| 钢渣中铬元素的存在形态及分布特性 |
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| 引用本文： | 何晨海,张健,李京涛,李福洲.钢渣中铬元素的存在形态及分布特性[J].水泥,2022,0(1):6-9. |
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| 作者姓名： | 何晨海 张健 李京涛 李福洲 |
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| 作者单位： | 武汉理工大学硅酸盐建筑材料国家重点实验室;安徽海螺水泥股份有限公司;中国航空技术北京有限公司 |
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| 摘 要： | 采用XRF、ICP-OES、XRD、SEM-EDS测试技术与碱消解法结合二苯碳酰二肼分光光度法对四种钢渣试样进行测试分析,研究钢渣中铬元素的存在形态及分布特性.结果 表明:四种钢渣试样的铬元素含量在500～6600 mg/kg范围内,且六价铬离子含量较少;钢渣试样的铬元素含量与其碱度、铝铁比大致呈反比关系;钢渣中铬元素...
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| 关 键 词： | 钢渣 铬元素 存在形态 分布特性 |
Existence form and distribution characteristics of chromium in steel slag |
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| HE Chenhai,et al.Existence form and distribution characteristics of chromium in steel slag[J].Cement,2022,0(1):6-9. |
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| Authors: | HE Chenhai |
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| Affiliation: | (State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,Hubei,China) |
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| Abstract: | The XRF,ICP-OES,XRD,SEM-EDS and alkaline digestion combined with diphenyl carbazide spectrophotometry were used to test and analyze chromium in four different steel slag.The existence form and distribution characteristics of chromium in steel slag were studied.The results showed that the content of chromium in four steel slag samples are in range of 500 to 6600 mg/kg,and there is less hexavalent chromium in steel slag.The Cr content is inversely related to the alkalinity and Al/Fe ratio.Chromium in steel slag is mainly exists in+2 and+3 valences.Due to different conditions such as raw materials and processing methods during steelmaking,chromium in different steel slags exists in different forms of compounds such as Cr0.79Fe0.21As2,(Cr,Mn)O3,Ca2Cr0.5Fe1.5O5 and CaCr2O4.The chromium in ordinary steel slag is concentrated in RO phase and ferrite minerals,otherwise a small part of chromium is present in silicate minerals.Chromium in stainless steel slag mainly exists in the form of CaCr2O4and solid solution in RO phase. |
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| Keywords: | steel slag chromium existence form distribution characteristics |
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