风淬急冷对高钛矿渣结构的影响研究

doi:10.11896/cldb.23010005

材料导报

2024, Vol. 38

Issue (17): 23010005-7 https://doi.org/10.11896/cldb.23010005

无机非金属及其复合材料

风淬急冷对高钛矿渣结构的影响研究

徐梓馨¹, 李军^2,*, 卢忠远², 李晓英¹, 徐陈¹

1 西南科技大学材料与化学学院,四川绵阳 621010
2 西南科技大学环境友好能源材料国家重点实验室,四川绵阳 621010

Study on the Structure of Air-Quenched High-Titanium Slag

XU Zixin¹, LI Jun^2,*, LU Zhongyuan², LI Xiaoyin¹, XU Chen¹

1 School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
2 State Key Laboratory of Environment Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

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摘要本工作制得了风淬急冷高钛矿渣,研究了风淬急冷对其结构的影响,并将其与自然冷却和水淬急冷高钛矿渣进行对比。结果表明:自然冷却高钛矿渣中结晶矿物较多,Q₀、Q₁、Q₂和Q₃硅酸盐结构共存,Ti以四配位和六配位为主;水淬急冷高钛矿渣中结晶矿物的种类及含量降低,硅酸盐结构以Q₀、Q₁和Q₂为主,Ti⁴⁺以[TiO₅]的形式进入到玻璃网络中;风淬急冷高钛矿渣为连续玻璃相,硅酸盐结构以Q₀和Q₂为主,粗颗粒中Ti以五配位为主,随其粒径减小,四配位和六配位Ti阴离子团出现。Ti的配位数整体升高并进入玻璃体结构中与硅铝酸盐连接形成玻璃网络骨架,增强了玻璃网络聚合度,提高了风淬高钛矿渣的化学稳定性。

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关键词: 高钛矿渣风淬急冷硅酸盐结构

Abstract: The air-quenched rapid-cooled high-titanium slag was prepared, and the effect of air-quenched rapid-cooling on its structure was studied and compared with naturally cooled and water-quenched rapid-cooled high-titanium slag. The results show that naturally cooled high-titanium slag has more crystalline minerals, Q₀, Q₁, Q₂ and Q₃ silicate structures coexist, and Ti is dominated by tetra-ligand and hexa-ligand; water-quenched high-titanium slag has lower crystalline mineral species and content, silicate structures are dominated by Q₀, Q₁ and Q₂, and Ti⁴⁺ enters the glass network in the form of [TiO₅]; air-quenched high-titanium slag is continuous glass phase, silicate structures are dominated by Q₀ and Q₂, and Ti in coarse particles is predominantly pentacoordinated, and tetra-and hexacoordinated Ti anion clusters appear as their particle size decreases. The overall increase in coordination number of Ti and its entry into the vitreous structure to form a glass network skeleton by connecting with silica-aluminate enhances the glass network polymerization and improves the chemical stability of air-quenched high-titanium slag.

Key words: high-titanium slag air quenching silicate structure

出版日期: 2024-09-10 发布日期: 2024-09-30

ZTFLH:

O751

基金资助: 四川省科技计划项目(2019ZDZX0024);国家自然科学基金(51402246)

通讯作者: ^*李军,西南科技大学环境友好能源材料国家重点实验室副研究员、硕士研究生导师。主要研究领域包括绿色低碳水泥基建筑材料、功能建筑材料和特色大宗固废安全高效材料转化。承担完成国家自然科学基金项目1项、国家科技支撑计划子课题2项、国家“973”计划前期专项子课题1项,在国内外发表学术论文50余篇,申请发明专利30余项,获得国家发明专利授权20余项。lijun@swust.edu.cn

作者简介: 徐梓馨,2020年6月于西南科技大学获得工学学士学位。现为西南科技大学材料与化学学院硕士研究生,在李军副研究员的指导下进行研究。目前主要研究领域为先进复合建筑材料。

引用本文:

徐梓馨, 李军, 卢忠远, 李晓英, 徐陈. 风淬急冷对高钛矿渣结构的影响研究[J]. 材料导报, 2024, 38(17): 23010005-7.
XU Zixin, LI Jun, LU Zhongyuan, LI Xiaoyin, XU Chen. Study on the Structure of Air-Quenched High-Titanium Slag. Materials Reports, 2024, 38(17): 23010005-7.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.23010005 或 http://www.mater-rep.com/CN/Y2024/V38/I17/23010005

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