沉金后液回收硒、碲还原剂的选择

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 27; no. 4; pp. 917 - 924
Main Author 张福元;郑雅杰;彭国敏
Format Journal Article
LanguageEnglish
Published 2017
Subjects
沉金后液;水合肼;盐酸羟胺;硒;碲;回收率
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Bibliography:This paper focused on investigating high-efficient reductants of recovering selenium and tellurium from degoldizedsolution of copper anode slimes.Firstly,the effect of various reductants on recovery rates of Se and Te was investigated based onthermodynamic analysis of various metallic ions in degoldized solution.Secondly,the single factor experiments were made toinvestigate the effect of the process parameters on recovering Se and Te with hydrazine hydrate.Finally,the hydroxylaminehydrochloride was added to intensify the extraction efficiencies of Se and Te.The results indicated that hydrazine hydrate was themost suitable reductant,and the recovery rates of Se and Te are71.23%and76.50%,respectively;the recovery rates of Se and Tewere92.07%and97.81%,respectively,under the optimal process conditions of hydrazine hydrate dosage of0.2133mol/L,H+concentration of4.305mol/L,reaction temperature of85°C and reaction time of5h;the recovery rate of Se was97.59%,and that Tereached up to100%when hydroxylamine hydrochloride dosage was1.5116mol/L.
43-1239/TG
degoldized solution; hydrazine hydrate; hydroxylamine hydrochloride; selenium; tellurium; recovery rate
ISSN:1003-6326