工程科学学报，第40卷，第5期：557-564,2018年5月 Chinese Journal of Engineering,Vol.40,No.5:557-564,May 2018 DOI:10.13374/j.issn2095-9389.2018.05.005;http://journals.ustb.edu.cn 高炉渣对钢渣改性的物理化学基础研究 刘仕业”，王占军”，彭森)，岳昌盛)，郭敏)，张梅3)@ 1)北京科技大学治金与生态工程学院，北京1000832)中冶建筑研究总院有限公司，北京100088 3)山西低附加值煤基资源高值利用协同创新中心，太原030024 ☒通信作者，E-mail:zhangmei@ustb.cdu.cn 摘要钢渣用作建筑材料时，由于其中含有大量游离氧化钙(f-C0),稳定性较差，通常需要改性钢渣以提高其稳定性、胶 凝性.在对钢渣、高炉渣进行化学成分和矿物组成分析的基础上，对高炉渣改性钢渣的可能性进行了热力学计算，结果表明高 炉渣中的SiO,与钢渣中f-Ca0反应，生成胶凝相，同时降低了钢渣中的f-C0含量.本文通过研究热态高炉渣改性钢渣，结 合X射线衍射、拉曼光谱、扫描电镜及能谱分析等研究方法，对改性钢渣的矿物成分、-C0含量、黏度变化等进行了分析.研 究发现随着热态高炉渣配比量的增加，改性渣黏度缓慢增加，改性钢渣中-C0、R0相含量降低，改性渣的胶凝性能提高.在 1550℃下，钢渣中添加10%高炉渣时，改性渣中2Ca0·Si02(C,S)、3Ca0·Si02(C,S)含量显著提高，f-Ca0质量分数降至 1.64%,稳定性大大提高，符合建材化使用要求.此外，进一步使用焦炭还原改性渣中的铁，轻松实现了渣铁分离，提高改性渣 的易磨性 关键词钢渣：高炉渣：改性：胶凝活性：配碳还原 分类号TF09 Fundamental research on the physics and chemistry of steelmaking slag modified with hot blast furnace slag LIU Shi-ye,WANG Zhan-jun,PENG Ben,YUE Chang-sheng?,GUO Min,ZHANG Mei 1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China 3)Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,Taiyuan 030024,China Corresponding author,E-mail:zhangmei@ustb.edu.cn ABSTRACT As the largest iron and steel producing country.China creates a large amount of steel and blast furnace slag each year. If these metallurgical slags are not properly handled,not only do they occupy land and damage the environment,but they also result in a waste of resources.Using steel slag as a building material usually leads to poor stability due to the high free lime (f-Cao)content. To improve its stability and gelation performance,steel slag usually needs to be modified.In this study,based on the chemical and mineral compositions of steel and blast furnace slags,a thermodynamic calculation of the modification process was performed.The re- sults show that SiO in blast furnace slag reacts with f-Cao in steel slag to generate a gelatinous phase and f-Cao in the modified steel- making slag decreases simultaneously.Here,the properties of steelmaking slags modified with hot blast furnace slag,including the mineral composition,f-CaO content,and viscosity,was studied using X-ray diffraction,Raman spectroscopy,scanning electron mi- croscopy,and energy spectrum analysis.The results show that viscosity increases with increasing blast furnace slag content and the f- Cao and RO contents decrease.The gelation performance of the modified steelmaking slags is improved,especially in steelmaking slags modified with 10%blast furnace slag at 1550 C.When the content of 2Ca0.SiO,and 3Ca0.SiO,increase significantly and the f-Cao 收稿日期：2017-07-10 基金项目：国家自然科学基金资助项目(51672025,51372019)：山西省科技重大专项资助项目(MC2016-03)工程科学学报,第 40 卷,第 5 期:557鄄鄄564,2018 年 5 月 Chinese Journal of Engineering, Vol. 40, No. 5: 557鄄鄄564, May 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 05. 005; http: / / journals. ustb. edu. cn 高炉渣对钢渣改性的物理化学基础研究 刘仕业1) , 王占军1) , 彭 犇2) , 岳昌盛2) , 郭 敏1) , 张 梅1,3)苣 1) 北京科技大学冶金与生态工程学院, 北京 100083 2) 中冶建筑研究总院有限公司, 北京 100088 3) 山西低附加值煤基资源高值利用协同创新中心, 太原 030024 苣 通信作者,E鄄mail: zhangmei@ ustb. edu. cn 摘 要 钢渣用作建筑材料时,由于其中含有大量游离氧化钙(f鄄鄄CaO),稳定性较差,通常需要改性钢渣以提高其稳定性、胶 凝性. 在对钢渣、高炉渣进行化学成分和矿物组成分析的基础上,对高炉渣改性钢渣的可能性进行了热力学计算,结果表明高 炉渣中的 SiO2 与钢渣中 f鄄鄄CaO 反应,生成胶凝相,同时降低了钢渣中的 f鄄鄄CaO 含量. 本文通过研究热态高炉渣改性钢渣,结 合 X 射线衍射、拉曼光谱、扫描电镜及能谱分析等研究方法,对改性钢渣的矿物成分、f鄄鄄CaO 含量、黏度变化等进行了分析. 研 究发现随着热态高炉渣配比量的增加,改性渣黏度缓慢增加,改性钢渣中 f鄄鄄CaO、RO 相含量降低,改性渣的胶凝性能提高. 在 1550 益下,钢渣中添加 10% 高炉渣时,改性渣中 2CaO·SiO2 (C2 S)、3CaO·SiO2 (C3 S) 含量显著提高,f鄄鄄 CaO 质量分数降至 1郾 64% ,稳定性大大提高,符合建材化使用要求. 此外,进一步使用焦炭还原改性渣中的铁,轻松实现了渣铁分离,提高改性渣 的易磨性. 关键词 钢渣; 高炉渣; 改性; 胶凝活性; 配碳还原 分类号 TF09 收稿日期: 2017鄄鄄07鄄鄄10 基金项目: 国家自然科学基金资助项目(51672025,51372019);山西省科技重大专项资助项目(MC2016鄄鄄03) Fundamental research on the physics and chemistry of steelmaking slag modified with hot blast furnace slag LIU Shi鄄ye 1) , WANG Zhan鄄jun 1) , PENG Ben 2) , YUE Chang鄄sheng 2) , GUO Min 1) , ZHANG Mei 1,3) 苣 1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) Central Research Institute of Building and Construction Co. , Ltd. , MCC Group, Beijing 100088, China 3) Shanxi Collaborative Innovation Center of High Value鄄added Utilization of Coal鄄related Wastes, Taiyuan 030024, China 苣 Corresponding author, E鄄mail: zhangmei@ ustb. edu. cn ABSTRACT As the largest iron and steel producing country, China creates a large amount of steel and blast furnace slag each year. If these metallurgical slags are not properly handled, not only do they occupy land and damage the environment, but they also result in a waste of resources. Using steel slag as a building material usually leads to poor stability due to the high free lime (f鄄鄄CaO) content. To improve its stability and gelation performance, steel slag usually needs to be modified. In this study, based on the chemical and mineral compositions of steel and blast furnace slags, a thermodynamic calculation of the modification process was performed. The re鄄 sults show that SiO2 in blast furnace slag reacts with f鄄鄄CaO in steel slag to generate a gelatinous phase and f鄄鄄CaO in the modified steel鄄 making slag decreases simultaneously. Here, the properties of steelmaking slags modified with hot blast furnace slag, including the mineral composition, f鄄鄄CaO content, and viscosity, was studied using X鄄鄄ray diffraction, Raman spectroscopy, scanning electron mi鄄 croscopy, and energy spectrum analysis. The results show that viscosity increases with increasing blast furnace slag content and the f鄄鄄 CaO and RO contents decrease. The gelation performance of the modified steelmaking slags is improved, especially in steelmaking slags modified with 10% blast furnace slag at 1550 益 . When the content of 2CaO·SiO2 and 3CaO·SiO2 increase significantly and the f鄄鄄CaO