کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6658955 1425527 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use of amino acids for gold dissolution
ترجمه فارسی عنوان
استفاده از اسیدهای آمینه برای انحلال طلا
کلمات کلیدی
اشباع طلا، جایگزین های سیانید، حلال الی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
As oxidants under alkaline conditions. To analyze the kinetics of leaching, tests were performed using electrical contacts pins and sheets of pure gold to avoid the effects of pore diffusion. The efficiency of each oxidant was evaluated, for concentrations of 0.004, 0.01 and 0.03 M, at pH values of 9.4 and 11. At the end of each test, the solid residue was analyzed to determine the total grade and percentage of metal extraction. The experimental results indicated that the percentage of gold extraction was affected by the oxidant concentration and the pH. Furthermore, it improves with the presence of Cu2+ ions, increasing by 100% for glycine and approximately 6 fold for glutamate as compared to glycine solutions. In assessing the percentage of gold extraction in the different conditions at 25 and 40 °C, it was observed that the kinetics of extraction is sensitive to temperature change, which suggests that the leach is chemically controlled.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 177, May 2018, Pages 79-85
نویسندگان
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