این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Mining and Environment، جلد ۱۶، شماره ۶، صفحات ۱۸۸۱-۱۸۹۵
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Surface Enrichment in Malachite Sulfurization Flotation: Adsorption Mechanisms and Performance Optimization
چکیده انگلیسی مقاله This work investigates the surface enrichment of malachite during sulfurization flotation to enhance copper recovery. The goal is to improve flotation efficiency by modifying malachite’s surface properties through sulfurization, using sodium sulfide as the sulfurizing agent. The effects of pre-treatment reagents on flotation recovery were evaluated, focusing on their impact on the surface chemistry of malachite. The findings indicated that malachite treated with ammonium sulfate ((NH₄)₂SO₄) exhibited superior flotation recovery compared to ammonium phosphate ((NH₄)₃PO₄), achieving an optimal recovery rate of 87.5%. FESEM-EDS and ToF-SIMS analyses revealed a significant increase in sulfur species on the surface, promoting the formation of copper sulfide (CuS) films and enhancing the mineral's reactivity during flotation. Theoretical solution chemistry calculations corroborated these findings, showing that ammonium salt treatments facilitate the formation of copper-ammonium complexes, stabilizing copper ions in solution and preventing their precipitation as copper hydroxides or carbonates. By maintaining copper in a stable reactive form, these complexes improve flotation efficiency. Both theoretical calculations and experimental observations confirm that stabilizing copper ions is crucial for enhancing flotation, ensuring copper remains available for interaction with flotation reagents and ultimately, improving copper recovery. The integration of theoretical and experimental approaches enhances the understanding of the sulfurization process and provides an optimized method for improving flotation performance and copper recovery.
کلیدواژه‌های انگلیسی مقاله Malachite,hydrolysis reaction,copper–ammonium complex,surface enrichment,Adsorption
نویسندگان مقاله Ayman M. Ibrahim |
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Metal Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

Han Wang |
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Metal Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

Nazar Mekawi |
Department of Mining Engineering, Faculty of Engineering, University of Khartoum, Khartoum 11115, PR Sudan

Jaber A. Yousif |
Department of Mining Engineering, Faculty of Engineering, Eldaein University, Eldaein 63312, PR Sudan

Emadeldin Adam |
Department of Mining Engineering, Faculty of Engineering Science, Omdurman Islamic University, 14411, Khartoum, PR Sudan

Alfarouq Alnoor |
Department of Mining Engineering, Faculty of Engineering Science, Omdurman Islamic University, 14411, Khartoum, PR Sudan

Mohammed Kabashi |
Department of Mining Engineering, Faculty of Engineering Science, Omdurman Islamic University, 14411, Khartoum, PR Sudan

Dianwen Liu |
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Metal Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

نشانی اینترنتی https://jme.shahroodut.ac.ir/article_3575_b935f67287422ea402faf7ef0bd490d3.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات