中文摘要：

研究了含钒尾渣NaOH亚熔盐法分解过程中主要反应因素对钒浸出率的影响规律,获得了最佳工艺参数,并对反应机理进行了探讨.结果表明,反应温度、反应时间及碱渣质量比是最重要的反应因素,其影响程度为反应温度（T）〉反应时间（t）〉碱渣质量比（r）;含钒尾渣最佳浸出条件为：反应温度170℃,尾渣粒度-74μm,反应时间3h,碱渣质量比4：1及搅拌速度700r/min.在此条件下,钒浸出率高于90%.含钒尾渣亚熔盐浸出钒过程前期为化学反应控制,反应活化能为27.69kJ/mol,NaOH亚熔盐介质通过破坏含硅玻璃体包裹相（辉石相）实现含钒尾渣中钒的高效浸出.

英文摘要：

The major reaction factors of vanadium leaching process from vanadium-containing residue using NaOH sub-molten salt were studied,and the optimum process parameters obtained.By analyzing the decomposition process of vanadium-containing residue,the reaction mechanism was obtained at the same time.The significance of reaction temperature,particle size,reaction time,and NaOH-to-residue mass ratio on vanadium extraction was studied.The orthogonal experimental results showed that the impact order of reaction factors was reaction temperature reaction time NaOH-to-residue mass ratio with respect to vanadium recovery.Under the conditions of reaction temperature 170℃,NaOH-to-residue 4：1,stirring speed 700 r/min,particle size-74 μm and reaction time 3 h,leaching rate of vanadium was higher than 90%.The leaching process of vanadium,with activation energy 27.69 kJ/mol,was controlled by the chemical reaction in the initial reaction process.Acmite was decomposed,and dissoluble vanadium dissolved into NaOH solution,when the residue was decomposed by NaOH sub-molten salt.