加强炼镁传热效率的研究进展

Research progress in strengthening the heat transfer efficiency of magnesium smelting

随着轻量化需要日益迫切,金属镁及其合金由于具有质量轻、比强度和比刚度高等特性,应用越来越广泛,镁行业的发展也愈发受人关注。皮江法是国内炼镁的主要生产工艺,但是随着绿色低碳发展理念的推行,该炼镁工艺在生产过程中传热效率低、还原周期长、能耗高和排放大等缺点突显,一直制约着炼镁行业的发展。经过多年的研究,学者们在提高镁冶炼传热效率,降低还原温度,缩短还原周期等方面取得一系列成果。本文主要从还原剂、工艺条件、传热装置3个方面详细综述了提升炼镁传热效率的研究进展,并对未来炼镁技术发展提出了建议和思路,仅供参考。

With the increasing need for lightweight materials,magnesium and its alloys have been widely used because of their light quality,high specific strength and specific stiffness,and the development of the magnesium industry has attracted increasing attention.The Pidgeon process is the main production process of magnesium smelting in China.However,with the implementation of the green and low-carbon development concept,the process has many shortcomings,such as low heat transfer efficiency,long reduction cycle,high energy consumption and large emissions,which has been restricting the development of the magnesium smelting industry.After years of research,scholars have made a series of achievements in improving the heat transfer efficiency of magnesium smelting,reducing reduction temperature,shortening the reduction cycle,etc.In this paper,the research progress in improving the heat transfer efficiency of magnesium smelting was reviewed in detail from three aspects including reductant,process conditions and heat transfer device,and suggestions and ideas on the existing magnesium smelting technology were put forward for reference only.