捕收剂K64与辉钼矿吸附等温模型及吸附动力学研究

Adsorption Isothermal Model and Adsorption Kinetics of Collector K64 and Molybdenite

针对辉钼矿与捕收剂K64的作用机理进行研究,以Mo S2含量为96%的纯矿物作为捕收剂K64的作用对象。使用紫外光谱仪进行测试研究,得到不同浓度捕收K64的吸光度,从而获得其标准曲线y=0.654x+0.0226其中R2=0.99694。在此基础上进行了捕收剂K64与辉钼矿表面吸附等温线模型的研究,分别研究了Langmuir、Freundlich、Temkin三种吸附等温线模型,获得捕收剂K64与辉钼矿矿物颗粒之间的吸附作用可以按照Freundlich吸附等温线模型来进行解释的结论。并对三种不同浓度的捕收剂K64与辉钼矿矿物颗粒表面的吸附动力学进行了计算,分别计算了一级吸附动力学、二级吸附动力学、颗粒内扩散动力学,获得二级动力学模型比一级动力学模型和颗粒内扩散动力学模型更加能准确说明K64与辉钼矿矿物颗粒之间的吸附行为。

Based on the interaction mechanism of the collector(K64) and molybdenum ore, a pure mineral containing96 percent of Mo S2 is as the interacting target of the collector(K64). The absorbance of K64 was obtained from the different concentrations by ultraviolet spectroscopy, and the standard curve y = 0.654 x + 0.0226(R2 = 0.99694) as the result was obtained. Above this, the adsorption behavior of collector(K64) and molybdenite surface was studied by adsorption isotherm model, the conclusion which used Freundlic adsorption isotherm model for explaining the behavior of collector(K64) and molybdenite mineral particles was obtained by respectively studying the Langmuir and Freundlic, Temkin three kinds of adsorption isotherm models. The adsorption kinetics of collector(K64) and molybdenite mineral particles was calculated by different concentration of collector(K64), the conclusion which used the second-order adsorption kinetics model for explaining the adsorption behavior between collector(K64) and molybdenite mineral particles more accurately than the first-order adsorption kinetics and particle diffusion dynamics model.