A Mixing Washer Optimization for Salt Purification
DOI:
https://doi.org/10.55981/mipi.2025.9223Keywords:
Coarse Salt, Magnesium, Mixing Washer, NaCl , Salt standard, SolidWorks Flow SimulationAbstract
Conventional salt production from seawater and solar evaporation has the drawback such as contains many impurities of magnesium, calcium and mud. The purification process is necessary to achieve the standard quality requirements for consumption and industrial salt. A simple salt purification process was carried out by using saturated salt solution through a mixing washer. This research focuses on design and optimization of mixing washer. During the washing process, baffles act as flow restrictors, to reduce swirling and encourage vertical fluid circulation. This equipment was mainly used in the mixing and suspension making process of solids using vertical cylindrical tanks where vortexes are easily formed, regardless of the type of impeller. The baffle strength was tested and confirmed using CFD simulation. The result of the wooden baffle was strong enough to be used in the mixing washer with a diameter of 850mm. The optimum mixing washing process was obtained at 200 rpm for 10 minutes. The coarse salt could be increased in purity from 88% NaCl to 98%. Mg content was reduced to 0.7% respectively.
References
[1] K. Sumada, R. Dewati, and Suprihatin, “Improvement of seawater salt quality by hydro-extraction and re-crystallization methods,” in Journal of Physics: Conference Series, Institute of Physics Publishing, Feb. 2018. doi: 10.1088/1742-6596/953/1/012214.
[2] M. Efendy, “Garam Rakyat Potensi dan Permasalahan,” UTM Press, pp. 1–190, 2012.
[3] Ifan Suhelmi Ridlo, D. Sumberdaya, M. Kelautan, and D. Perikanan, “Riset Dan Pengembangan Teknologi Garam Di Pusat Riset Kelautan,” Pusat Riset Kelautan, 2020.
[4] H. Ercoşkun, “Impurities of natural salts of the earth,” Food Addit Contam Part B Surveill, vol. 16, no. 1, 2023, doi: 10.1080/19393210.2022.2114016.
[5] Redjeki Sri and Iriani, “Industrial Salt Production From People’s Salt Produksi Garam Industri Dari Garam Rakyat,” Jurnal Teknik Kimia, vol. 16, no. 1, pp. 35–38, 2021.
[6] B. Ali et al., “Refining NaCl: Elevating Salt’s quality from coarse to industrial and Pharmacy grade through innovative hydroextraction techniques,” Case Studies in Chemical and Environmental Engineering, vol. 9, Jun. 2024, doi: 10.1016/j.cscee.2024.100752.
[7] H. Jiang, S. Yuan, H. Liu, W. Li, and X. Zhou, “Numerical analysis and optimization of key parts in the stirred tank based on solid-liquid flow field,” Sci Prog, vol. 105, no. 1, Jan. 2022, doi: 10.1177/00368504211067200.
[8] T. Jirout and F. Rieger, “Impeller design for mixing of suspensions,” Elsevier, Chemical Engineering Research and Design, vol. 89, no. 7, pp. 1144–1151, Jul. 2011, doi: doi.org/10.1016/j.cherd.2010.12.005.
[9] S. Asiri, “Design and Implementation of Differential Agitators to Maximize Agitating Performance,” International Journal of Mechanics and Applications, vol. 2, no. 6, 2012, doi: 10.5923/j.mechanics.20120206.01.
[10] Hall Stephen, “16_Blending_and_Agitation,” in Rule of Thumb for Chemical Engineers, , 5 Edition., vol. 5th Edition, 2012, ch. 16. Accessed: Jul. 10, 2024. [Online]. Available: https://shop.elsevier.com/books/rules-of-thumb-for-chemical-engineers/hall/978-0-12-387785-7
[11] John Whittle, “Tank baffle design calculations,” Euromixers, [Online]. Available: https://www.euromixers.co.uk/links-innovative-mixing-solutions/
[12] D. H. Didane, M. N. A. Bajuri, M. I. Boukhari, and B. Manshoor, “Performance Investigation of Vertical Axis Wind Turbine with Savonius Rotor using Computational Fluid Dynamics (CFD),” CFD Letters, vol. 14, no. 8, 2022, doi: 10.37934/cfdl.14.8.116124.
[13] Scribs, “SNI 8207-2016 Garam Industri Aneka Pangan,” Badan Standardisasi Nasional. Accessed: Nov. 24, 2024. [Online]. Available: https://www.scribd.com/document/362755683/003-Sni-8207-2016-Garam-Industri-Aneka-Pangan
[14] A. Martina and Witono Judy Retti, “Pemurnian Garam Dengan Metode Hidroekstraksi Batch,” Lembaga Penelitian dan Pengabdian kepada Masyarakat, vol. III, pp. 1–27, Mar. 2014.
[15] B. Iskandriawan, Jatmiko, A. Safaat, and J. A. Nugraha, “Air Velocity And Pressure Drop Exploration Inside Pipe Frame Of Air Purifier Bicycle Using Numerical Analysis,” Journal of Engineering Science and Technology, vol. 15, no. 6, 2020.
[16] A. R. Khopkar, G. R. Kasat, A. B. Pandit, and V. V. Ranade, “Computational fluid dynamics simulation of the solid suspension in a stirred slurry reactor,” Ind Eng Chem Res, vol. 45, no. 12, 2006, doi: 10.1021/ie050941q.
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