| 含铬不锈钢渣的改性与铬的富集 |
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| 引用本文： | 张文超,武杏荣,王伟,廖伟,李辽沙.含铬不锈钢渣的改性与铬的富集[J].安徽工业大学学报,2012(1):12-16. |
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| 作者姓名： | 张文超 武杏荣 王伟 廖伟 李辽沙 |
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| 作者单位： | 安徽工业大学冶金工程与资源综合利用安徽省重点实验室 |
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| 基金项目： | 安徽省自然科学基金(090414150);安徽省高校自然科学重点基金资助项目(KJ2009A69) |
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| 摘 要： | 研究不锈钢原渣中铬的赋存状态，及添加Al2O3高温改性处理不锈钢渣中铬的富集和Al2O3添加量对铬富集程度的影响。将不锈钢渣与Al2O3混合后于1520℃熔融30min，冷却到1500℃时保温10min。采用扫描电镜（SEM）、x-射线能谱（EDX）和X射线衍射（XRD）对试样进行分析。结果表明：在Al2O3改性的不锈钢渣中，铬主要富集在复合尖晶石固溶体（Fe，Mg）（Cr，Fe，Al）2O4]中，其中添加质量分数为10％Al2O3时，铬的质量分数（以Cr2O3计）能达到57．98％，该晶体的平均尺寸能够达到22.3um；铬的富集度为88．22％。
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| 关 键 词： | 不锈钢渣 富集 铬富集相 结晶 |
Enrichment of Chromium in Stainless Steel Slag by Modification |
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| ZHANG Wen-Chao,WU Xing-rong,WANG Wei,LIAO Wei,LI Liao-sha.Enrichment of Chromium in Stainless Steel Slag by Modification[J].Journal of Anhui University of Technology,2012(1):12-16. |
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| Authors: | ZHANG Wen-Chao WU Xing-rong WANG Wei LIAO Wei LI Liao-sha |
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| Affiliation: | (Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling,Anhui University of Technology,Ma’anshan 243002,China) |
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| Abstract: | Study the occurrence of chromium in stainless steel slag,the enrichment of Cr and the growth of Cr-concentrating phase in stainless steel slag by adding Al2O3.The mixture of stainless steel slag and Al2O3 were melted at 1 520 ℃ for 30 min,then were cooled to 1500 ℃ for 10 min.The samples were analyzed with scanning electron microscopy(SEM),energy disperse X-ray spectrometry(EDX),and X-ray powder diffraction(XRD).The results show that Cr can be enriched into spinel phase(Fe,Mg)(Cr,Fe,Al)2O4 ].When the slag is added with 10% Al2O3,the grain size can reached to 22.3 with the high content of Cr2O3(57.98%),and the chromium concentration degree can reach to 88.22%. |
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| Keywords: | stainless steel slag enrichment Cr-concentrating phase crystallization |
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