工程科学学报，第41卷，第10期：1288-1297,2019年10月 Chinese Journal of Engineering,Vol.41,No.10:1288-1297,October 2019 D0I:10.13374/j.issn2095-9389.2018.09.19.001:http:/journals.ustb.ed.cn 冶金熔渣混合制备微晶玻璃的组成及性能优化 李宇四，伊耀东，陈奎元，孟昕阳 北京科技大学钢铁冶金新技术国家重点实验室，北京100083 ☒通信作者，E-mail:lceu00@sina.com 摘要以电炉镍铁渣和普通高炉渣为主要原料，采用Petrurgic一步法制备了微晶玻璃，并结合力学性能测试，对样品进行 了X射线衍射(XRD)、扫描电镜(SEM)等分析，讨论了电炉镍铁渣和普通高炉渣配比、Mg2·含量以及晶核剂TO2对成品微观 结构及性能的影响规律.结果表明：将熔渣冷却至900℃结晶和650℃退火，能够制备出性能优良的微晶玻璃.当Mg2·含量 增加且析出晶体为单一辉石族矿物时，微晶玻璃具有较高的力学性能.电炉镍铁渣或Mg2·含量增加，会导致其辉石族矿物含 量增加，当两种渣混合掺量达到90%（镍铁渣质量分数50%，高炉渣质量分数为40%）且外掺2%Mg0时，所制备微晶玻璃结 构致密，仅含有单一辉石族矿物，包括透辉石、普通辉石和斜顽辉石，从而具有最优的力学性能，其抗折强度达210MPa,抗压 强度达1162MP.电炉镍铁渣或者Mg0含量进一步增加，会导致镁橄榄石析出，此时微晶玻璃的力学性能显著下降.TiO2含 量的增加不改变微晶玻璃晶体种类，合适掺人T0,(本实验为质量分数2%)能够增强透辉石含量，提升性能：但过量掺入会抑 制晶体生长，导致其性能下降 关键词电炉镍铁渣；普通高炉渣；微晶玻璃；辉石族；镁橄榄石 分类号TF141 Optimization of performance and composition for glass ceramics prepared from mixing molten slags LI Yu,YI Yao-dong,CHEN Kui-yuan,MENG Xin-yang State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:leeuu00@sina.com ABSTRACT The direct preparation of materials from high-temperature slag is an effective way for the integrated utilization of slags and their thermal energy.In this paper,with ferronickel slags and blast furnace slags as the main raw materials,glass ceramics were prepared by the Petrurgic method,a one-step heat-treatment method by direct crystallization of the slag melt during its cooling process. The ratio of ferronickel slags and blast furnace slags,Mg'content,and the effect of nucleating agent TiO,on the microstructure and properties of the products were analyzed by X-ray diffraction,scanning electron microscopy,and mechanical property test.The results show that glass ceramics with excellent properties can be prepared by crystallization at 900 C and annealing at 650 C for slag melts during the cooling process.When the content of Mgincreased,and the precipitated crystal was a single-pyroxene-group mineral,the glass ceramics exhibited the highest mechanical properties.The content of pyroxene group mineral increased with the increasing fer- ronickel slag or Mgo content.When the content of the two slags reached 90%(50%ferronickel slags and 40%blast furnace slags) with the addition of 2%Mgo,the prepared glass ceramics presented a compact structure containing single-pyroxene-group minerals, including diopside,ordinary pyroxene,and clinopyroxene,and the best mechanical properties with flexural strength of 210 MPa and compressive strength of 1162 MPa.However,the further increase in ferronickel slag or Mgo content led to the precipitation of forster- ite,which significantly deteriorated the mechanical properties of glass ceramics.The increasing content of TiO,caused no change in the 收稿日期：2018-10-22 基金项目：国家自然科学基金资助项目(51674029)：“十三五”国家重点研发计划资助项目(2016YFB0601304)工程科学学报,第 41 卷,第 10 期:1288鄄鄄1297,2019 年 10 月 Chinese Journal of Engineering, Vol. 41, No. 10: 1288鄄鄄1297, October 2019 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 09. 19. 001; http: / / journals. ustb. edu. cn 冶金熔渣混合制备微晶玻璃的组成及性能优化 李 宇苣 , 伊耀东, 陈奎元, 孟昕阳 北京科技大学钢铁冶金新技术国家重点实验室, 北京 100083 苣通信作者, E鄄mail: leeuu00@ sina. com 摘 要 以电炉镍铁渣和普通高炉渣为主要原料,采用 Petrurgic 一步法制备了微晶玻璃,并结合力学性能测试,对样品进行 了 X 射线衍射(XRD)、扫描电镜(SEM)等分析,讨论了电炉镍铁渣和普通高炉渣配比、Mg 2 + 含量以及晶核剂 TiO2 对成品微观 结构及性能的影响规律. 结果表明:将熔渣冷却至 900 益结晶和 650 益 退火,能够制备出性能优良的微晶玻璃. 当 Mg 2 + 含量 增加且析出晶体为单一辉石族矿物时,微晶玻璃具有较高的力学性能. 电炉镍铁渣或 Mg 2 + 含量增加,会导致其辉石族矿物含 量增加,当两种渣混合掺量达到 90% (镍铁渣质量分数 50% ,高炉渣质量分数为 40% )且外掺 2% MgO 时,所制备微晶玻璃结 构致密,仅含有单一辉石族矿物,包括透辉石、普通辉石和斜顽辉石,从而具有最优的力学性能,其抗折强度达 210 MPa,抗压 强度达 1162 MPa. 电炉镍铁渣或者 MgO 含量进一步增加,会导致镁橄榄石析出,此时微晶玻璃的力学性能显著下降. TiO2 含 量的增加不改变微晶玻璃晶体种类,合适掺入 TiO2 (本实验为质量分数2% )能够增强透辉石含量,提升性能;但过量掺入会抑 制晶体生长,导致其性能下降. 关键词 电炉镍铁渣; 普通高炉渣; 微晶玻璃; 辉石族; 镁橄榄石 分类号 TF141 收稿日期: 2018鄄鄄10鄄鄄22 基金项目: 国家自然科学基金资助项目(51674029);“十三五冶国家重点研发计划资助项目(2016YFB0601304) Optimization of performance and composition for glass ceramics prepared from mixing molten slags LI Yu 苣 , YI Yao鄄dong, CHEN Kui鄄yuan, MENG Xin鄄yang State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 苣Corresponding author, E鄄mail: leeuu00@ sina. com ABSTRACT The direct preparation of materials from high鄄temperature slag is an effective way for the integrated utilization of slags and their thermal energy. In this paper, with ferronickel slags and blast furnace slags as the main raw materials, glass ceramics were prepared by the Petrurgic method, a one鄄step heat鄄treatment method by direct crystallization of the slag melt during its cooling process. The ratio of ferronickel slags and blast furnace slags, Mg 2 + content, and the effect of nucleating agent TiO2 on the microstructure and properties of the products were analyzed by X鄄ray diffraction, scanning electron microscopy, and mechanical property test. The results show that glass ceramics with excellent properties can be prepared by crystallization at 900 益 and annealing at 650 益 for slag melts during the cooling process. When the content of Mg 2 + increased, and the precipitated crystal was a single鄄pyroxene鄄group mineral, the glass ceramics exhibited the highest mechanical properties. The content of pyroxene group mineral increased with the increasing fer鄄 ronickel slag or MgO content. When the content of the two slags reached 90% (50% ferronickel slags and 40% blast furnace slags) with the addition of 2% MgO, the prepared glass ceramics presented a compact structure containing single鄄pyroxene鄄group minerals, including diopside, ordinary pyroxene, and clinopyroxene, and the best mechanical properties with flexural strength of 210 MPa and compressive strength of 1162 MPa. However, the further increase in ferronickel slag or MgO content led to the precipitation of forster鄄 ite, which significantly deteriorated the mechanical properties of glass ceramics. The increasing content of TiO2 caused no change in the