Thiocyanate solutions in gold technology

被引：66
作者：
Kholmogorov, AG
Kononova, ON
Pashkov, GL
Kononov, YS
机构：
[1] Acad Sci, Siberian Dept, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia
[2] Krasnoyarsk State Univ, Dept Chem, Krasnoyarsk 660041, Russia
来源：
HYDROMETALLURGY | 2002年 / 64卷 / 01期
关键词：
thiocyanate solutions; gold; carbon adsorbents; ion exchangers; thiocarbamide;
D O I：
10.1016/S0304-386X(02)00005-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The scope for using KSCN solutions in the field of gold leaching from chemical preparation products of hard arsenopyrite concentrates is shown. More than 95% gold is recovered in weak acidic solutions (pH = 2-5) at KSCN concentration 0.4 mol/L. The thiocyanate complexes are recovered on carbon adsorbents (BAU, UC, LKAU-4) as well as on ion exchangers (AV-17-IOP, AP-100). The gold recovery degree is 99.2-99.8%. The desorption of gold from ion exchangers can be done by thiocarbamide solutions in H2SO4 at room temperature, and from carbon adsorbents by basic thiocarbamide solutions at similar to150 degreesC. (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：43 / 48
页数：6
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