Chromium Recycling from Argon-oxygen Decarburization Dust in Hot Metal Pre-dephosphorization Process

被引：0
|
作者：
Dong-ping ZHAN [1 ]
Yang-peng ZHANG [1 ]
Zhou-hua JIANG [1 ]
De-wei WANG [1 ]
Hui-shu ZHANG [2 ]
机构：
[1] School of Metallurgy,Northeastern University
[2] Metallurgical Engineering College,Liaoning Institute of Science and Technology
来源：
JournalofIronandSteelResearch(International) | 2016年 / 23卷 / 09期
基金：
中国国家自然科学基金;
关键词：
stainless steelmaking; AOD dust; chromium recycling; hot metal pre-dephosphorization;
D O I：
暂无
中图分类号：
TF791 [炼铬];
学科分类号：
摘要：
The chromium recycling from the stainless steel dust of an argon-oxygen decarburization（AOD）furnace during a hot metal pretreatment process was investigated.Experiments at different temperatures or with different amounts of AOD dusts were carried out in a laboratory furnace equipped with MoSi;heating elements and subsequently industrial experiments were conducted in a stainless steelmaking factory,in order to study the thermodynamic mechanism of C and Si reacted with Cr;O;to get Cr from AOD dust.The results showed that the reaction between C and Cr;O;occurred below 1 572.18 K.Although its reducing ability was weaker than that of Si,C enabled the Cr in Cr;O;in the AOD dust to be recycled using the Si in the slag.By combining the AOD dust added in an earlier stage,the hot metal pretreatment slag added in a later stage could not only recycle Cr from AOD dust but also remove Si,S,and P.Higher hot metal temperatures resulted in higher Cr content and lower remained P concentration in the molten iron.
引用
收藏
页码：867 / 873
页数：7
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