Experimental study on extracting titanium from high titanium slag recovery dust leached in hydrochloric acid assisted by ultrasonic wave

doi:10.16085/j.issn.1000-6613.2016.s2.067

Abstract

Abstract: Base on a large number of recovery ash unable to deal with come from the high titanium slag production process.An effective approach use ultrasonic assisted hydrochloric acid leaching of high titanium slag dust was proposed to improve the titanium dioxide of acid leaching.The crystal distribution characteristics before and after calcination of high titanium slag recovery dust are compared with XRD spectrogram where study is carried out regarding the influence of hydrochloric acid concentration,acid leaching time,acid leaching concentration and acid-dust ratio on the titanium dioxide of acid leaching and compared with acid leaching experiment without ultrasonic wave.Results indicate that the reaction rate is quickened due to distributed particle and surface renewal caused by ultrasound effect,which can shorten the acid leaching time from 6h to 2.5h and the content of titanium dioxide in acid leaching was obviously increased,compared with the experiment performed under the condition without ultrasonic wave.Under the action of ultrasonic wave,the content of titanium dioxide in acid leaching ash is up to 56.2% with hydrochloric acid concentration of 6mol/L,acid leaching temperature at 90℃,acid leaching time for 2h and acid-dust ratio of 1.4:1.

Key words: high titanium slag recovery dust, acid leaching, ultrasonic wave, extracting titanium

摘要： 针对高钛渣生产过程中产生的大量无法处理的收尘灰，本文提出采用超声波辅助盐酸酸浸高钛渣收尘灰提高酸浸灰中二氧化钛的方法，用XRD谱图对比了高钛渣收尘灰煅烧前后的结晶分布特征，考察了盐酸浓度、酸浸时间、酸浸浓度、酸灰比对酸浸灰中二氧化钛含量的影响，并与无超声波作用的酸浸实验进行对比。结果表明，与无超声条件相比，因超声效应造成颗粒分散与表面更新，加快了反应速率，可将酸浸时间从6h缩短至2.5h，同时酸浸灰中二氧化钛含量明显提高，在超声波作用下，盐酸浓度5mol/L，酸浸温度90℃，酸浸时间2.5h，酸灰比1.4：1，酸浸灰中二氧化钛可达56.2%。

关键词: 高钛渣收尘灰, 酸浸, 超声波, 提钛

CLC Number:

TQ134

DENG Jun, ZHU Xuejun, ZHANG Yi. Experimental study on extracting titanium from high titanium slag recovery dust leached in hydrochloric acid assisted by ultrasonic wave[J]. Chemical Industry and Engineering Progree, 2016, 35(S2): 376-380.

邓俊, 朱学军, 张毅. 超声辅助盐酸酸浸高钛渣收尘灰提钛实验研究[J]. 化工进展, 2016, 35(S2): 376-380.

References

[1] 周林,雷霆.世界钛渣研发现状与发展趋势[J].钛工业进展,2009,26(1):26-29.
[2] 汪云华.人造金红石工艺国内外研究现状及进展[J].材料导报,2012,26(20):338-340.
[3] 彭兵,易文质,彭及,等.含钛高炉渣水解制取钛白的动力学研究[J].湖南大学学报,1997,24(2):31-35.
[4] 陈启福.攀钢高炉渣提取TiO₂及Sc₂O₃扩大试验[J].钢铁钒钛,1995,16(3):64-68.
[5] 管昊,贾峰,贡湘君,等.含钛高炉渣的湿法提钛研究进展[J].南京师范大学学报(工程技术版),2013,13(4):40-46.
[6] MAHMOUD M,AFIFI A,IBRAHIMI A.Reductive leaching of ilmenite ore in hydrochloric acid for preparation of synthetic rutile[J].Hydrometallurgy,2004,73:99-109.
[7] MARSHALL R,THAUNG L,RICHARD R.The dissolution of iron in the hydrochloric acid leach of an ilmenite concentrate[J].Hydrometallurgy,1999,51:299-323.
[8] ZHANG Li,HU Huiping,LIAO Zhi,et al.Hydrochloric acid leaching behavior of different treated Panxi ilmenite concentrations[J].Hydrometallurgy,2011,107:40-47.
[9] 王曾洁,张利华,王海北,等.盐酸常压直接浸出攀西地区钛铁矿制备人造金红石[J].有色金属,2007,59(4):108-110.
[10] 扈维明,齐斌涛,蒋训雄,等.钛铁矿盐酸法生产人造金红石半工业扩大实验[J].有色金属,2012(2):27-29.
[11] 胡克俊,锡淦,姚娟,等.还原-锈蚀法生产人造金红石技术现状及攀钢采用该工艺可行性研究[J].钛工业进展,2006,23(4):17-22.
[12] 郭宇峰,刘水石,马晓雯,等.盐酸强化还原钛铁矿中金属铁的锈蚀动力学[J].中国有色金属学报,2010,20(10):2038-2043.
[13] KUMARI E,MOHAN D.A structural model for the rusting of reduced ilmenite[J].Acta Metallurgica Slovaca,2003,1:13-20.
[14] 陈科彤,李怀仁,包崇军,等.钛渣厂烟尘及还原剂粉末的综合利用研究[J].中国有色冶金,2014,43(6):61-64.
[15] 汤贝贝,朱学军,邓俊,等.盐酸浸出高钛渣收尘灰提钛研究[J].广东化工,2015,42(3):11-12.