海绵钛生产中副产品液态氯化镁回收利用的研究  

Research on Recovery and Utilization of By-product Liquid Magnesium Chloride in Sponge Titanium Production

作　　者：李光辉 刘军祥 于庆波 Li Guanghui;Liu Junxiang;Yu Qingbo(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《钛工业进展》2021年第5期37-40,共4页Titanium Industry Progress

摘　　要：液态氯化镁是Kroll法生产海绵钛过程中产生的副产品,排出温度为820~890℃,具有很高的利用价值。目前,镁电解是最为成熟的液态氯化镁回收工艺,但其高昂的投资和运行成本限制了该项技术在我国的发展,大量的液态氯化镁经自然冷却后被低价出售。回顾了国内镁电解技术发展历程,并详细介绍了液态氯化镁回收的最新技术,原位热解-热法还原方法以及液态氯化镁余热回收系统,讨论了2种工艺的特点,以期为企业节能降耗提供参考。Liquid magnesium chloride is a kind of by-product produced in the process of sponge production by the Kroll method, and the discharge temperature is 820-890 ℃, which has high utilization value. At present, the most mature liquid magnesium chloride recovery process is magnesium electrolysis technology, but its high investment and operating cost limit the development of magnesium electricity technology in China, and a large amount of liquid magnesium chloride is sold at low price after natural cooling. The development of domestic magnesium electrolysis technology was summarized, and the latest technology for liquid magnesium chloride recovery was introduced in detail, such as in-situ pyrolysis-thermal reduction method and liquid magnesium chloride waste heat recovery system, the characteristics of each process was discussed, which provide a reference for energy saving and consumption reduction of enterprises.

关 键 词：海绵钛 氯化镁 镁电解 原位热解 余热回收 

分 类 号：TF803.13[冶金工程—有色金属冶金]