“碳中和、碳达峰”背景下真空铝热还原炼镁的未来发展  

Development of Magnesium Production by Vacuum Aluminothermic Reduction under the Background of Carbon Emission Peak and Carbon Neutrality

作　　者：王耀武 狄跃忠 尤晶[2] 彭建平 WANG Yao-wu;DI Yue-zhong;YOU Jing;PENG Jian-ping(School of Metallurgy,Northeastern University,Shenyang 110819,China;Liaoning Institute of Science and Technology,Benxi 117004,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]辽宁科技学院,辽宁本溪117004

出　　处：《真空》2022年第4期64-69,共6页Vacuum

基　　金：国家自然科学基金项目(21878045)。

摘　　要：在目前“碳中和、碳达峰”背景下,高能耗高碳排的冶金行业绿色低碳发展已成为国际社会和行业的共识。作为单位产品碳排放最大的冶金行业之一,镁行业的减碳势在必行,开发新的低碳炼镁技术是未来镁冶金的发展方向。本文对目前皮江法炼镁技术的不足,以及新法铝热还原炼镁技术的原理与优势进行了分析。分析结果表明,皮江法炼镁存在原料消耗量大、能耗高、碳排放量大等缺点,受还原生产金属镁原理的限制,进一步降低皮江法炼镁能耗和碳排放存在较大的困难。与皮江法相比,铝热还原炼镁技术具有原料消耗少、生产效率高、能耗低、无废渣排放等优势,生产过程碳排放可降低30%~50%,是一种低碳无污染绿色炼镁工艺,在当前“双碳”背景下,具有很好的应用前景。Low-carbon development of metallurgical industry with high energy consumption and high carbon emission has become the consensus of the international community and industry under the background of carbon emission peak and carbon neutrality.As one of metallurgical industries with the largest carbon emission per unit product,carbon emission reduction of magnesium production is imperative.Developing new low-carbon magnesium production technology is the way forward.This paper analyzes the shortcomings of the Pidgeon process and introduces the principle and advantages of the new aluminothermic reduction methods of magnesium production.The results show that the Pidgeon process has the disadvantages of large raw material consumption,high energy consumption and large carbon emission.Limited by the reduction principle of magnesium production,it is difficult to further reduce the energy consumption and carbon emission.Compared with the Pidgeon process,the aluminothermic reduction process has the advantages of less raw material consumption,high production efficiency,low energy consumption and zero discharge of waste residue,and the carbon emission of which can be reduced by 30%-50%.The aluminothermic reduction process with a low-carbon emission and pollution-free green magnesium production process has a good application prospect under the background of carbon emission peak and carbon neutrality.

关 键 词：铝热还原 铝酸钙 真空热还原 镁 皮江法 

分 类 号：TF131.1[冶金工程—冶金物理化学]