Effects of silica addition on chromium distribution in stainless-steel slag

被引：8
|
作者：
Li, Wanli [1 ]
Xue, Xiangxin [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
[2] Liaoning Key Lab Met Resources Recycling Sci, Shenyang 110819, Liaoning, Peoples R China
来源：
IRONMAKING & STEELMAKING | 2018年 / 45卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Silica addition; chromium distribution; spinel; liquid; VISCOSITY; AKERMANITE; PARTITION; CAF2; NA2O; MGO;
D O I：
10.1080/03019233.2017.1412386
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The present study was aimed at highlighting the effect of silica on chromium distribution and enrichment in certain stainless-steel slag when basicity ranged from 0.96 to 1.96. Industrial slag samples of the CaO-Al2O3-MgO-SiO2-CrOX-FeXO system were investigated with different silica addition contents and soaked at the targeted regime. X-ray diffraction, electron probe micro-analyzer with wavelength-dispersive X-ray spectrometer, as well as Fourier-transform infrared spectroscopy and NIH ImageJ software were used for sample characterisation. FactSage version 6.4 was employed to calculate phase equilibria at 1200 degrees C for the slag system to understand the crystallisation procedure. Results indicated that chromium was enriched in CaCr2O4 at high basicity, but in spinel at lower basicity. The spinel phase increased in size and chromium distribution with Fe(II) participated in growth with the decrease in depolymerisation of the slag structure.
引用
收藏
页码：929 / 936
页数：8
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