熔融钒渣直接冶炼钒铁合金过程中组元迁移规律及其动力学行为

Based on the status on appplication and research of vanadium slag and technology of Fe-V alloy production, the present work will invesitigate the two-step slag bath reduction of adjusted molten vanadium slag to produce Fe-V alloy using using silicon wafering waster and aluminium ash as reductants. The behavior of the oxides in reductants and the oxidation products dissoluting to the molten slag will be studied, and the microstructue and the macroproperties as well the activity change of the components during reduction process would be described. Addition, the migration laws of the components during two-step slag bath reduction and and the controlling mechanisms are determined, and the dynamic characteristics of metal-slag seperation are also decribed. Finally, the key technological steps for Fe-V alloy production from the adjusted molten vanadium slag will be determined. The characteristics of the present work is to treat waste by waster and short process, and it can use the physical heat of the molten vanadium slag. Therefore, the present work has the properties on well considering the subjects of resource, energy and environment, with novle research contents and outstanding scientific issues, and thus is considered to have imprtant academic and application values.

本申报项目结合钒渣利用与钒铁合金生产技术与研究现状及存在问题，拟利用硅片切割废料和铝灰两种二次资源为还原剂，通过二步渣浴还原法处理熔融钒渣而直接制备钒铁合金。其中，主要通过热力学与实验研究相结合，在研究还原剂氧化物组元与氧化产物在渣中溶解行为的基础上，揭示改质熔融钒渣还原过程中熔渣微观结构与宏观性能、渣中组元活度随还原进程的演变规律及其调控机制，阐明熔融钒渣还原过程中组元的迁移规律及预还原-终还原的调控机制，描述熔渣还原与渣-金分离的动力学特征，确定利用改质熔融钒渣直接制备钒铁合金的关键工艺环节，为新型钒渣处理技术开发提供理论依据。本项目拟采用的工艺方法不仅具有“以废制废”、短流程等特色，并可利用熔融钒渣携带的物理热，因此，申报项目的研究内容具有突出的“资源、能源与环境”特色，内容新颖，关键科学问题突出，具有重要的学术与应用价值。

本项目结合钒渣利用与钒铁合金生产技术与研究现状及存在问题，拟利用硅片切割废料和铝灰两种二次资源为还原剂，通过二步渣浴还原法处理熔融钒渣而直接制备钒铁合金。其中，主要通过热力学与实验研究相结合，在研究还原剂氧化物组元与氧化产物在渣中溶解行为的基础上，揭示改质熔融钒渣还原过程中熔渣微观结构与宏观性能、渣中组元活度随还原进程的演变规律及其调控机制，阐明熔融钒渣还原过程中组元的迁移规律及预还原-终还原的调控机制，描述熔渣还原与渣-金分离的动力学特征，确定利用改质熔融钒渣直接制备钒铁合金的关键工艺环节，为新型钒渣处理技术开发提供理论依据。本项目拟采用的工艺方法不仅具有“以废制废”、短流程等特色，并可利用熔融钒渣携带的物理热，因此，项目的研究内容具有突出的“资源、能源与环境”特色，内容新颖，关键科学问题突出，具有重要的学术与应用价值。