铝粉除钒浆液质量影响因素研究  

Key Factors in Controlling the Vanadium Removal Slurry with Aluminum Powder

作　　者：何华林[1,2] 孙朝晖[1] 邱克辉[2] 李开华[1] 苗庆东[1] 杨青川[2] 

机构地区：[1]攀枝花钢铁研究院,攀枝花617000 [2]成都理工大学材料与化学化工学院,成都610059

出　　处：《材料导报（纳米与新材料专辑）》2015年第1期348-350,357,共4页

基　　金：国家重点基础研究发展(973计划)(2013CB632606)

摘　　要：在四氯化钛介质过量的条件下，以氯气作为反应活性剂，由铝粉还原TiCl4得到TiCl3，制得除钒浆液，采用ICPAES分析仪分析得出其中Al含量，采用硫酸高铁铵滴定分析得到TiCl3浓度。分析结果表明，有5种主要因素影响除钒浆液中TiCl3和AlCl3的含量，其最佳控制指标如下：氯气压力，90～120kPa；氯气通入量，8～11kg；停氯温度，95～105℃；最高温度不低于128℃；保温时间不短于7min。其中，铝粉悬浮液固含量、氯气压力、氯气通入量、保温时间的增大都会使AlCl3的浓度升高，使TiCl3浓度升高的因素则是铝粉悬浮液固含量、氯气通入量、最高温度、保温时间的增大；停氯温度升高会使二者浓度降低。The preparation of vanadium removal slurry was to obtain TiCl3, which was prepared by reducing TiCl4 using aluminum as reducing agent, in the condition of excessive titanium tetrachloride medium and the active agent chlorine. The concentrations of AlCl3 and TiCl3 were measured by atomic emission spectrometer （ICP-AES） and ammonium ferric sulfate titration respectively. Based on the long-term production, the analysis showed that there were five key factors in controlling the concentrations of TiCl3 and AlCl3, which were the core components for vanadium removal in this slurry. The optimized process parameters obtained were as follows： chloride pressure at 90 120 kPa, chlorine dosage 8- 11 kg; temperature of Cl2-cut at 95- 105 ℃, the maximum temperature controlled at 128 ℃ or above, with holding time at least 7 min. Among them, the contents of AlCl3 increased with chlorine pressure, chlorine dosage and holding time increased, but decreased with the temperature of Cl3 cut increased. The concentration of TiCl3 rose with chlorine dosage, maximum temperature and holding time increased, and reduced with the temperature of Cle-cut increased.

关 键 词：TiCl4精制 除钒浆液 铝粉 TiCl3 ALCL3 

分 类 号：TF823[冶金工程—有色金属冶金]