风淬急冷对高钛矿渣结构的影响研究  

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

作　　者：徐梓馨 李军 卢忠远 李晓英[1] 徐陈 XU Zixin;LI Jun;LU Zhongyuan;LI Xiaoyin;XU Chen(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;State Key Laboratory of Environment Friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[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

出　　处：《材料导报》2024年第17期144-150,共7页Materials Reports

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

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,Q_(0)、Q_(1)、Q_(2)和Q_(3)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Q_(0)、Q_(1)和Q_(2)为主,Ti^(4+)以[TiO_(5)]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Q_(0)和Q_(2)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。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,Q_(0),Q_(1),Q_(2) and Q_(3) 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 Q_(0),Q_(1) and Q_(2),and Ti^(4+)enters the glass network in the form of[TiO_(5)];air-quenched high-titanium slag is continuous glass phase,silicate structures are dominated by Q_(0) and Q_(2),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.

关 键 词：高钛矿渣 风淬急冷 硅酸盐结构 

分 类 号：O751[理学—晶体学]