Scholarlink

<p>We develop a&#xa0;complex technology of separate processing of fine dust including the procedure of preliminary firing of dust with removal of arsenic from the technological scheme with subsequent application of a&#xa0;hydrometallurgical scheme for the extraction of copper and rhenium: sulfuric-acid leaching of cinder with cementation separation of copper with iron, and extraction of rhenium from the solution. Complex analytical studies of the intermediate and final products were carried out by the methods of atomic-emission spectrometry with inductively coupled plasma and&#xa0;X-ray phase analysis. The compositions of liquid solutions were determined by the method of chemical analysis. The rhenium contents in the original solutions and extraction products were determined by the methods of colorimetric and chemical analyses. This guaranteed the possibility of step-by-step quality control of the obtained products in the course of realization of the technological cycle of processing. As a&#xa0;result of laboratory investigations, we established the following optimal parameters of copper cementation: a&#xa0;temperature of 333°K (60 °C), <i>S</i>:<i>L</i> = 1.5, and a&#xa0;duration of the process equal to 60 min for which we obtained powdered cement copper with the following composition (wt.%): 82.0 Cu, 09.27 Pb, 1.49 Zn, 0.19 As, 0.72 Fe, 0.03 Re, 3.43 O<sub>2</sub>; balance 11.89. The extraction of copper into a&#xa0;commercial product was as large as ~98%. We obtain new data on the extraction of rhenium from sulfuric-acid solutions of the process of cementation by using an extractant containing (wt. %): 10&#xa0;trialkylamine (TAA), 80&#xa0;kerosene, and 10&#xa0;di-2-ethylhexanol. On the basis of the indicated components, it is possible to choose the composition of the extractant for the processes of extraction of dusts of different types and compositions. We obtained commercial ammonium perrhenate with a&#xa0;rhenium content of 69.17% corresponding to the AR‑0 grade. The end-to-end extraction of rhenium into ammonium perrhenate is as high as 93%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Extraction of copper and rhenium from the sulfuric-acid leaching solutions of cinder

  • 期刊论文

  • 发表日期：

    2025年9月29日

查看全文
  • N. K. Dosmukhamedov,
  • Ye. Ye. Zholdasbay,
  • G. M. Koishina,
  • Y. B. Icheva,
  • K. S. Myrzabekova

摘要

We develop a complex technology of separate processing of fine dust including the procedure of preliminary firing of dust with removal of arsenic from the technological scheme with subsequent application of a hydrometallurgical scheme for the extraction of copper and rhenium: sulfuric-acid leaching of cinder with cementation separation of copper with iron, and extraction of rhenium from the solution. Complex analytical studies of the intermediate and final products were carried out by the methods of atomic-emission spectrometry with inductively coupled plasma and X-ray phase analysis. The compositions of liquid solutions were determined by the method of chemical analysis. The rhenium contents in the original solutions and extraction products were determined by the methods of colorimetric and chemical analyses. This guaranteed the possibility of step-by-step quality control of the obtained products in the course of realization of the technological cycle of processing. As a result of laboratory investigations, we established the following optimal parameters of copper cementation: a temperature of 333°K (60 °C), S:L = 1.5, and a duration of the process equal to 60 min for which we obtained powdered cement copper with the following composition (wt.%): 82.0 Cu, 09.27 Pb, 1.49 Zn, 0.19 As, 0.72 Fe, 0.03 Re, 3.43 O2; balance 11.89. The extraction of copper into a commercial product was as large as ~98%. We obtain new data on the extraction of rhenium from sulfuric-acid solutions of the process of cementation by using an extractant containing (wt. %): 10 trialkylamine (TAA), 80 kerosene, and 10 di-2-ethylhexanol. On the basis of the indicated components, it is possible to choose the composition of the extractant for the processes of extraction of dusts of different types and compositions. We obtained commercial ammonium perrhenate with a rhenium content of 69.17% corresponding to the AR‑0 grade. The end-to-end extraction of rhenium into ammonium perrhenate is as high as 93%.