and a control. Soil samples were collected at a depth of 0–20 cm before and at the end of the experiment for pH, P …Web
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different treatments, the application of phosphate rock, activated phosphate rock, BCPR and BCAPR significantly improved P, Ca, and Mg uptake by the pepper, compared to the control ( p < 0.05).Web
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open access Abstract The establishment of phosphate fertilizers and the phosphoric acid industries are expected in Saudi Arabia in the near future. This is an …Web
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Treatment of the phosphate rock in a 0.25 N hydrochloric acid showed a slight decrease in reactivity after calcination. This decrease, however, was not significant compared to the original uncalcined phosphate rock. The rate of decomposition of phosphates calcined above 900 °C in a mixture of sulfuric and phosphoric acid showed a …Web
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Phosphate Rock Supply Chain Profile (pdf) (1.3 , 03/29/2023, 817-F-22-035) Not used in water treatment. Precursor to the manufacture of phosphoric acid and fluorosilicic acid. Phosphoric Acid Supply Chain Profile (pdf) (2 , 03/2023, 817-F-22-036) Used in corrosion control and for pH adjustment. Precursor to the manufacture of sodium …Web
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The proposed thermal treatment successfully increased the P2O5 content of the untreated phosphate rock from 20.01 wt% (group 1) to 24.24 wt% (group 2) after calcination and, finally, 27.24 wt ...Web
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Treatment of carbonate-phosphate rock by selective magnetic coating (Warren Springs Laboratory, U.K). The principle of the process is the selective adsorption of fine-grained magnetic material on mineral surfaces in a mixed pulp, which renders the coated grains amenable to recovery by conventional high-intensity magnetic separation.Web
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The phosphate rock concentrate must meet the following conditions to be salable : High P 2 O 5 content (>30%); Low CaO/P 2 O 5 ratio (<1.6); Low MgO content (<1%). As will be mentioned in Section 9.3, the content of P 2 O 5 is usually expressed as bone phosphate of lime. The treatment and utilization of phosphate ore is shown in Fig. 1.Web
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Solutions containing mono-calcium phosphate obtained by leaching phosphate rock using diluted hydrochloric acid were treated for uranium and …Web
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The global annual consumption of phosphate rock approached 150 million tons (Jiao et al., 2022). The marketable phosphorites usually contain more than 30 wt% P 2 O 5 and the low-grade phosphate ...Web
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For the water spinach, the activated phosphate rock treatments increased the leaf chlorophyll content by 7.95%, compared to the control. Open in a separate window. Figure 3. Plant heights, leaf chlorophyll contents and biomass of water spinach and pepper plants in successive cultivations with different amendments. The number of replicates was ...Web
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Eng. & Tech. Journal, Vol.30, , 2012 Phosphate Rock Treatment with Hydrochloric Acid for Increasing P2O5 Content Dr.Adel Sharif Hamadi Chemical Engineering Department, University of Technology/Baghdad Email:dr-adelsharif@yahoo Dr.Shurooq Talib Remedhan Chemical Engineering Department, University of Technology/Baghdad …Web
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To be effective in crop nutrition, rock phosphate should be mixed well, not banded, in soil at pH 5.5 to facilitate its dissolution, and organic matter should be added to facilitate …Web
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A chemical assay of the phosphate rock powders before and after activation is shown in Table 1. The chemical composition was affected upon base/acid treatment. The data indicate a reduction in the mass fraction of CO 2 after base/acid treatment, decreasing from 7.44% to 2.69% (w/w) and as a result the P 2 O 5 content increases. These data …Web
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This overview discusses and summarizes the State-of-the-Art and the existing efforts to overcome these problems and to produce a high-grade phosphate …Web
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Compared to phosphate rock, activated phosphate rock has been confirmed to be more effective for heavy metal (e.g., Pb, Zn, and Cd) immobilization and for the P supply [8][9][10][11] [12] [13][14 ...Web
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Triple Super Phosphate full acidulation- H 2 S0 4 _. Wet Process Acid ~-----~~~~ Ammonium Phosphates NPK Fertilizers E Merchant Acid & Super Pure Acid & Derivatives Fig. 1 0.1. Phosphate rock treatments and end products. terms are 100.00 percent BPL = 45.77 per cent P 2 0 5 = 19.96 percent P. International trade of phosphate rock isWeb
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