添加剂对铜渣还原尾渣微晶玻璃析晶行为及性能的影响  

Effects of Additives on Crystallization Behavior and Properties of Glass-Ceramics from Copper Slag Reduction Tailings

作　　者：罗彦恒 马国军[1,2] 李志[1,2] 郑顶立[1,2] 张翔 朱俊霖[1,2] LUO Yanheng;MA Guojun;LI Zhi;ZHENG Dingli;ZHANG Xiang;ZHU Junlin(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉430081 [2]武汉科技大学钢铁冶金新工艺湖北省重点实验室,武汉430081

出　　处：《硅酸盐通报》2022年第11期3852-3860,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金和中国宝武钢铁集团公司钢铁联合研究基金(U1960108)。

摘　　要：铜渣还原尾渣与CaO-Al_(2)O_(3)-SiO_(2)系微晶玻璃的化学组成相似,采用熔融法以铜渣还原尾渣为主要原料制备微晶玻璃可为铜渣的高效利用提供一种有效途径。通过DSC、XRD和SEM-EDS等技术研究了不同添加剂(B_(2)O_(3)、CaF_(2)、TiO_(2)和Cr_(2)O_(3))对微晶玻璃物相组成、抗折强度、体密度、吸水率和显气孔率等性能的影响。结果表明:无论添加哪种添加剂,微晶玻璃均能析出力学性能较好的钙长石和钙铝黄长石,且能使晶体析晶方式转化为整体析晶;添加B_(2)O_(3)可使微晶玻璃性能最优,其次是TiO_(2)与CaF_(2)。The chemical composition of copper slag reduction tailings is similar to that of CaO-Al_(2)O_(3)-SiO_(2) glass-ceramics.The preparation of glass-ceramics with copper slag reduction tailings as the main raw material by melting method provides an effective way for the efficient utilization of copper slag.The effects of different additives(B_(2)O_(3),CaF_(2),TiO_(2) and Cr_(2)O_(3))on the phase composition,flexural strength,bulk density,water absorption and apparent porosity of glass-ceramics were studied by DSC,XRD and SEM-EDS.The experimental results show that no matter which additive is added,the glass-ceramics precipitate anorthite and gehlenite with good mechanical properties,and the crystal crystallization mode transforms into overall crystallization.Adding B_(2)O_(3) makes the best performance of glass-ceramics,followed by TiO_(2) and CaF_(2).

关 键 词：微晶玻璃 添加剂 铜渣还原尾渣 析晶行为 抗折强度 体密度 吸水率 显气孔率 

分 类 号：TF09[冶金工程—冶金物理化学]