The Leaching and Kinetics of Magnesium in Phosphate Ore Slurry during FGD Process | [Journal of Chemical Society of Pakistan • 2024]

Author(s):

1. Yu Feng: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China.

2. Qiong Wu: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China.

3. Dongdong Zhang: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China; National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming 650500, China.

4. Shijun Fu: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China.

5. Haixiang Ma: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China.

6. Xiaoxia Long: Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500, China.

7. Yonghui Li: Kunming Econ Technology Co., Ltd., Kunming 650607, China.

Abstract:

2National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Summary: The phosphate ore reserves in China are very large, but the overall quality is poor, and the magnesium impurity in phosphate ore is not conducive to the production of phosphorus chemical products. Recovery of sulfur dioxide from exhaust gas by phosphate slurry is a new desulfurization technology developed in recent years. During SO2 removal from flue gas by phosphate ore slurry, in phosphate ore magnesium can be simultaneously reduced. The magnesium leaching process could be described by the reaction-controlled shrinking core model. The leaching process of magnesium from phosphate ore slurry in FGD process includes 5 steps and 10 steps, which describes a gas-liquid-solid three-phase complete reaction process of removing magnesium from industrial flue gas desulfurization of phosphate slurry. In this study, a three-phase mass transfer kinetics model was established to find the controlling factors of the desulfurization reaction rate of the magnesium removal system of phosphate ore slurry in the FGD Process, and the research showed that the gas film resistance was the key control step, the solid film resistance was negligible. The reaction relation of desulfurization and removal of magnesium from phosphate slurry was obtained as k=3.766×e-10318.39/RT.

Page(s): 435-441

DOI: 10.52568/001553/JCSP

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 46, Issue: 5, Year: 2024

Keywords:

Magnesium , reactioncontrolled shrinking core model , Phosphate ore , flue gas desulfurization , reaction kinetics

References:

[1] Ning P. . .Based on the results above, the leaching process of 8. , : .

[2] . .magnesium in the FGD Process using phosphate ore Phosphate Ore Pulp, Ind. , 34 : 12.

[3] .2005 .slurry included 5 processes and 10 steps, and the (. , : .

[4] A. K. Özer M. S.,Gülaboğlu S.,Bayrakceken S. . .kinetic equation of magnesium could be obtained as 9. , : .

[5] D. D. Zhang A. B.,Wei G. F.,Qu G. F. .2002 .below: Gas Desulfurization with Phosphate Rock in a k=3. , 81(41) : .

[6] .2015 .chemical reaction. It is determined that the resistance Ore, Multipurp. , 5(1) : .

[7] Zheng Q. J.,Yang L. Y. M. . .of the solid film is negligible. The, : .

[8] .2023 .industry. And the influence of the diffusion Powder Technol. , 426(118656) : .

[9] Y. M. Yang Q. J.,Zheng A. B.,Yu A. B. . .resistance on the whole reaction system of 12. , : .

[10] Y. M. Yang Q. J.,Zheng A. B.,Yu A. B.,J. Zan S.,Yang J.,Zhang L. Y. M.,Yang L. Y. M.,J. X. Liao S. L.,Xiang S. L. .2023 .Hyaluronic acid encapsulated silver metal organic framework for the construction of a slow-controlled bifunctional nanostructure: Antibacterial and anti-inflammatory in intrauterine adhesion repair. Study on Process of Magnesium Removal from Phosphate Rock, 230(123361) : .

[11] .2014 .removal of gaseous NOx and SO2 by gas-phase 29. , (, 8) : .

[12] Y. L. Feng Z. C.,Yang Z. C. . .oxidation with ozone and wet scrubbing with sodium 16. , : .

[13] hydroxide .2020 .from a Copper Tailing with Hydrochloric Acid. , 381(122601) : .

[14] Nie Y. X.,Li S.,Wu C. J. .2013 .. Efficient Removal of Mine, 42(158) : .

[15] C. S. Yan J. W.,Zhu X. G.,Fan X. G. . .SO2 from Flue Gas with Phosphate Rock Slurry and. , : .

[16] Res. .2018 .. , 2(15138) : 8.

[17] Liu S. Y.,Nengzi L. C. .2014 .. , : .

[18] Sun S. L.,Ding S. J.,Su S. J. . .SO2 absorption by carbide slag in spray tower. J. Chem, : .

[19] Ind. Eng. .2012 .Flue Gas Desulfurization with Manganese Carbonate. , 63(1543) : .

[20] Yu S. Q. .2016 .. Ph.D. Thesis, 35(296) : .

[21] Wastes Industrial,Yan Q. C. . .Mixture Absorbents for FGD, 19. Ph.D. Thesis, : .

[22] Zhejiang University .2002 .desulphurization with pyrolusite slurry. , : .

[23] Sun W. S.,Wu Z. B.,Tan T. E. .2012 .. , : .

[24] . .on limestone dissolution in flue gas desulfurization process, 20. Lee, Fick's law, green-kubo formula, and Heisenberg's. , : .

[25] Environ China .2000 .equation of motion. Phys. Rev. Lett., 85(2422) : .

[26] Ore Phosphate,Slurry Phosphate .2007 .. Fresen. Environ. Bull., 136(221) : .

[27] Zhu X. F. .2018 .. Ph.D. Thesis, : .

[28] Desulfurization by Phosphate Wet .2002 .Pulp(Ⅱ), Ind. , : .

[29] .2006 .. , 35(10) : .

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