采用低温酸浸法对广西高铁铝土矿中的铝和铁的溶出规律进行了研究,考察了硫酸浓度、浸出温度、浸出时间及液固比因素对铝土矿中铝和铁溶出率的影响.结果表明,最优浸出条件为浸出时间60min,浸出温度100℃,液固比5∶1,硫酸浓度20％.此条件下铁的浸出率为98.68％,铝的浸出率为3.02％,溶出比为32.68,可实现高铁铝土矿中铁和铝的分步溶出.对该浸出过程进行动力学分析研究表明,此条件下浸出过程属化学反应控制,其控制动力学方程为:lgk=3-1.83×10-31/T反应活化能Ea=35.11kJ/mol.
参考文献
| [1] | Sun Na .Study on iron-aluminium-silicon separation of high iron content gibbsite-type bauxite ores[D].长沙:中南大学,2010. |
| [2] | Li Chengyuan.Producing status and application prospect of bauxite[J].World Nonferrous Metals,1999(10):12-14. |
| [3] | 刘中凡,杜雅君.我国铝土矿资源综合分析[J].轻金属,2000(12):8-12. |
| [4] | 褚丙武,赵春芳.河南支建铝土矿的矿物学特征研究[J].矿产与地质,2000(04):251-254. |
| [5] | 穆新和.我国铝土矿资源合理开发利用的探讨[J].矿产与地质,2002(05):313-315. |
| [6] | Zhang Jiazeng.The historical developmental course and future developmental trend of Chinese aluminum industry[J].Mining Research and Development,2003(08):40-42. |
| [7] | 魏党生.高铁铝土矿综合利用工艺研究[J].有色金属（选矿部分）,2008(06):14-18. |
| [8] | Tang Xiangqi;Chen Qiande.Comparison on comprehensive utilization of Guigang gibbsite ores[J].Light Metals,1995(02):1-5. |
| [9] | Tang Xiangqi;Chen Qiande.Study on bayer process of Guigang gibbsite ores in Guangxi[J].Light Metals,1995(05):14-19. |
| [10] | 李光辉,刘牡丹,姜涛,周太华,范晓慧.高铝铁矿石工艺矿物学特征及铝铁分离技术[J].中南大学学报（自然科学版）,2009(05):1165-1171. |
| [11] | Das B;Prakash S;Das S K .Effective beneficiation of low grade iron ore through gigging operation[J].Journal of Minerals & Materials Characterization & Engineering,2007,7(01):27-37. |
| [12] | S Bhattacharya;U K Viswakarma;P Misra .Meeting the Challenges of a Growing Demand for Steel in India[J].Journal of the Institution of Engineers (India). Metallurgical and Material Engineering Division,2009(1):24-36. |
| [13] | Fu Juying;Jiang Tao;Zhu Deqing.Sintering and pelletizing[M].长沙:中南大学,2007 |
| [14] | 李艳茹,刘万山,李金莲,袁惠.鞍钢烧结使用高结晶水、高铝铁矿的实验室研究[J].烧结球团,2009(05):5-9. |
| [15] | 刘万超,杨家宽,肖波.拜耳法赤泥中铁的提取及残渣制备建材[J].中国有色金属学报,2008(01):187-192. |
| [16] | Wanchao Liu;Jiakuan Yang;Bo Xiao .Review on treatment and utilization of bauxite residues in China[J].International Journal of Mineral Processing,2009(3/4):220-231. |
| [17] | Li X B;Xiao W;Liu W.Recovery of alumina and ferric oxide from bayer red mud rich in iron by reduction sintering[J].Nonferrous Metals Society of China,2009(19):1342-1347. |
| [18] | Diao Kejian .Research and application on desiliconizing technology by sintering in producing alumina[D].长沙:中南大学,2005. |
| [19] | 范艳青,蒋训雄,汪胜东,冯亚平,黄胜.赤泥中铁提取冶金试验研究[J].矿冶,2009(04):32-34,56. |
| [20] | Li Yintai;Bi Shiwen;Duan Zhenying.Study on process of comprehensive utilization of gibbsite ores in Guigang Guangxi[J].Light Metals,1992(09):6-14. |
| [21] | H. Kahn;M.M.L. Tassinari;G. Ratti .Characterization of bauxite fines aiming to minimize their iron content[J].Minerals Engineering,2003(Suppl.11):1313-1315. |
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%