The enhanced potassium leaching mechanism of phosphorus-potassium associated ore with sodium dodecyl sulfate (SDS) was systematically elucidated and attributed to the combined effects such as the wetting, adsorption, dispersion and permeation actions. First, the formation of the adsorption film with 1.25 g L⁻¹SDS led to the surface tension and the contact angle obviously decreased, promoting the wetting, dispersion and permeation actions. Second, more acid and fluorine entered into the interior of the ore due to the enhanced molecular and convective diffusions and the enlarged fissures and particle size of the ore, leading to higher potassium dissolution fraction. However, much micelle covering on the residue fixed layer would be formed if 5.00 g L⁻¹ SDS exceeded the critical micellization concentration (CMC), which hindered acid and fluorine entered into the interior, indicating decreased potassium dissolution fraction. Finally, an intensified leaching process schematic diagram of the ore in HCl-CaF₂ media with SDS was developed. These novel findings demonstrate that SDS can enhance effectively and obviously the leaching of potassium from phosphorus-potassium associated ore. In addition, the intensified leaching mechanism by SDS will be helpful for efficient extraction, enrichment and utilization of mineral resources.

系统地阐明了十二烷基硫酸钠对磷钾伴生矿石增强的钾浸出机理，并归因于润湿，吸附，分散和渗透作用等综合作用。首先，形成具有1.25g L ^-1 SDS的吸附膜导致表面张力和接触角明显降低，促进了润湿，分散和渗透作用。其次，由于增强的分子和对流扩散以及增大的裂缝和矿石的粒径，更多的酸和氟进入矿石内部，从而导致较高的钾溶解分数。但是，如果5.00 g L ^-1会在残留物固定层上形成大量的胶束。SDS超过了临界胶束化浓度（CMC），这阻碍了酸和氟进入内部，表明钾的溶解分数降低。最终，开发了具有SDS的HCl-CaF ₂介质中矿石的强化浸出工艺示意图。这些新颖的发现表明，SDS可以有效地增强磷钾相关矿石中钾的浸出。此外，SDS强化的浸出机理将有助于矿产资源的有效提取，富集和利用。