In the conventional beneficiation process for handling mixed ore containing molybdenite and bismuthinite, the co-extraction issues involving molybdenum and bismuth, exemplified by mutual content of molybdenite and bismuthinite, may lead to the shutdown of the production line. Under acidic conditions, Bi³⁺ and Cl⁻ can form stable coordination complex anions, whereas Mo⁴⁺, Mo⁶⁺, and Cl⁻ do not exhibit this behavior. This insight offers a novel approach for the chemical separation of molybdenum and bismuth from mixed ore using hydrochloric acid. Through a kinetic study of the hydrochloric acid leaching process applied to bismuth extraction from mixed molybdenite and bismuthinite ore, we have investigated various factors that influence leaching efficiency, such as stirring speed, particle size, acid concentration, and reaction temperature. Experimental results and computational results have revealed that the apparent activation energy is 56 kJ mol⁻¹. The kinetic analysis suggests that the leaching process is governed by the product layer diffusion model. Moreover, the use of hydrochloric acid in leaching the mixed ore is shown to alter the surface structure, thereby increasing the effective reaction area. This, in turn, leads to improved leaching efficiency and enhances the overall leaching process.

在处理含辉钼矿和辉铋矿的混合矿石的常规选矿工艺中，涉及钼和铋的共提取问题，例如辉钼矿和辉铋矿的相互含量，可能导致生产线的关闭。在酸性条件下，Bi ³⁺和Cl ^-可以形成稳定的配位络合物阴离子，而Mo ⁴⁺、Mo ⁶⁺和Cl ^-则不表现出这种行为。这一见解为使用盐酸从混合矿石中化学分离钼和铋提供了一种新方法。通过对从辉钼矿和辉铋矿混合矿中提取铋的盐酸浸出过程进行动力学研究，我们研究了影响浸出效率的各种因素，如搅拌速度、粒度、酸浓度和反应温度。实验结果和计算结果表明表观活化能为56 kJ mol ^-1。动力学分析表明浸出过程受产物层扩散模型控制。此外，在浸出混合矿石时使用盐酸可以改变表面结构，从而增加有效反应面积。这反过来又提高了浸出效率并增强了整体浸出过程。