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考利尼特和黄金硫酸盐的吸附性研究

Zhonghang Chen¹, Pengcheng Li², Qianqian Wang¹

¹School of Mining Engineering, University of Science and Technology Liaoning, Anshan, 114051, China.

Scientific reports

|July 5, 2024

概括

考利尼特吸附黄金硫酸盐离子,降低黄金提取效率. 这项研究量化了高酸盐的数量.

科学领域:

地质化学地质化学
材料科学材料科学材料科学
矿物加工矿物加工

背景情况:

黄金硫酸盐漏是黄金开采中的一个关键过程.
考利尼特是一种常见的粘土矿物质,可以干扰水力金工艺.
了解矿物粘土相互作用对于优化黄金回收至关重要.

研究的目的:

为了研究黄金硫酸盐离子对高酸盐的吸附机制.
量化考利尼特对黄金炼效率的影响.
为了阐明黄金硫酸盐和高酸盐表面之间的结合相互作用.

主要方法:

在受控条件下的实验吸附研究 (时间,速度,高酸盐比率,初始黄金度).
使用富里埃变换红外光谱 (FTIR) 和能量分散光谱 (EDS) 进行了表征.
使用材料工作室中的CASTEP模块进行量子化学计算,用于吸附能量和粘合分析.

主要成果:

在最佳的实验条件下,高酸盐吸附了7.44%的黄金硫酸盐离子.
FTIR和EDS证实了物理和化学吸附相互作用.
计算的吸附能量为-438.01 kJ·mol-1,表明稳定的结合.
穆利肯的负荷和债券群体分析显示,在高化石 (001) 表面上存在稳定的黄金-硫酸硫酸结合.

结论:

考利尼特在炼过程中有效地"捕获"黄金硫酸盐离子.
黄金被考利尼特吸附对黄金提取效率产生重大影响.
这种相互作用需要在黄金加工中考虑,以减轻损失.

关键词:

吸附方式吸附方式吸附方式密度函数理论密度函数理论黄金硫酸硫酸硫酸硫酸盐是什么考利尼特 (Kaolinite) 是一种石头.

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