کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990804 | 1516131 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on the recovery of gold and silver from cyanide tailings using chlorination roasting process
ترجمه فارسی عنوان
بررسی بازیابی طلا و نقره از باند های سیانید با استفاده از فرآیند کوره کردن کلر
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کلمات کلیدی
فلز گرانبها، کباب کردن کلر، ضایعات سیانید، تجزیه و تحلیل ترمودینامیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
In this work, a chlorination roasting method for the extraction of precious metals (gold and silver) from the cyanide tailings (CT) was investigated. The decomposition mechanism of the CaCl2 used as chloride agent was presented during the chlorination roasting. The Au and Ag recovery as high as 91.6% and 54.7% under the optimum experiment conditions would be achieved. The optimal process conditions were identified to be a CaCl2 content 4%, chlorination temperature 1323â¯K and chlorination duration of 2â¯h. The microstructures of CT before and after roasting were examined by using scanning electron microscopy (SEM), and the volatilization process of the chloride of Au and Ag was assessed. The chlorination behaviors of all the phases in the CT in air atmosphere was analyzed using the thermogravimetric analysis (TGA), and the phase transformation of the main phase during roasting were analyzed by using X-ray diffraction (XRD). The chlorination roasting process shows unique advantage for treating the secondary sources of CT, additionally being environmentally benign.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 763, 30 September 2018, Pages 241-249
Journal: Journal of Alloys and Compounds - Volume 763, 30 September 2018, Pages 241-249
نویسندگان
Haoyu Li, Aiyuan Ma, C. Srinivasakannan, Libo Zhang, Shiwei Li, Shaohua Yin,