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Vacuum Drying of Magnesium Hydroxide using Steelmaking Ladle Hot Air as an Alternative Heat Source | ||
| Chemical Process Design | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 30 فروردین 1405 اصل مقاله (770.58 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22111/cpd.2026.54993.1086 | ||
| نویسندگان | ||
| Afsaneh Sadeghi Goghari؛ Hossein Maghsoudi* ؛ Ahmad Ghazanfari Moghaddam؛ Kazem Jafarinaeimi | ||
| Biosystems Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran. | ||
| چکیده | ||
| The growing application of magnesium in strategic industries underscores the need for sustainable and energy-efficient routes for producing high-purity magnesium compounds. In this study, a vacuum drying system was designed and fabricated to enable the recovery of magnesium hydroxide from desalination effluent, and its drying performance was evaluated. Experiments were carried out at three operating pressures (0.10, 0.05, and 0.02 bar) and three temperatures (150, 210, and 250°C), utilizing hot air recovered from steelmaking ladles as an industrial waste-heat source. The results showed that reducing the operating pressure significantly decreased the drying time while enhancing the mass transfer rate. At 0.02 bar, the time required to reach the target final moisture content was markedly shorter than that at 0.10 bar, with an average reduction of approximately 50%. Moreover, increasing the drying temperature from 150 to 250°C led to a substantial acceleration of the drying process, resulting in an overall reduction of 69.2% in total drying time. Drying kinetics were analyzed using logarithmic and two-term exponential models. Statistical evaluation revealed that the logarithmic model provided superior predictive performance, exhibiting a high coefficient of determination (R² =0.99) and lowest root mean square error (RMSE=0.012) across all operating conditions. Overall, this study demonstrates that the integration of vacuum drying with the utilization of steelmaking waste heat represents an efficient and sustainable approach for the recovery of magnesium hydroxide from desalination effluents, offering both technical effectiveness and industrial relevance. | ||
| کلیدواژهها | ||
| Drying؛ Desalination Brine؛ Statistical analysis؛ Mathematical modeling | ||
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آمار تعداد مشاهده مقاله: 18 تعداد دریافت فایل اصل مقاله: 7 |
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