工业钛液制备钛酸钡实验研究  

Preparation of Barium Titanate with Industrial TiOSO_4 Solution

作　　者：邹建新[1,2] 杨成[1,2] 

机构地区：[1]攀枝花学院材料工程学院,四川攀枝花617000 [2]钒钛材料及复合技术四川省高校重点实验室,四川攀枝花617000

出　　处：《矿冶工程》2014年第1期74-76,共3页Mining and Metallurgical Engineering

基　　金：国家自然科学基金项目(50804025)

摘　　要：以硫酸法钛白生产过程中的中间产品工业钛液（TiOSO。）为钛源，通过常温水解获得正钛酸，以草酸溶解获得草酸氧钛酸，再与氯化钡共沉淀得到草酸氧钛酸钡，高温煅烧后制备出了合格电子级钛酸钡产品，BaTiO3纯度为99．6％，钡钛摩尔比为1．005。最佳制备条件为：钛液水解pH值为2．5-3．5，草酸氧钛酸生成温度和草酸氧钛酸钡共沉淀温度均为50-70℃，共沉淀pH值为2．5，煅烧温度为800℃，煅烧时间2h。分析表明，以工业钛液为钛源生产钛酸钡的成本明显低于偏钛酸。Industrial TiOSO4 solution, an intermediate product from titanium white production by sulfuric acid process was used as the titanium source. Titanium acid was prepared by hydrolysis process at room temperature, which was then dissolved by oxalic acid to obtain H2 [ （ TiO （ C204 ） 2 ） ]. After a copreeipitation of H2 [ （ TiO （ C204 ） 2 ） ] and BaC12, Ba[ （TiO （C204）2 ） ] can be formed. Finally, qualified barium titanate product of electronic grade can be prepared after a further high temperature calcination, with the purity of BaTiO3 reaching 99.6% and the molar ratio of Ba/Ti at 1.005. The optimized synthesising parameters are as follows： the solvent pH for titanium hydrolysis is 2.5 -3.5, the temperature for both H2 [ （ YiO （ C2 04 ） 2 ） ] preparation and Ba[ （ TiO （ C204 ）2 ） ] precipitation is 50 -70 ℃, pH for coprecipitation is 2,5, calcination temperature is at 800℃ and calcination time is 2 h. The barium titanate production cost can be significantly reduced with industrial TiOSO4 solution as the titanium source compared with metatitanic acid.

关 键 词：工业钛液 钛酸钡 偏钛酸 草酸 

分 类 号：TQ132.35[化学工程—无机化工]