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昆明冶金高等专科学校学报 ›› 2018, Vol. 34 ›› Issue (3): 7-12.DOI: 10.3969/j.issn.1009-0479.2018.03.002

• 冶金技术与材料 • 上一篇    下一篇

苏打焙烧钛渣酸浸除杂实验研究

杨志鸿,宋群玲,李永佳,李瑛娟   

  1. 昆明冶金高等专科学校冶金材料学院,云南 昆明 650033
  • 收稿日期:2018-06-11 出版日期:2018-06-30 发布日期:2018-06-30
  • 作者简介:杨志鸿(1984-),男,陕西汉中人,讲师,工学博士研究生,主要从事有色金属冶金及冶金新材料制备的研究。
  • 基金资助:
    云南省应用基础研究重大项目:UGS钛渣生产工艺机理研究(2013FC002)。

Experimental Study on Acid Leaching of Titanium Slag of NaCO3 Roasting

YANG Zhihong,SONG Qunling,LI Yongjia,LI Yingjuan   

  1. Faculty of Metallurgy and Materials Engineering,Kunming Metallurgy College,Kunming 650033,China
  • Received:2018-06-11 Online:2018-06-30 Published:2018-06-30

摘要:   钛精矿采用电炉熔炼产出的钛渣TiO质量分数不高,远远达不到氯化法钛白和海绵钛生产对原料的要求。由于钛渣中的黑钛石(Me,Me=Ti、Fe、Mg、Mn等) 组分无法直接被稀酸溶解,经苏打焙烧处理后,黑钛石固溶体结构被破坏,稀盐酸在一定条件下便可溶解其中的Ca、Fe、Mg、Mn、Al、Si等杂质。采用苏打焙烧—酸浸除杂—煅烧工艺处理电炉钛渣,重点考察了盐酸浓度、酸浸温度、酸浸时间、搅拌强度对苏打焙烧钛渣酸浸除杂效果的影响。通过实验,得到了最佳工艺参数:盐酸质量浓度20%、酸浸温度110℃、酸浸时间1.5h,搅拌强度350r/min。在最佳工艺条件下,除杂效果最好,获得的酸浸产物煅烧后TiO质量分数可达95.33%。

关键词: 钛渣, 苏打焙烧, 酸浸除杂

Abstract: The TiO2 is low in content of titanium slag produced by electric furnace melting,and it is not suitable for the preparation of titanium white pigment and sponge titanium.Solid solution of anosovite (Me,Me=Ti,Fe,Mg,Mn) intitanium slag,can not be dissolved by hydrochloric acidic.However,after the roasting of NaCO,the structure of the solid solution of the anosovite is destroyed,and dilute hydrochloric acid can dissolve Fe,Mg,Mn,Ca,Al,Si and other impurities in the titanium slag under certain conditions.The effects of hydrochloric acid concentration,acid leaching temperature,acid leaching time and agitation in tensity on acid leaching of soda roasted titanate slag were investigated with the use of soda roasting-acid leaching-calcination process.Through experiments,the best process parameters were obtained:hydrochloric acid mass concentration 20%,acid leaching temperature 110℃,acid leaching time 1.5h,stirring intensity 350r/min.The content of TiO2 in the calcination product is 95%.

Key words: titanium slag, NaCO3 roasting, acid leaching

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