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Journal articles on the topic 'Low-grade phosphate'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Sibi, G. "Role of phosphate solubilizing fungi during phosphocompost production and their effect on the growth of tomato (Lycopersicon esculentum L) plants." Journal of Applied and Natural Science 3, no. 2 (2011): 287–90. http://dx.doi.org/10.31018/jans.v3i2.199.

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Experiments were conducted to evaluate the effect of phosphate solubilizing fungi (Aspergillus awamori and Trichoderma viride) in phosphocompost preparation along with low grade rock phosphate. Co-inoculation of phosphate-solubilizing fungi significantly increased the nutrient value of the compost that explores high P-solubilizing potential of A.awamori and T.viride which can be exploited for the solubilization of fixed phosphates thereby enhancing soil fertility and plant growth. Rock phosphate application along with phosphate solubilizing fungi increased 69.2% acid phosphatase and 65% alkali

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2

Hernáinz, F., M. Calero, and G. Blázquez. "Flotation of low-grade phosphate ore." Advanced Powder Technology 15, no. 4 (2004): 421–33. http://dx.doi.org/10.1163/1568552041270491.

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3

D, SELVI, MAHIMAIRAJA S, SANTHY P, and RAJKANNAN B. "Studies on factors affecting the dissolution of low grade rock phosphates in rice solis." Madras Agricultural Journal 91, March (2004): 109–12. http://dx.doi.org/10.29321/maj.10.a00078.

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An incubation study on the dissolution of rock phosphates with soils of different pH, was taken up at Tamil Nadu Agricultural University, Coimbatore. It was concluded from the experiment that the dissolution of Udaipur rock phosphate and Mussorrie rock phosphate were remarkably higher in soils with a pH of 5.8 both at 30 and 60 day of incubation, followed by neutral soil (pH 7.6) and saline soil (pH 8.75).During the initial stage of incubation upto 30 days, the dissolution was found to be higher with Udaipur rock phosphate, whereas at the end of 60 days, Mussoorie rock phosphate recorded highe

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4

Raiymbekov, Y. B., P. A. Abdurazova та U. B. Nazarbek. "Төменсұрыпты фосфат шикізатын органикалық қышқылмен байытудың термодинамикалық талдауы". Горный журнал Казахстана, № 5(2017) (13 червня 2023): 32–48. http://dx.doi.org/10.48498/minmag.2023.2017.5.005.

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The phosphorus industry faces the challenge of developing low-grade phosphate reserves for industrial purposes, requiring technological solutions for enrichment. About 20 million tons of low-grade phosphorites are currently unsuitable for processing. Depleting phosphorite deposits and low phosphorus anhydride levels reduce global demand for domestic ore and necessitate research on enrichment and integrated use. This study aims to conduct a thermodynamic analysis of low-grade phosphate enrichment using acetic acid. Using the HSC Chemistry 9.3 program, developed by Finnish metallurgical company

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5

Bahous, Raounak, Abdelaziz Idres, Ibtissem Zeriri, et al. "Processing of low-grade phosphate ores of Djebel Onk mine (Algeria) with electrostatic separation method." Mineralia Slovaca 56, no. 2 (2024): 181–94. https://doi.org/10.56623/ms.2024.56.2.5.

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Phosphate ore is an important raw material for manufacturing phosphorous fertilizers and chemicals. Although most phosphate resources cannot be marketed directly as raw material, including that from the Djebel Onk mine, due to their low P2O5 content and high impurity content. To obtain a quality phosphate concentrate, the enrichment of low-grade phosphate ore is therefore of great necessity. The objective of this research was to explore the use of mixtures consisting of three beige phosphate sub-layers and two black phosphate sub-layers as feed material. The objective of this study was also to

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6

Kandah, Munther Issa. "Zinc and cadmium adsorption on low-grade phosphate." Separation and Purification Technology 35, no. 1 (2004): 61–70. http://dx.doi.org/10.1016/s1383-5866(03)00131-x.

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7

Abbes, Noureddine, Essaid Bilal, Ludwig Hermann, Gerald Steiner, and Nils Haneklaus. "Thermal Beneficiation of Sra Ouertane (Tunisia) Low-Grade Phosphate Rock." Minerals 10, no. 11 (2020): 937. http://dx.doi.org/10.3390/min10110937.

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Low-grade phosphate rock from Sra Ouertane (Tunisia) was beneficiated using a thermal treatment consisting of calcination, quenching, and disliming. Untreated phosphate rock samples (group 1), calcined phosphate rock samples (group 2), as well as calcined, quenched, and dislimed (group 3) phosphate rock samples, were investigated using inductively-coupled plasma atomic emission spectroscopy (ICP-AES), inductively-coupled plasma mass spectrometry (ICP-MS), thermogravimetric analysis (TGA), and X-ray powder diffraction (XRD). Besides, the particle size distribution of the aforementioned three gr

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8

Bhatti, Muhammad Arif, Abdul Ahad, Kamran Raza Kazmi, Uzma Zafar, Athar Amin, and Adnan Akram. "Flotation Studies on Low-Grade Phosphate Rock of Tarnawai, District Abbottabad, KPK Province, Pakistan." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 63, no. 2 (2020): 101–11. http://dx.doi.org/10.52763/pjsir.phys.sci.63.2.2020.101.111.

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A low-grade siliceous sedimentary phosphate rock assaying 22.05% P205 was upgraded by double float (direct and reverse) technology. The rock contains collophane (carbonate fluorapatite) as the valuable phosphate mineral along with siliceous, carbonaceous and clay minerals. A process was developed which yielded a high-grade phosphate concentrate with improved recovery rate. The developed process consists of three parts. The first part includes wet grinding of ore to liberation point followed by separation of fines (slimes) by cone classifier. The finely ground deslimed ore was floated by direct

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9

Zafar, Zafar Iqbal, M. M. Anwar, and D. W. Pritchard. "Innovations in beneficiation technology for low grade phosphate rocks." Nutrient Cycling in Agroecosystems 46, no. 2 (1996): 135–51. http://dx.doi.org/10.1007/bf00704313.

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10

Biswas, D. R., and G. Narayanasamy. "Rock phosphate enriched compost: An approach to improve low-grade Indian rock phosphate." Bioresource Technology 97, no. 18 (2006): 2243–51. http://dx.doi.org/10.1016/j.biortech.2006.02.004.

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11

Ruan, He, and Chi. "Review on Beneficiation Techniques and Reagents Used for Phosphate Ores." Minerals 9, no. 4 (2019): 253. http://dx.doi.org/10.3390/min9040253.

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Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade phosphate ore is, hence, of great necessity. Many beneficiation techniques can be employed to upgrade the P2O5 grade of phosphate ores based on their characteristics in chemical composition and texture. The flotation process is most widely applied to balance the

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12

Yuan, Xiao Li, and Wen Tang Xia. "Removal of Phosphate Anions from Wastewater by Wasted Low Grade Iron Ore with High Phosphorus Adsorbent." Advanced Materials Research 803 (September 2013): 127–30. http://dx.doi.org/10.4028/www.scientific.net/amr.803.127.

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Low grade ore iron with high phosphorus(LGIOWHP), an industrial solid waste is used as an adsorbent to remove phosphate anions from wastewater. The effects of initial pH, stirring speed, reaction time, reaction temperature and adsorbent dosage on the phosphate removal rate were investigated. The results show that the phosphate removal rate exceed 99% under the optimal conditions. After phosphate removal reaction, the phosphate concentrations completely meet the requirement of national discharge standards of the second category pollution (GB 8978- 1996).

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13

Whelan, JS, CL Davis, S. Rule, et al. "Fludarabine phosphate for the treatment of low grade lymphoid malignancy." British Journal of Cancer 64, no. 1 (1991): 120–23. http://dx.doi.org/10.1038/bjc.1991.253.

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14

Yan, Fu Kun, Qing Fei Xiao, Xiong Tong, Sheng Kui Ren, Rui Guo, and Zai Quan Zhao. "Research on Selective Grinding of Yunnan Low-Grade Phosphate Rock." Advanced Materials Research 988 (July 2014): 286–89. http://dx.doi.org/10.4028/www.scientific.net/amr.988.286.

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In view of the mid-low grade phosphate rock somewhere in Yunnan province, first of all study the mechanical properties of ore, on the basis of which combine Duanshi semi diameter theory formula and crushing statistic mechanics, optimized from diameters, shapes and proportion of the grinding medias, increasing the grinding selectivity only to get selective optimization scheme, finally proved by practice, after changing the media system, on the basis of original mill processing capacity increased by 19.54%, the average steel consumption reduced more than 10%, the particle size of grinding produc

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15

Zafar, Zafar Iqbal, M. M. Anwar, and D. W. Pritchard. "Beneficial Route of Low-Grade Phosphate Rocks for Fertilizer Production." Industrial & Engineering Chemistry Research 34, no. 12 (1995): 4501–7. http://dx.doi.org/10.1021/ie00039a042.

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16

Benedek, Peter, Nils Wenzler, Maksym Yarema, and Vanessa C. Wood. "Low temperature hydrothermal synthesis of battery grade lithium iron phosphate." RSC Advances 7, no. 29 (2017): 17763–67. http://dx.doi.org/10.1039/c7ra00463j.

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Battery-grade LiFePO<sub>4</sub> is prepared via low-temperature hydrothermal synthesis. Optimizing the precursor concentration and the reaction time saves more than 30% energy compared to earlier hydrothermal syntheses of LiFePO<sub>4</sub> nanoparticles.

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17

Kandah, M. I. "The Potential Use of Low-Grade Phosphate Rocks as Adsorbent." Chemical Engineering & Technology 25, no. 9 (2002): 921–24. http://dx.doi.org/10.1002/1521-4125(20020910)25:9<921::aid-ceat921>3.0.co;2-g.

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18

Garcia-Lodeiro, Ines, Salma Chhaiba, Nuria Husillos-Rodriguez, Ángel Palomo, and Hajime Kinoshita. "Development of Magnesium Phosphate Cement Based on Low-Grade MgO." Materials 18, no. 6 (2025): 1198. https://doi.org/10.3390/ma18061198.

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Magnesium phosphate cements (MPCs) are a class of inorganic cements that have gained significant attention in recent years due to their exceptional properties and diverse applications in the construction and engineering sectors, particularly in the confinement of radioactive waste. These cements set and harden through an acid–base reaction between a magnesium source (usually dead-burnt magnesia) and a phosphate source (e.g., KH2PO4). The dead-burnt MgO (DBM) used is typically obtained by calcining pure MgCO3 at temperatures between 1600 and 2000 °C. The present work explores the possibility of

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19

Na, Wang. "Research progress in activation of phosphorus containing substances and remediation of heavy metal pollution in soil." E3S Web of Conferences 165 (2020): 02033. http://dx.doi.org/10.1051/e3sconf/202016502033.

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The phenomenon of soil phosphorus deficiency in China is very serious, which limits the agricultural production in China. Low molecular weight organic acids and phosphorus solubilizing microorganisms are widely distributed in the soil, and can be used as activators to improve the content of phosphorus in the soil. With the rapid development of industry and agriculture in China, heavy metal pollution in the environment is becoming more and more serious. China is rich in phosphate rock resources, but the grade of phosphate rock is low and the utilization efficiency is not high. Using phosphate r

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20

Xiao, Hong, Quan Jun Liu, Mei Guang Jiang, and Jun Long Yang. "The Flotation Test of Collophanite in Yunnan Province." Advanced Materials Research 813 (September 2013): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.813.259.

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The samples belong to low grade siliceous collophanite. Main useful mineral is cellophane and main gangue minerals are quartz , calcite and dolomite. The grade of P2O5 is 21.98% and the grade of SiO2 is 31.34%. Through the straight-reverse flotation, the phosphate concentrates with a grade of 27.68% and the recovery of 83.04% were obtained. The content of MgO is 0.92% in phosphate concentrates.

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21

Yang, Liang, Chaoyang Li, Caifang Cao, Xiang Xue, Dandan Gong, and Linsheng Wan. "Kinetics of Low-Grade Scheelite Leaching with a Mixture of Sodium Phosphate and Sodium Fluoride." Metals 12, no. 10 (2022): 1759. http://dx.doi.org/10.3390/met12101759.

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The current technology of leaching low-grade scheelite with sodium hydroxide or sodium carbonate has the disadvantages of large leaching reagent dosage and low leaching efficiency of tungsten. In order to extract scheelite efficiently, the kinetics of low-grade scheelite leaching with a mixture of sodium phosphate and sodium fluoride was investigated. In this study, the effects of temperature, phosphate concentration, and fluoride ion concentration on the leaching rate of tungsten were investigated. Our results showed that the leaching rate of tungsten was greatly influenced by the temperature

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22

Li, Hao, Gideon Lambiv Dzemua, and Qi Liu. "Beneficiation Studies of the Low-Grade Skarn Phosphate from Mactung Tungsten Deposit, Yukon, Canada." Minerals 11, no. 4 (2021): 421. http://dx.doi.org/10.3390/min11040421.

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A preliminary beneficiation study of low-grade skarn phosphate rocks from Mactung tungsten deposit, along the Yukon and Northwest Territories border in Canada, was carried out through standard Bond Work Index, grinding test and laboratory batch flotation tests. The skarn phosphate sample assayed 12.65% P2O5 (about 30% apatite), 31.71% CaO and 35.46% SiO2. The main gangue minerals included calcite, quartz, calc-silicates, amphibole, feldspar, and pyrrhotite. The sample had a Bond Work Index of 19.04 kWh/t, belonging to a hard ore category. The beneficiation study of the skarn phosphate sample w

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23

Guo, Yong Jie, Ling Pan Du, Jin Zhong, Fu Yue Fang, and Ci Yun Chen. "Study on Separation of a Low Magnesium Semi-Weathered Phosphate Ore from Yunnan." Advanced Materials Research 962-965 (June 2014): 852–55. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.852.

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Weathered phosphate ore is an important part of phosphate ore resources, it contains a huge reserves of weathered phosphate ore resources in Yunnan regions. With the gradual consumption of the rich phosphate ore resources, recycling for weathering phosphate ore is receiving more and more people's attention. In this study, using a low magnesium semi-weathered phosphate ore which from Yunnan Dianchi Lake area as the research object, and based on its ore properties established a experimental program of pre- desliming with cyclone and then flotation. The loss rate of P2O5 under 20% on the deslimin

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24

Huang, Qi Mao, Jing Jing Huang, Hong Zhou, Zhi Quan Pan та Ru An Chi. "Synthesis and Application of α-Chloro Oleic Acid Monoester Floating Collector". Advanced Materials Research 233-235 (травень 2011): 596–99. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.596.

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Novel floatation collector for phosphate ore, α-chloro oleic acid monoester of tartaric acid, was synthesized by steps of chlorination, acylation, esterification with oleic acid as raw material. The flotation properties for a low-grade collophanite in Hubei were evaluated. Result showed that novel collector had better performance than common fatty acid collector by less dosage. Its further application and promotion is significant for reducing the mineral processing cost of low-grade phosphate rocks.

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25

Wu, Qinghui, Junqi Li, Xiaodong Lv, Benjun Xv, Chaoyi Chen, and Run Huang. "Reaction Mechanism of Low-Grade Phosphate Ore During Vacuum Carbothermal Reduction." Metallurgical and Materials Transactions B 52, no. 3 (2021): 1484–94. http://dx.doi.org/10.1007/s11663-021-02117-6.

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26

Singh, C. P., D. S. Ruhal, and M. Singh. "The solubilization of low-grade rock phosphate with anaerobic digester slurry." International Biodeterioration 23, no. 4 (1987): 249–56. http://dx.doi.org/10.1016/0265-3036(87)90004-2.

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27

Dalal, R. C., J. M. Oades, and D. G. Lewis. "Fertiliser effectiveness of acid extracted phosphorus from low grade phosphate rock." Fertilizer Research 17, no. 2 (1988): 165–76. http://dx.doi.org/10.1007/bf01050277.

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28

Zafar, Zafar Iqbal, M. M. Anwar, and D. W. Pritchard. "Optimization of thermal beneficiation of a low grade dolomitic phosphate rock." International Journal of Mineral Processing 43, no. 1-2 (1995): 123–31. http://dx.doi.org/10.1016/0301-7516(94)00043-y.

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29

Keleş, Eda, A. Kadir Özer, and Sedat Yörük. "Removal of Pb2+ from aqueous solutions by rock phosphate (low-grade)." Desalination 253, no. 1-3 (2010): 124–28. http://dx.doi.org/10.1016/j.desal.2009.11.021.

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30

Tashkenbay, Bautdinov, Reymov Akhmed, and Tadjiev Sayfuddin. "Chemical Activation of Khojakul Phosphorites by Ammonium Salts." Chemical Science International Journal 19, no. 2 (2017): 1–6. https://doi.org/10.9734/CSIJ/2017/30755.

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<strong>Aims: </strong>To investigate chemical activation of low-grade phosphorite from Karakalpakstan, Khojakul by ammonium salts in order to obtain slow-acting phosphate fertilizers. <strong>Study Design:</strong> The content of the total form N (N<sub>t.</sub>) was determined by method Kjeldahl method. Determination of total and acceptable forms (on 0.2 M solution of Trilon B) of phosphorus (P<sub>2</sub>O<sub>5tot</sub>., P<sub>2</sub>O<sub>5wat</sub>.) was performed widely in the analysis of phosphate ores by differential method on photo colour meter PCM-3 (made in Russia, l = 440 nm) as

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31

Basak, B. B. "Phosphorus Release by Low Molecular Weight Organic Acids from Low-Grade Indian Rock Phosphate." Waste and Biomass Valorization 10, no. 11 (2018): 3225–33. http://dx.doi.org/10.1007/s12649-018-0361-3.

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32

Sen, Joydip, Himadri Basu, V. Madakkaruppan, et al. "Analysis of Phosphate Ore Samples by Wavelength Dispersive X-Ray Fluorescence Spectrometry (WDXRFS): Implications for Grade Control during Mining and Process Optimization." Journal Of The Geological Society Of India 101, no. 7 (2025): 1020–26. https://doi.org/10.17491/jgsi/2025/174200.

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ABSTRACT The mining and beneficiation of low-grade phosphate ores has become inevitable due to its increasing consumption for fertilizers. Controlling of ore grade through blending and beneficiation of low-grade ore requires extensive chemical analysis in each step for optimizing process parameters. To facilitate rapid analysis of phosphate ore a new analytical procedure has been developed using sequential WDXRF spectrometer. A set of international certified reference materials (CRMs) and well-characterized in-house standards of phosphatic siliceous dolostone of the Vempalle Formation, Cuddapa

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33

El-barbary, T. A. A., and M. A. El-Badry. "Separation of high quality phosphate by Rhisobium rhizogenes of Egyptian Sebaiya west low-grade phosphate ore." Journal of Basic and Environmental Sciences 5, no. 4 (2018): 310–13. http://dx.doi.org/10.21608/jbes.2018.370548.

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34

Rao, G. V., and Swati Mohanty. "Optimization of flotation parameters for enhancement of grade and recovery of phosphate from low-grade dolomitic rock phosphate ore from Jhamarkotra, India." Mining, Metallurgy & Exploration 19, no. 3 (2002): 154–60. http://dx.doi.org/10.1007/bf03403168.

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35

Abdallah, Samah S., Khaled A. Selim, Mohamed M. A. Hassan, Atef El-amir, Mohamed G. Farghaly, and Samah M. Elsayed. "BIOPROCESSING OF NATURAL PHOSPHATE ORE WITH STAPHYLOCOCCUS AUREUS BACTERIA." Rudarsko-geološko-naftni zbornik 37, no. 5 (2022): 53–60. http://dx.doi.org/10.17794/rgn.2022.5.5.

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Phosphate ores are in high demand around the world because they are the primary raw materials used in the manufacturing of phosphatic fertilizers and other chemicals. Since the grade of the ore is gradually declining, it is becoming economically viable to mine and beneficiate numerous lower-grade deposits, and a significant number of precious minerals are discarded due to the inadequacy of new technological advances. Thus, biological processes are becoming more appealing in mineral processing due to their lower operating costs and potential applications to beneficiate low-grade complex ores th

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36

Xie, Fei, Jie Zhang, Jiyan Chen, Jianrui Wang, and Lin Wu. "Research on Enrichment of P2O5 from Low-Grade Carbonaceous Phosphate Ore via Organic Acid Solution." Journal of Analytical Methods in Chemistry 2019 (February 3, 2019): 1–7. http://dx.doi.org/10.1155/2019/9859580.

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The theory of using dilute organic acid solutions to leach the carbonaceous part from low-grade carbonaceous phosphate ore has been proposed by researchers as an effective approach to increase the proportion of P and to utilize the abundant low-grade resource. In this paper, a comprehensive experimental study was carried out to confirm the feasibility of organic acid leaching and investigate the optimized leaching conditions. Utilizing the low-grade carbonaceous phosphate ore produced in Zhijin, southwest of China, the effects of different types of acid, acid concentrations, reaction temperatu

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37

Yuan, Xiao Li, Wen Tang Xia, and Juan An. "Wasted Low Grade Iron Ore with High Phosphorus Reuse for Phosphate Removal from Aqueous Solution by Using a Factorial Design." Advanced Materials Research 852 (January 2014): 106–10. http://dx.doi.org/10.4028/www.scientific.net/amr.852.106.

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Low grade ore iron with high phosphorus (LGIOWHP) is used as an adsorbent to remove phosphate from aqueous solution. The orthogonal experiment of L16(45) was used to study the effects of experimental parameters on the phosphate removal rate. The important degree of the effects of parameters on the phosphate removal rate is as follows: initial pH > stirring speed > reaction time > reaction temperature > adsorbent dosage. The results show that the phosphate removal rate exceed 99% under the conditions of pH 5.6, temperature 65 °C, reaction time 75 min, particle size <0.147 mm, ini

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38

Kareeva, A. I., A. A. Bolysbek, U. B. Nazarbek, P. A. Abdurazova, and Y. B. Raiymbekov. "Comprehensive study of physico-chemical properties of low-grade phosphate raw materials." Engineering Journal of Satbayev University 145, no. 1 (2023): 25–31. http://dx.doi.org/10.51301/ejsu.2023.i1.04.

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The focus of the article is on the characterization of low-grade Chilisai phosphorites through a comprehensive analysis of their physicochemical properties. The structure of phosphorites of this deposit was studied using modern instrumental methods, including chemical and energy-dispersive analysis, IR-Fourier spectroscopy, X-ray diffraction analysis and mineralogical analysis. According to the results of chemical analysis, the material composition of nodular phosphorites was determined, and the elemental mass composition was determined by the method of energy dispersive analysis. The qualitat

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39

Boujlel, Haïfa, Ghassen Daldoul, Haïfa Tlil, et al. "The Beneficiation Processes of Low-Grade Sedimentary Phosphates of Tozeur-Nefta Deposit (Gafsa-Metlaoui Basin: South of Tunisia)." Minerals 9, no. 1 (2018): 2. http://dx.doi.org/10.3390/min9010002.

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The enrichment of the low-grade-phosphate ore of the Tozeur-Nefta deposit was investigated using scrubbing-attrition, ball grinding and anionic/cationic reverse flotation in order to separate phosphate-rich particles from their gangue. The choice of the beneficiation process was based on the petrographic, mineralogical and chemical analyses. The petrographic and mineralogical studies have revealed the abundance of phosphatic (carbonate-fluorapatite-CFA) particles) coupled with carbonates (calcite, dolomite,) and silicates (quartz, illite, kaolonite) that constitute the (endo/exo) gangue of the

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40

He, Xuan, and Run Huang. "Effect of different carbon sources on vacuum carbothermal reduction of low-grade phosphorus ore." Chemical Industry and Chemical Engineering Quarterly, no. 00 (2021): 17. http://dx.doi.org/10.2298/ciceq210219017h.

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In this study, the effect of different carbon sources on the carbothermal reduction of low-grade phosphate ore were examined using FactSage7.2 calculations and vacuum reduction experiments. The thermodynamic calculations showed that the trend of the effect for three types of reducing agents was generally consistent under 1 Pa pressure and 14% carbon dosage. The reduction effect was maximum when graphite was used as the reducing agent, and a maximum mass of P was obtained at 1250 ?C. The vacuum experiment results showed that the reduction and volatilization ratios of phosphate rock increased wi

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41

He, Xuan, and Run Huang. "Effect of different carbon sources on vacuum carbothermal reduction of low-grade phosphorus ore." Chemical Industry and Chemical Engineering Quarterly, no. 00 (2021): 13. http://dx.doi.org/10.2298/ciceq210219013h.

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In this study, the effect of different carbon sources on the carbothermal reduction of low-grade phosphate ore were examined using FactSage7.2 calculations and vacuum reduction experiments. The thermodynamic calculations showed that the trend of the effect for three types of reducing agents was generally consistent under 1 Pa pressure and 14% carbon dosage. The reduction effect was maximum when graphite was used as the reducing agent, and a maximum mass of P was obtained at 1250 ?C. The vacuum experiment results showed that the reduction and volatilization ratios of phosphate rock increased wi

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42

Kandil, Abdel-Hakim T., Hamed I. Mira, Mohamed H. Taha, and Mohamed F. Kamel. "Production of pure phosphoric acid from El-Sebaeya low-grade phosphate ore." Separation Science and Technology 52, no. 4 (2016): 679–90. http://dx.doi.org/10.1080/01496395.2016.1252778.

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43

Zafar, Zafar Iqbal, M. M. Anwar, and D. W. Pritchard. "A new route for the beneficiation of low grade calcareous phosphate rocks." Fertilizer Research 44, no. 2 (1995): 133–42. http://dx.doi.org/10.1007/bf00750803.

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Liu, Yuantao, Zhaohui Qin, and Bing Chen. "Influence of low-grade bauxite on the properties of magnesium phosphate cement." Construction and Building Materials 242 (May 2020): 118052. http://dx.doi.org/10.1016/j.conbuildmat.2020.118052.

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Gharabaghi, M., M. Noaparast, and M. Irannajad. "Selective leaching kinetics of low-grade calcareous phosphate ore in acetic acid." Hydrometallurgy 95, no. 3-4 (2009): 341–45. http://dx.doi.org/10.1016/j.hydromet.2008.04.011.

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Souza, Luiz Waldemar de Oliveira, Anibal de Sant'Anna Moretti, Fernanda Marcussi Tucci, Nedilse Helena de Souza, Paulo Ademar Martins Leal, and Nelson Haruo Anzai. "Phosphorus availability of rock phosphates as compared with feed-grade phosphates for swine." Revista Brasileira de Zootecnia 38, no. 1 (2009): 90–98. http://dx.doi.org/10.1590/s1516-35982009000100012.

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One hundred ninety two swine were used in a trial to assess the relative bioavailability of phosphorus (RBP) in six phosphate sources. Phosphates were three feed grade phosphates (FP), two made in Brasil, and one USA made, and three rock phosphate samples (RP) originated from two mines sites in Brasil, and one mine site in Israel. Levels of calcium, phosphorus and fluorine in RP were 29, 12 and 1.7% (RP source 1), 33, 14 and 1.4% (RP source 2), and 30, 14 and 3.6% (RP source 3), respectively. Pigs were fed a corn-soybean meal basal diet (18% CP, 0.95% Lys, 0.75% Ca, 0.37% P) or the basal diet

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Balestra, Roseli Marins, Alexandre Antunes Ribeiro, M. C. Andrade, Luiz Carlos Pereira, and Marize Varella. "Study of Titanium Surface Topography Influence on Biomimetic Coating Deposition." Materials Science Forum 727-728 (August 2012): 1622–27. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1622.

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Studies show that calcium phosphate coatings on titanium implants improve osseointegration at the implant-bone interface, due to the mineral biocompatibility. Titanium implants can be coated with calcium phosphates by a biomimetic precipitation method. This work studied a biomimetic method under a simplified solution with calcium and phosphorus ions. As substrates, commercially dense titanium sheet and macroporous titanium samples produced by powder metallurgy were used, both ASTM F67 grade 2. The substrates were submitted to chemical and heat treatment and then immersed in the solution for 10

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Anarbayev, Abibulla, Balzhan Kabylbekova, Zhakhongir Khussanov, Bakyt Smailov, Nurlan Anarbaev, and Yevgeniy Kulikov. "Research of the Process of Obtaining Monocalcium Phosphate from Unconditional Phosphate Raw Materials." ChemEngineering 9, no. 2 (2025): 39. https://doi.org/10.3390/chemengineering9020039.

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The article presents methods for processing low-grade phosphate raw materials from the Chilisay deposit using a circulation method to produce mineral fertilizers and feed monocalcium phosphate. A study was conducted on the process of obtaining high-quality monocalcium phosphate, and optimal parameters for the decomposition of low-grade phosphate raw materials were determined. Based on the research, it was established that for the decomposition of phosphate raw materials, phosphoric acid with a concentration of 36–42% P2O5 should be used; the recycle phosphoric acid rate should be 540–560% of t

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Boutaleb, Fatima Zahra, Nadia Boutaleb, Bouchaib Bahlaouan, et al. "Enhancing Hygiene and Technical Properties of Ceramic Tiles through Moroccan Phosphate Additives." European Scientific Journal, ESJ 20, no. 6 (2024): 104. http://dx.doi.org/10.19044/esj.2024.v20n6p104.

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This study offers a simple solution to manufacture ceramic tiles with good technical and hygienic properties. This solution consists of integrating the phosphate product from Morocco in the industrial formulation of ceramic tiles, to produce materials in compliance with the criterion of the ISO standard. For phosphate products, three grades were studied: HG-high grade, MG-medium grade, and LG-low grade. The results show that for materials containing these additives, there is both an effect of the concentration and type of additive on technical and hygienic properties. The mechanical property i

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Anawati, John, and Gisele Azimi. "Recovery and separation of phosphorus as dicalcium phosphate dihydrate for fertilizer and livestock feed additive production from a low-grade phosphate ore." RSC Advances 10, no. 63 (2020): 38640–53. http://dx.doi.org/10.1039/d0ra07210a.

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