کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6659395 | 1425803 | 2014 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of three N-based auxiliary additives during the electrodeposition of manganese
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
In the presence of the SO2-type main additive, the effect of three N-based auxiliary additives, including ammonium thiocyanate, thiourea and polyacrylamide, during the electrodeposition of manganese was investigated. We found that ammonium thiocyanate decreased the amount of S-polyanions (SO32â and HSO3â) in the system, thereby exerting negative effects on the surface that led to low current efficiency. Thiourea (BT) maintained the S-polyanion distribution on the electrode interface, and the high-valence manganese compounds were promptly reduced to Mn2 +. Consequently, energy and material consumption decreased. Polyacrylamide (PAM) prevented metal sulfides from diffusing into the metallic lattice on the solid-liquid interface, resulting in white, lightweight deposited manganese. Moreover, PAM-BT mixture auxiliary additive helped saving energy and materials during the electrodeposition process and improved product quality, with both processes working synergistically. The mechanism of three auxiliary additives during the electrodeposition was studied. Our results may provide a theoretical guidance for the selection of auxiliary additives during the metal electrodeposition process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mineral Processing - Volume 130, 10 July 2014, Pages 34-41
Journal: International Journal of Mineral Processing - Volume 130, 10 July 2014, Pages 34-41
نویسندگان
Lifeng Ding, Xing Fan, Jun Du, Zuohua Liu, Changyuan Tao,