Modified activated carbons for recovery of gold from thiosulphate solutions

用于从硫代硫酸盐溶液中回收金的改性活性炭

• 批准号: ARC : LP0211899
• 负责人: Prof Jannie Van Deventer
• 金额: $ 12.9万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2002
• 资助国家: 澳大利亚
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/modified-activated-carbons-thiosulphate-solutions/74483
• 关键词: Modified; activated; carbons; recovery; gold

Modified activated carbons for recovery of gold from thiosulphate solutions. Thiosulphate is currently being considered by various international mining companies as an environmentally friendly alternative to cyanide for gold extraction. Although little is available in the open literature, most confidential research on recovery from thiosulphate leach slurries has focused on ion-exchange technology. Activated carbon as a more practical sorbent has been ignored completely owing to the general perception that it has a very low affinity for gold thiosulphate. On the basis of promising preliminary work, the aim of this project is to develop physically and chemically modified activated carbons with a high affinity for the sterically large gold thiosulphate complex. This project will aim to prove the hypothesis that the graphitic edges of an active carbon should be maximised and the organic active sites minimised for optimal adsorption.

用于从硫代硫酸盐溶液中回收金的改性活性碳。硫代硫酸盐目前正被多家国际矿业公司视为提炼黄金的氰化物的环境友好替代品。尽管公开文献很少，但大多数关于从硫代硫酸盐浸出泥浆中回收的机密研究都集中在离子交换技术上。由于人们普遍认为，活性碳对硫代硫酸盐的亲和力很低，因此，作为一种更实用的吸着剂，它完全被忽视了。在有前景的前期工作的基础上，该项目的目标是开发对空间大的硫代硫酸盐络合物具有高亲和力的物理和化学修饰的活性碳。这个项目的目的是证明这样一个假设，即活性碳的石墨化边缘应该最大化，而有机活性中心应该最小化，以实现最佳吸附。