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Solis-Rdoriguez, R., Bello-Teodoro, S., Moreno-Baez, A., Galvan-Tejada, J. I, Arceo-Olague, J. G, Luna-Garcia, H., Alonso-Gonzalez, O.. (1397). Removal of Te and Se anions in alkaline media in presence of cyanide by quaternary ammonium salts. , 9(2), 311-317. doi: 10.22044/jme.2018.6718.1493
R. Solis-Rdoriguez; S. Bello-Teodoro; A. Moreno-Baez; J. I Galvan-Tejada; J. G Arceo-Olague; H. Luna-Garcia; O. Alonso-Gonzalez. "Removal of Te and Se anions in alkaline media in presence of cyanide by quaternary ammonium salts". , 9, 2, 1397, 311-317. doi: 10.22044/jme.2018.6718.1493
Solis-Rdoriguez, R., Bello-Teodoro, S., Moreno-Baez, A., Galvan-Tejada, J. I, Arceo-Olague, J. G, Luna-Garcia, H., Alonso-Gonzalez, O.. (1397). 'Removal of Te and Se anions in alkaline media in presence of cyanide by quaternary ammonium salts', , 9(2), pp. 311-317. doi: 10.22044/jme.2018.6718.1493
Solis-Rdoriguez, R., Bello-Teodoro, S., Moreno-Baez, A., Galvan-Tejada, J. I, Arceo-Olague, J. G, Luna-Garcia, H., Alonso-Gonzalez, O.. Removal of Te and Se anions in alkaline media in presence of cyanide by quaternary ammonium salts. , 1397; 9(2): 311-317. doi: 10.22044/jme.2018.6718.1493

Removal of Te and Se anions in alkaline media in presence of cyanide by quaternary ammonium salts

Journal of Mining and Environment
مقاله 2، دوره 9، شماره 2، تیر 2018، صفحه 311-317    اصل مقاله (856.33 K)
نوع مقاله: Case Study
شناسه دیجیتال (DOI): 10.22044/jme.2018.6718.1493
نویسندگان
R. Solis-Rdoriguez1؛ S. Bello-Teodoro1؛ A. Moreno-Baez2؛ J. I Galvan-Tejada2؛ J. G Arceo-Olague2؛ H. Luna-Garcia2؛ O. Alonso-Gonzalez* 1
1Academic Unit of Engineering, Autonomous University of Zacatecas "Francisco García Salinas", Zacatecas, Mexico
2Academic Unit of Electrical Engineering, Autonomous University of Zacatecas ''Francisco García Salinas", Zacatecas, Mexico
چکیده
Precious metals are currently associated with selenium (naumannite, Ag2Se) and tellurium (calaverite, AuTe2; sylvanite, (Au,Ag)2Te4) to form species refractory to cyanidation. The aim of this preliminary work was to study the use of the solvent extraction technique to recover tellurium and selenium ions from a synthetic solution similar to the cyanidation effluents to recycle the free cyanide back to the process. For the extraction of the Se and Te anions, the use of quaternary amines as extractants was evaluated (tallow trimethyl ammonium chloride, Quartamin TPR; hexadecyl trimethyl ammonium chloride, Amine F; and trioctyl methyl ammonium chloride, Aliquat 336) employing nonylphenol as a modifier in the organic phase (iso-octane). The results obtained showed that the extraction was strongly affected by the pH and that it was possible to recover up to 83% of Se and 10% of Te with Quartamin TPR from two synthetic solutions containing 23 mg/L of Te and 20 mg/L of Se with a molar cyanide:metal ratio of 1:4 at pH 11, a ratio of aqueous/organic (A/O) = 1 (V/V) and an extractant concentration of 0.022 mol/L. A maximum distribution coefficient (D) of 4.97 was obtained at pH 11. The McCabe-Thiele diagram indicates that two theoretical extraction stages are necessary to obtain a good extraction of Se complexes using Quartamin TPR.
کلیدواژه‌ها
Solvent extraction؛ Tellurium Extraction؛ Selenium Extraction
آمار
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