不同碳质还原剂制备钛可溶阳极试验研究  

Experimental Study on Titanium Soluble Anode Prepared with Different Carbonaceous Reducing Agent

作　　者：朱福兴[1] 邓斌[1] 穆天柱[1] 

机构地区：[1]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2013年第5期9-14,共6页Iron Steel Vanadium Titanium

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB7735500)

摘　　要：根据热力学软件及结合最新技术研究进展计算出由碳热还原制备TiC0.5O0.5的理论热力学数据,采用差热热重分析对石墨、炭黑和石油焦三种碳质还原剂还原TiO2的历程进行研究试验,对不同碳质还原剂下制备得到的钛可溶阳极进行物相和结构分析。结果表明:TiC0.5O0.5固溶体的吉布斯自由能与温度满足ΔG=385 418-262.1 T的关系式,高温、低真空利于制备TiC0.5O0.5固溶体形成;石墨和炭黑热还原制备TiC0.5O0.5固溶体反应历程相同,而与石油焦不同,石墨反应生成TiC0.5O0.5固溶体初始温度较其他两种还原剂低;石墨料制得固溶体颗粒较均匀,而石油焦料存在反应不完全现象。Theoretical thermodynamic data of TiC0.5O0.5 production by carbon thermal reduction were calculated by thermodynamic software combined with the latest technology research progresses. The processes of TiO2 reduction with graphite,carbon black,and petroleum coke were tested by DSC- TG,and titanium soluble anodes prepared with different carbonaceous reducing agent were analyzed by XRD and SEM. The results show that Gibbs free energy and temperature of the solid solution TiC0.5O0.5 meet the relation of ΔG=385 418-262.1 T,and high temperature and low vacuum are beneficial for preparing solid solution TiC0.5O0.5. The processes of TiO2 reduction with graphite and carbon black are similar,but different from that with petroleum coke. The initial temperature of solid solution TiC0. 5O0.5 preparation with graphite is lower than those of the other two carbonaceous reducing agents. TiC0.5O0.5 can be acquired by graphite and carbon black reduction,but the reaction of petroleum coke is incomplete,and solution particles prepared with graphite are homogeneous.

关 键 词：钛可溶阳极 石墨 炭黑 石油焦 TiC0.5O0.5固溶体 

分 类 号：TF823[冶金工程—有色金属冶金]