Recovery of molybdenum from alkaline leach solution of spent hydrotreating catalyst by solvent extraction using methyl tricaprylammonium hydroxide

被引：39

作者：

Imam, D. M. ^{[1
]}

El-Nadi, Y. A. ^{[1
]}

机构：

[1] Atom Energy Author, Hot Labs Ctr, Cairo 13759, Egypt

来源：

HYDROMETALLURGY | 2018年 / 180卷

关键词：

Molybdenum(VI); Solvent extraction; Separation; Spent catalyst; LIQUID-LIQUID-EXTRACTION; SELECTIVE EXTRACTION; VANADIUM; SEPARATION; TUNGSTEN; MOLYBDATE; ALUMINUM; LIQUORS; RHENIUM; RESIDUE;

D O I：

10.1016/j.hydromet.2018.07.022

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Detailed extraction of molybdenum(VI) from alkaline sodium hydroxide solution by quaternary ammonium salt (Aliquat 336, R3CH3NOH) mixed with kerosene was investigated. The different factors affecting the extraction system such as time of shaking, alkali, extractant, metal ion concentrations, temperature and the organic to aqueous volume phase ratio were studied in order to obtain the best conditions for separating molybdenum(VI). Based on the slope analysis method, the extracted molybdenum(VI) species was suggested to be [(R3CH3N)(2)MoO4]. Increasing the temperature was found to slightly increase the extraction affinity indicating the endothermic character of the process. Stripping was successfully accomplished by 2.0 M NaOH solution. The extraction procedures were applied to recover molybdenum(VI) from a sample of spent hydrotreating catalyst containing a significant amount of Al(III), Cu(II) and Ni(II). The recovery yield was found to be 96% and a hydrometallurgical fiowsheet was also proposed.

引用

页码：172 / 179

页数：8

共 41 条

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