摘要
通过对四氯化锆镁热还原过程中,在坩锅壁上形成的爬壁锆的微观结构进行层次与局部分析,结合杂质元素分布特点,探讨爬壁锆成核机理,杂质元素铁、氧升高机理。通过还原坩埚材质影响机理分析及针对性优化、近坩埚爬壁锆杂质扩散分析与表面处理方法选择,使爬壁锆质量可达海绵锆水平。配合惰性气体保护存放及与海绵锆同步进行真空蒸馏脱去氯化镁和金属镁,可提升海绵锆系统回收率。
Through hierarchical and local analysis of the microstructure of climbing zirconium formed on the crucible wall during the thermal reduction process of magnesium zirconium tetrachloride,combined with the distribution characteristics of impurity elements,the nucleation mechanism of climbing zirconium and the mechanism of impurity element iron and oxygen increase are explored.By analyzing the mechanism of the effect of reducing crucible material and targeted optimization,analyzing the diffusion of zirconium impurities near the crucible wall climbing,and selecting surface treatment methods,the quality of climbing zirconium can reach the level of sponge zirconium.Combined with inert gas protection storage and synchronous vacuum distillation with sponge zirconium to remove magnesium chloride and metallic magnesium,the yield of sponge zirconium system can be increased.
作者
陈海宇
CHEN Haiyu(Jinzhou vanadium Industry Co.,Ltd.,Liaoning Jinzhou 121005,China)
出处
《铁合金》
CAS
2024年第3期11-14,共4页
Ferro-alloys
关键词
锆
质量提升
机理
工艺
回收率
zirconia
quality improvement
mechanism
process
rate of recovery
