EFFECT OF BINARY BASICITY ON CHROMIUM OCCURRENCE IN STAINLESS STEEL SLAG

被引：2
|
作者：
Zeng, Q. [1 ]
Li, J-L [1 ,2 ,3 ]
Ma, G-J [1 ]
Zhu, H-Y [1 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan, Peoples R China
[2] Wuhan Univ Sci & Technol, Hubei Prov Key Lab New Proc Ironmaking & Steelmak, Wuhan, Peoples R China
[3] Wuhan Univ Sci & Technol, Key Lab Ferrous Met & Resources Utilizat, Minist Educ, Wuhan, Peoples R China
来源：
JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY | 2022年 / 58卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Stainless steel slag (SSS); Hexavalent chromium; Spinel crystals; Binary basicity; HEXAVALENT CHROMIUM; CRYSTALLIZATION; FEO;
D O I：
10.2298/JMMB210304043Z
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Comprehensive utilization of stainless-steel slag (SSS) is restrained due to the risk of Cr6+ leaching. Based on the studying the microstructure of synthetic slag (SS) containing Cr2O3 with XRD, SEM-EDS, and Image pro, the effect of binary basicity on the chromium occurrence in SSS was investigated. The results indicated that the binary basicity had a significant impact on the properties of spinel crystals. There was a positive correlation between the calcium content in spinel crystals and the SS basicity. The size of spinel crystals varied from large to small and the precipitation occurrence changed with the basicity increase. Furthermore, the chromium occurrences changed with the basicity. The chromium was produced in spinel crystals at lower basicity, but as the basicity increased to 3.0, the chromium precipitated as calcium chromate. In view of the relationship between the chromium leaching behavior and its occurrence, increasing basicity raised the Cr6+ leaching.
引用
收藏
页码：11 / 18
页数：8
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