کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8012249 | 1516941 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of bio-oxidation of refractory arsenopyritic gold ore by adding pyrolusite in bioleaching system
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancement of bio-oxidation of refractory arsenopyritic gold ore by adding pyrolusite in bioleaching system Enhancement of bio-oxidation of refractory arsenopyritic gold ore by adding pyrolusite in bioleaching system](/preview/png/8012249.png)
چکیده انگلیسی
Pyrolusite was added in the bioleaching process to enhance the bio-oxidation process. Bioleaching tests at different dosages of pyrolusite ore, pH and inoculation amounts of Acidithiobacillus ferrooxidans were studied. The results showed that the time of the bio-oxidation process was decreased obviously and the arsenic leaching rate reached 94.4% after the bioleaching. The bio-oxidation of arsenopyrite and the effective extraction of manganese from pyrolusite were achieved by the bioleaching process. After bioleaching, the leaching rate of gold from the reaction residues reached 95.8% by cyanide leaching. In the bio-oxidation process, pyrolusite increased the redox potential of the solution to accelerate the bioleaching rate. The experiment showed that there were two reaction modes in the bioleaching process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 9, September 2016, Pages 2479-2484
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 9, September 2016, Pages 2479-2484
نویسندگان
Xu ZHANG, Ya-li FENG, Hao-ran LI,