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Understanding the Structure and Structural Effects on the Properties of Blast Furnace Slag (BFS)

机译：了解对高炉渣（BFS）性质的结构和结构效应

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摘要

Evolving knowledge of the structure and physical properties of metallurgical slags is summarized in current review. Slag structure, compositional effects, role of cations in structural modifications, parameters used to represent the structure, structural analysis techniques and effects of structure on properties of blast furnace slag (BFS) studied in details. The basicity, polymerization (Q) or depolymerization (NBO/T), optical basicity, Q~n values, concentrations of bridging O's (O~o), non-bridging O's (O~-) and free O's (O~2-) in slag are useful to represent the structure of slag. Methods and techniques utilized to study the slags are also discussed. The BFS is characterized by using X-ray Diffraction and Spectroscopy, Raman Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Photoelectron Spectroscopy (XPS) and Nuclear Magnetic Resonance (NMR) Spectroscopy. The physical properties such as surface tension, viscosity, density, thermal expansion and diffusion, electrical conductivity and resistivity of slags are reviewed thoroughly which are heavily dependent on structure of slag. Viscosity is affected by polymerization or depolymerization of slag structure and cation size; electrical resistivity depends on Q, size of cations and number of available cations; thermal expansion depends on Q and cation field strength (i.e. z/r~2); thermal conductivity is linked with rigidity of slag network which is also dependent on Q and metal-oxygen (M-O) bond strength. Degree of polymerization or depolymerization of slag structure also effect the surface and interfacial tension, it decreases as metal-oxygen (M-O) bond strengths (i.e. z/r~2, cation field strength) decrease.
机译：在当前审查中总结了冶金渣的结构和物理性质的不断发展。渣结构，组成效果，结构修改中的阳离子的作用，用于表示结构的结构，结构分析技术和结构的结构性，结构分析渣（BFS）的特性。碱性，聚合（Q）或解聚（NBO / T），光学碱度，Q〜N值，桥接浓度O's（O〜O），非桥接O's（O〜 - ）和Free O's（O〜2- ）在炉渣中有助于代表炉渣的结构。还讨论了用于研究炉渣的方法和技术。 BFS的特征在于使用X射线衍射和光谱，拉曼光谱，傅立叶变换红外光谱（FTIR），X射线光电子能谱（XPS）和核磁共振（NMR）光谱。诸如表面张力，粘度，密度，热膨胀和扩散，导电性和熔渣电阻率的物理性质被彻底介绍，这严重依赖于炉渣的结构。粘度受炉渣结构和阳离子尺寸的聚合或解聚的影响;电阻率取决于Q，阳离子的大小和可用阳离子的数量;热膨胀取决于Q和阳离子场强（即Z / R〜2）;导热率与渣形网络的刚性相连，炉渣网络也取决于Q和金属 - 氧（M-O）键合强度。炉渣结构的聚合或解聚度也实现了表面和界面张力，减少了金属 - 氧（M-O）键合强度（即Z / R〜2，阳离子场强）降低。

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  • 来源
    《ISIJ international》 |2019年第7期|1153-1166|共14页
  • 作者

    Muhammad SAJID; Chenguang BAI; Muhammad AAMIR; Zhixiong YOU; Zhiming YAN; Xueming LV;

  • 作者单位

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing University Chongqing 400044 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing University Chongqing 400044 China;

    US-Pakistan Center for Advanced Studies in Energy National University of Science and Technology Islamabad 44000 Pakistan;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing University Chongqing 400044 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing University Chongqing 400044 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing University Chongqing 400044 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    blast furnace slag (BFS); slag structure; polymerization; spectroscopy; physical properties;

    机译：高炉炉渣（BFS）;渣结构;聚合;光谱学;物理性质;

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