Tailings from the vanadium extraction process are discarded each year as waste, which contain approximately 30wt% of Fe. In our previous work, we extracted Fe and Mn from vanadium slag, and Fe and Mn existed in the form of FeCl₂ and MnCl₂ after chlorination by NH₄Cl to achieve effective and green usage of waste containing Fe and Mn. In this work, square wave voltammetry (SWV) and cyclic voltammetry (CV) were applied to investigate the electrochemical behaviors of Fe²⁺ and Mn²⁺ in NaCl-KCl melt at 800°C. The reduction processes of Fe²⁺ and Mn²⁺ were found to involve one step. The diffusion coefficients of FeCl₂ and MnCl₂ in molten salt of eutectic mixtures NaCl-KCl molten salt were measured. The electrodeposition of Fe and Mn were performed using two electrodes at a constant cell voltage. The Mn/Fe mass ratio of the electrodeposited product in NaCl-KCl-2.13wt%FeCl₂-1.07wt%MnCl₂ was 0.0625 at 2.3 V. After the electrolysis of NaCl-KCl-2.13wt%FeCl₂-1.07wt%MnCl₂ melted at 2.3 V, the electrolysis was again started under 3.0 V and the Mn/Fe mass ratio of the electrodeposited product was 36.4. This process provides a novel method to effectively separate Fe and Mn from simulated chlorinated vanadium slag.

每年将钒提取过程中的尾矿作为废物丢弃，其中约含30wt％的铁。在我们以前的工作中，我们从钒渣中提取了铁和锰，并且经过NH ₄ Cl氯化处理后，铁和锰以FeCl ₂和MnCl ₂的形式存在，从而实现了有效，绿色地利用含铁和锰的废物。在这项工作中，使用方波伏安法（SWV）和循环伏安法（CV）来研究800°C的NaCl-KCl熔体中Fe ²⁺和Mn ²⁺的电化学行为。发现Fe ²⁺和Mn ²⁺的还原过程涉及一个步骤。FeCl ₂和MnCl的扩散系数_2.在共熔混合物的熔融盐中测量NaCl-KCl熔融盐。使用两个电极以恒定的电池电压进行Fe和Mn的电沉积。NaCl-KCl-2.13wt％FeCl ₂ -1.07wt％MnCl ₂中的电沉积产物的Mn / Fe质量比在2.3 V下为0.0625.NaCl-KCl-2.13wt％FeCl ₂ -1.07wt％MnCl电解后₂在2.3V熔化，再次在3.0V下开始电解，电沉积产物的Mn / Fe质量比为36.4。该方法提供了一种从模拟氯化钒渣中有效分离铁和锰的新颖方法。