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Removal of zirconium from hydrous titanium dioxide
  • ISSN号：1674-4799
  • 期刊名称：International Journal of Minerals Metallurgy and M
  • 时间：2013.1.1
  • 页码：1-8
  • 分类：TQ620.64[化学工程—精细化工] O614.412[理学—无机化学;理学—化学]
  • 作者机构：[1]National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sci-ences, Beijing 100190, China, [2]Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China, [3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 相关基金：The authors gratefully acknowledge supports by theMajor Program of the National Natural Science Foundation of China Science Foundation for （No. 51090380）, the National Distinguished Young Scholarsof China （No. 51125018 ） ence Foundation of China 511（}4139）. the National Natural Sci- （Nos. 51004091, 21006115,
  • 相关项目：熔盐法处理富钛渣清洁工艺的基础研究
作者： Ma, Xue-qin|Liu, Ya-hui|Chu, Jing-long|Li, Jie|Xue, Tian-yan|Wang, Li-na|Qi, Tao|
关键词： 水合二氧化钛, 锆, 停留时间, 最佳条件, 保留时间, 优化条件, 可能机制, NAF, zirconium, titanium dioxide, removal, density functional theory, microstructure, adsorption
中文摘要：

一个方法为由 NaF 答案把锆(Zr ) 从含水的钛二氧化物(HTD ) 移开被建议。主要参数的效果，即 pH 价值， NaF 剂量，温度和保留预定，在锆的移动上被学习。最佳的条件作为下列被发现：pH 价值， < 5.5；到 TiO2 的 NaF 的臼齿的比率， 0.6；保留时间， 80 min；并且温度， 80 夹 ???? t

英文摘要：

A method was proposed for removing zirconium （Zr） from hydrous titanium dioxide （HTD） by the NaF solution. The effects of main parameters, i.e. pH values, NaF dosage, temperature and retention time, on the removal of zirconium were stud- ied. The optimal conditions were found as the following： pH value, 〈5.5; molar ratio of NaF to TiQ, 0.6; retention time, 80 min and temperature, 80℃. The removal rate of Zr under the optimized conditions was above 87.7%. The adsorption energy of the preferential absorption of hydrofluoric acid for Zr（OH）2SOt（OH2） on the （001） crystal surface of HTD was determined by theo- retical calculation. The possible mechanism of the removal process was also discussed.

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期刊信息
  • 《矿物冶金与材料学报：英文版》
  • 主管单位:教育部
  • 主办单位:北京科技大学
  • 主编：杨天钧
  • 地址：北京市海淀区学院路30号
  • 邮编：100083
  • 邮箱：journal@ustb.edu.cn
  • 电话：010-62332875
  • 国际标准刊号：ISSN：1674-4799
  • 国内统一刊号：ISSN：11-5787/TF
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  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,美国科学引文索引（扩展库）,日本日本科学技术振兴机构数据库
  • 被引量:113