کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5144376 | 1496863 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasound-assisted leaching of rare earths from the weathered crust elution-deposited ore using magnesium sulfate without ammonia-nitrogen pollution
ترجمه فارسی عنوان
اشباع سونوگرافی از خاک های خاکی کمیاب از پوسته پوسته پوسته پوسته شده با استفاده از سولفات منیزیم بدون آلودگی آمونیاک-نیتروژن
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
The in situ leaching process of China's unique ion-adsorption rare earth ores has caused severe environmental damages due to the use of (NH4)2SO4 solution. This study reports that magnesium sulfate (MgSO4) as a leaching agent would replace (NH4)2SO4 by ultrasonically assisted leaching to deal with the ammonia-nitrogen pollution problem and enhance leaching process. At leaching conditions of 3Â wt% MgSO4 concentration, 3:1Â L/S ratio and 30Â min, the total rare earth leaching efficiency reaches 75.5%. Ultrasound-assisted leaching experiments show that the leaching efficiency of rare earths is substantially increased by introducing ultrasound, and nearly completely leached out after two stage leaching process. Thus, ultrasonic-assisted leaching process with MgSO4 is not only effective but also environmentally friendly, and beneficial to leach rare earths at laboratory scale.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 41, March 2018, Pages 156-162
Journal: Ultrasonics Sonochemistry - Volume 41, March 2018, Pages 156-162
نویسندگان
Shaohua Yin, Jiannan Pei, Feng Jiang, Shiwei Li, Jinhui Peng, Libo Zhang, Shaohua Ju, Chandrasekar Srinivasakannan,