جمعه 14 اردیبهشت 1403
| عنوان مقاله | |
| عنوان مقاله |
Effect of nettle plant extract on the overconsumption diminution of zinc as sacrificial metal during cementation of copper |
| عنوان فارسی مقاله | تأثیر عصاره گیاه گزنه بر کاهش مصرف بیش از حد روی به عنوان فلز قربانی هنگام سیمان کردن مس |
| مشخصات مقاله انگلیسی | |
| نشریه: Elsevier |
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| سال انتشار |
2019 |
| عنوان مجله |
Minerals Engineering |
| تعداد صفحات مقاله انگلیسی | 7 |
| رفرنس | دارد |
| تعداد رفرنس | 41 |
| چکیده مقاله | |
| چکیده |
In this work, we study the cementation reaction of copper by zinc in acid sulphate media in the presence of nettle plant extract ( Urtica dioica L.). The e ff ect of some parameters, namely concentration of nettle extract, tem- perature and initial copper ions concentration have been studied. This extract obtained by re fl uxed technique in water, has proved to be a good inhibitor of the parasitic reactions of hydrogen and dissolved oxygen that ac- companied the cementation process in acidic media. These reactions are the main causes of the zinc over- consumption and the decrease of copper recovery e ffi ciency. The results showed that the maximum of copper recovery e ffi ciency (85.2%) was obtained at the optimal concentration of nettle extract, equal to 1.5 g·L − 1 .At this concentration, we recorded a decrease in zinc overconsumption of about 43.5% compared to the solution without additives. The rate of the cementation reaction increases with increasing temperature up to 37 °C and this e ff ect is more pronounced when the extract is present in solution. |
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