采用氧化还原-盐酸常压搅拌浸出法对钛铁矿进行选择性浸出,研究了氧化还原预处理对钛铁矿粒度、结构、表面形貌的影响,并考察了不同浸出条件对钛铁矿中Fe、Ti浸出率及浸出渣中TiO2品位的影响.结果表明,钛铁矿经过氧化还原后颗粒表面粗糙程度增加,粒径有所增大.采用1000℃氧化1h,800℃H2还原1h的改性矿浸出,优化浸出条件为:液固比5∶1,盐酸浓度4 mol/L,反应温度90℃,浸出时间5h.优化条件下Fe和Ti的浸出率分别为93.89％和3.28％,最终获得TiO2品位87.51％的富钛料,同时很好地保持了原矿的粒度.
参考文献
| [1] | 吴贤;张健.中国的钛资源分布及特点[J].钛工业进展,2006(6):8-12. |
| [2] | Jacobus P. van Dyk;Nanne M. Vegter;P. Chris Pistorius.Kinetics of ilmenite dissolution in hydrochloric acid[J].Hydrometallurgy,20021(1):31-36. |
| [3] | 王曼;谭军;陈启元;胡慧萍;姚腾猛.氧化还原-机械活化对攀西钛铁矿浸出行为的影响[J].有色金属（冶炼部分）,2012(5):1-4. |
| [4] | Qingshan Zhu;Jianbo Zhang;Hongzhong Li.Influence of phase and microstructure on the rate of hydrochloric acid leaching in pretreated Panzhihua ilmenite[J].颗粒学报（英文版）,2014(3):83-90. |
| [5] | Eungyeul PARK;Oleg OSTROVSKI.Effects of Preoxidation of Titania-Ferrous Ore on the Ore Structure and Reduction Behavior[J].ISIJ International,20041(1):74-81. |
| [6] | Guangqing Zhang;O. Ostrovski.Effect of preoxidation and sintering on properties of ilmenite concentrates[J].International Journal of Mineral Processing,20024(4):201-218. |
| [7] | 张溅波;朱庆山.钛铁矿氧化过程中的离子竞争扩散机制[J].钢铁钒钛,2013(3):1-7,18. |
| [8] | 谭亮;顾武安;袁熙志.钛精矿流态化预氧化氢还原试验研究[J].钢铁钒钛,2012(2):15-19. |
| [9] | N. El-Hazek;T.A. Lasheen;R. El-Sheikh.Hydrometallurgical criteria for TiO_2 leaching from Rosetta ilmenite by hydrochloric acid[J].Hydrometallurgy,20071/2(1/2):45-50. |
| [10] | Li Zhang;Huiping Hu;Zhi Liao.Hydrochloric acid leaching behavior of different treated Panxi ilmenite concentrations[J].Hydrometallurgy,20111/2(1/2):40-47. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%