摘要
研究了酸性介质中EDTA对高钛渣与NaOH熔盐反应水洗产物中Fe3+的络合作用,考察了EDTA加入量、反应时间、pH值和温度对Ti4+和Fe3+溶出率的影响.结果表明,增加EDTA量、延长反应时间、减小pH值及升高温度,Fe3+溶出率增大.将反应后的固相在105℃下水解可制得球状锐钛型TiO2,平均粒径为100nm,纯度可达99.3%.
Complexation of ferric ions in acid using EDTA （ethylene diamine tetraacetic acid） as chelating agent from the dissolved reaction products of NaOH molten salt with titanium slag was studied. The effects of EDTA added amount, reaction time, pH and temperature on the extraction rates of Ti^4＋and Fe^3＋ were investigated. The results showed that the extraction rate of ferric ions increased with increasing the amount of EDTA, prolonging the reaction time, reducing pH and raising the temperature. Spherical anatase TiO2 particles with average diameter of 100 nm could be obtained by hydrolyzing the residues at boiling point, and the content of TiO2 reached up to 99.3%.
出处
《过程工程学报》
CAS
CSCD
北大核心
2009年第2期329-332,共4页
The Chinese Journal of Process Engineering
基金
“十一五”国家科技支撑计划重大基金资助项目(编号:2006BAC02A05)
国家重点基础研究发展规划(973)基金资助项目(编号:2007CB613501)
中国科学院知识创新工程基金资助项目(编号:KGCX2-YW-214)
关键词
高钛渣
熔盐法
EDTA
络合
二氧化钛
titanium slag
molten salt method
ethylene diamine tetraacetic acid
complexation
titanium dioxide
