Experimental results of copper extraction from low-copper polymetallic concentrates

Authors

  • Narandalai Byamba-Ochir Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Khulan Byambasuren Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Narangarav Tumun-Ulzii Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Sarantsetseg Purevsuren Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Ulziibadrakh Erdenebat Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Ariunaa Garnaad Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Enkhtuul Surenjav Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Altansukh Batnasan Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia
  • Nyamdelger Shirchinnamjil Laboratory for Chemistry and Technology of Critical Metals, Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13260, Mongolia

DOI:

https://doi.org/10.5564/bicct.v13i13.5218

Keywords:

cyclic voltammetry, copper recovery, purity, copper deposition rate, current density

Abstract

The copper sulfide concentrate of copper was oxidizing roasting at low temperatures, and the resulting copper compound was dissolved in water and sulfuric acid solutions, and then electrolysis process was used to recovery high-purity metallic copper (Cu0). Copper (Cu2+) dissolved in water and acid solutions was extracted with organic reagent, copper was purified from unusefull impurities, and electrolyte solutions (CuSO4) with a high copper concentration of 2764 mg/l were prepared. The electrolysis experiment of copper (Cu2+) was studied depending on the copper concentration, contacting time, and current density. The electrochemical properties of the copper (Cu2+) electrolytic solutions were determined by a three-electrode cyclic voltammetry instrument, and the cathode peak peak reached -0.3 V, and the concentration of copper ions in the solution decreased, and metallic copper was deposited on the cathode surface. In the electrochemical experiments for recovery of cathodic copper from copper sulfate solution at a current density of 0.03 A/cm², the recovery of metallic copper was 70.4%, the copper mass flux on the cathode surface was 30.5 cm/s, and the purity reached 99.8%. The properties of the cathodic copper were determined by X-ray diffractometry, electron microscopy, inductively coupled plasma spectroscopy, and chemical analysis methods.

Зэсийн агуулга багатай полиметаллын баяжмалаас зэс ялган авах туршилтын үр дүн

Хураангуй: Зэсийн бага агуулгатай полиметаллын баяжмалыг нам температурт исэлдүүлэн шатааж, үүссэн зэсийн нэгдлийг ус болон хүхрийн хүчлийн уусмалд уусгаад электролизын аргаар өндөр цэвэршилттэй металл зэс (Cu0) ялгах судалгаа хийв. Ус болон хүчлийн уусмалд ууссан зэс (Cu2+)-ийг органик урвалжаар хандлан, зэсийг хольц элементүүдээс салгаж, зэсийн концентрац ихтэй буюу 2764 мг/л хүртэлх концентрацтай электролит уусмалууд (CuSO4)-ыг бэлтгэсэн. Электролизын туршилтыг зэс (Cu2+)-ийн агуулга, хугацаа, гүйдлийн нягтаас хамааруулан судлав. Зэс (Cu2+)-ийн электролит уусмалуудын цахилгаан химийн шинж чанарыг гурван электродтой цикловольтаметр багажаар тодорхойлоход катодын пикийн оргил цэг -0.3 В хүрч, уусмал дахь зэсийн ионуудын концентрац бууран, катодын гадаргуу дээр метал зэс хуримтлагдаж байсан. Зэсийн сульфатын уусмалаас катодын зэс ялган авах туршилтын гүйдлийн нягт 0.03 А/см² үед металл зэсийн ялгаралт 70.4 %, зэсийн катод дээр суух хурд 30.5 см/с, цэвэршилт 99.8 %-д хүрсэн. Ялган авсан катодын зэсийн шинж чанарыг рентгендифракц, электрон микроскоп, индукцийн холбоост плазмын спектроскопын болон химийн шинжилгээний аргуудаар тодорхойлов.

Түлхүүр үг: цикловольтаметр, зэс авалт, цэвэршилт, зэс суух хурд, гүйдлийн нягт

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Published

2025-11-12

How to Cite

Byamba-Ochir, N., Byambasuren, K., Tumun-Ulzii, N., Purevsuren, S., Erdenebat, U., Garnaad, A., … Shirchinnamjil, N. (2025). Experimental results of copper extraction from low-copper polymetallic concentrates. Bulletin of the Institute of Chemistry and Chemical Technology, 13(13), 17–28. https://doi.org/10.5564/bicct.v13i13.5218

Issue

No. 13 (2025)

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Copyright (c) 2025 Narandalai Byamba-Ochir, Khulan Byambasuren, Narangarav Tumun-Ulzii, Sarantsetseg Purevsuren, Ulziibadrakh Erdenebat, Ariunaa Garnaad, Enkhtuul Surenjav, Altansukh Batnasan, Nyamdelger Shirchinnamjil

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