论文部分内容阅读
在稀溶液状态下的Ａｕ的吸附实验，较好地体现了地质热液过程中吸附作用在金矿成矿方面的重要性。黄铁矿与金的硫氢配合物的作用结果截然不同于黄铁矿与金的氯配合物的作用结果。黄铁矿对金的硫氢配合物的吸附是通过表面络合和静电吸附完成的，且不同类型黄铁矿有明显的吸附差异。矿物表面特性及非均匀催化可能在吸附过程中起了重要作用。金矿中常见的Ａｕ、Ａｓ和ｐ型黄铁矿三位一体的现象可能与Ａｓ对吸附作用的影响有较大关系。而金的氯配合物则极易被黄铁矿所还原。
The adsorption experiments of Au in dilute solution well reflect the importance of adsorption in the hydrothermal process of gold mineralization. The effect of the pyrithione-gold hydrogen-sulfur complex is quite different from the effect of the pyrithione-gold chloride complex. The adsorption of pyrithione to pyrithione by pyrite is accomplished by surface complexation and electrostatic adsorption, and the different types of pyrite have obvious adsorption differences. Mineral surface properties and heterogeneous catalysis may play an important role in the adsorption process. The phenomenon of trinity of Au, As and p-type pyrite common in gold mines may be related to the effect of As on the adsorption. The gold chloride complexes are easily reduced by pyrite.