LI Ting;XIN Zhifeng;XU Meng;BAI Linshan;DONG Yongping;CHU Xiangfeng;

• 1:School of Chemistry and Chemical Engineering
• 2:Anhui University of Technology

Abstract：

In order to extract mixture of alumina and gallium oxide from high-aluminum fly ash,the separation of alumina and gallium oxide with two-stage carbonization method was studied according to the difference of acidity between gallium hydroxide and aluminum hydroxide precipitation in alkaline solution. A certain amount of alumina was isolated. Taking the first-stage carbonization process as research object,the influence of p H,flow rate and temperature on the separation of alumina and gallium oxide. The results showed that,when the p H was 11. 23,the temperature was 80 ℃,the flow rate of CO_2 was 40 m L / min. The content of Ga in the mixture could reach 5. 7550 mg / g.

Key Words： fly ash;two-stage carbonization;separation;alumina;gallium oxide

Abstract:

Keywords:

Foundation: 国家自然科学基金煤炭联合基金资助项目(U1361123)

Authors: LI Ting;XIN Zhifeng;XU Meng;BAI Linshan;DONG Yongping;CHU Xiangfeng;

DOI: 10.13226/j.issn.1006-6772.2016.01.021

References：

• [1]张五勋.铝-镓合金的生产工艺[J].轻合金加工技术,2009,37(4):11-12.Zhang Wuxun.Production technology for Al-Ga alloy[J].Light Alloy Fabrication Technology,2009,37(4):11-12.
• [2]陈通.氢能[J].乙醛醋酸化工,2015(1):28-31.Chen Tong.Hydrogen energy[J].Acetaldehyde Acetic Acide Chemical Industry,2015(1):28-31.
• [3]范美强,刘颖雅,杨黎妮,等.铝锡合金制氢技术研究[J].高等学校化学学报,2008,29(2):356-359.Fan Meiqiang,Liu Yingya,Yang Lini,et al.Hydrogen generation from the hydrolysisof al-sn alloys[J].Chemical Journal of Chinese Universities,2008,29(2):356-359.
• [4]刘姝,范美强,李璐,等.基于便携式制氢-储氢体系的铝水解技术研究进展[J].电源技术,2011,35(3):334-337.Liu Shu,Fan Meiqiang,Li Lu,et al.Progress of hydrogen generation and hydrogen storage from aluminum hydrolysis as hydrogen sources for portable fuel cells[J].Chinese Journal of Power Sources,2011,35(3):334-337.
• [5]罗晓娜,郭宝明,肖毅.产氢用铝镓合金的制备技术[J].化学工程,2011,39(3):76-78.Luo Xiaona,Guo Baoming,Xiao Yi.Preparation of aluminum-gallium alloys for hydrogen production[J].Chemical Engineering(China),2011,39(3):76-78.
• [6]Grosjean M H,Zidoune M,Rouea L,et al.Hydrogen production via hydrolysis reaction from ball-milled Mg-based materials[J].International Journal of Hydrogen Energy,2006,31(1):109-119.
• [7]朱勤标.水解制氢用铝合金材料研究[D].武汉:湖北工业大学,2014:1-10.
• [8]李克峰.铝-水电化学制氢体系的研究[D].天津:天津大学,2003:1-12.
• [9]Blissett R S,Rowson N A.An empirical model for the prediction of the viscosity of slurries of coal fly ash with varying concentration and shear rate at room temperature[J].Fuel,2013,111:555-563.
• [10]王蕾,马鸿文,张晓云,等.高铝粉煤灰烧结反应产物硅铝分离的研究[J].中国非金属矿工业导刊,2006(2):29-32.Wang Lei,Ma Hongwen,Zhang Xiaoyun,et al.Study on slica-alumina separated in reacted product of baked high-alumina fly ash[J].China Non-Metallic Minerals Industry,2006(2):29-32.
• [11]刘祥凯,杜锐.富铝粉煤灰的资源化利用技术[J].山西煤炭管理干部学院学报,2011,24(1):40-42.Liu Xiangkai,Du Rui.Analysis on Al-rich fly ash utilization technology[J].Journal of Shanxi Coal-Mining Administrators College,2011,24(1):40-42.
• [12]王宁,石莉,陈娟,等.粉煤灰中镓的赋存状态及综合回收利用研究[J].矿物学报,2007,27(S1):396-397.Wang Ning,Shi Li,Chen Juan,et al.State of gallium in fly ash and comprehensive recycling research[J].Acta Mineralogica Sinica,2007,27(S1):396-397.
• [13]杨权成,马淑花,谢华,等.高铝粉煤灰提取氧化铝的研究进展[J].矿产综合利用,2012(3):3-6.Yang Quancheng,Ma Shuhua,Xie Hua.Research progress of extracting alumina from high-aluminum fly ash[J].Multipurpose Utilization of Mineral Resources,2012(3):3-6.
• [14]何佳振,胡小莲,李运勇.粉煤灰中镓的浸出试验条件[J].粉煤灰综合利用,2002(6):11-12.He Jiazhen,Hu Xiaolian,Li Yunyong.Study on the leaching test conditions of Gallium from the fly ash[J].Fly Ash Comprehensive Utilization,2002(6):11-12.
• [15]许富军,许诺真.三段碳酸化法生产金属镓[J].河南化工,2002(10):21-22.Xu Fujun,Xu Nuozhen.Gallium production of three stage carbonization process[J].Henan Chemical,2002(10):21-22.
• [16]赵毅,赵英,陈颖敏.从粉煤灰中分离镓的实验研究[J].华北电力技术,1998(1):35-37.Zhao Yi,Zhao Ying,Chen Yingmin.Recovery of gallium from fly ash:an experimental study[J].North China Electric Power,1998(1):35-37.