粉煤灰提铝硅渣碱溶脱硅反应及其动力学

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (2): 542-547.

所属专题：资源综合利用

粉煤灰提铝硅渣碱溶脱硅反应及其动力学

肖永丰¹, 陈爱国¹, 张雨薇², 姜晓琳¹, 刘汇东¹

1.北京低碳清洁能源研究院,北京 102209;
2.中国矿业大学(北京)化学与环境工程学院,北京 100083

收稿日期:2020-07-28 修回日期:2020-10-26 出版日期:2021-02-15 发布日期:2021-03-10
作者简介:肖永丰(1980—),男,高工。主要从事粉煤灰综合利用方面的研究。E-mail:yongfeng.xiao@chnenergy.com.cn

Desilication Reaction and Kinetics of Aluminum-Extracting Silicon Slag in NaOH Solution

XIAO Yongfeng¹, CHEN Aiguo¹, ZHANG Yuwei², JIANG Xiaolin¹, LIU Huidong¹

1. National Institute of Clean-and-Low-Carbon Energy, Beijing 102209, China;
2. School of Chemical and Environmental Engineering, China University of Mining and Technology Beijing, Beijing 100083, China

Received:2020-07-28 Revised:2020-10-26 Online:2021-02-15 Published:2021-03-10

摘要/Abstract

摘要： 以内蒙古某酸法粉煤灰提铝硅渣为对象,研究了其在NaOH溶液中的非晶态SiO₂的脱硅行为,通过脱硅反应中脱硅率随时间的变化,研究搅拌速度、反应温度、NaOH溶液浓度对脱硅率的影响。通过拟合实验数据,确定脱硅反应的动力学规律和宏观动力学方程,并计算相应的表观活化能。结果表明:搅拌速度对脱硅率影响较小,提高反应温度和NaOH浓度可以大幅提高脱硅率,提铝硅渣在NaOH溶液中的脱硅反应受化学反应控制且符合Avrami方程,脱硅反应的表观活化能为82.086 kJ/mol。

关键词: 提铝硅渣, SiO₂, 脱硅反应, 动力学, Avrami方程

Abstract: The desilication behavior of amorphous SiO₂ in NaOH solution was studied by taking aluminum silicon slag extracted from an acid method fly ash in Inner Mongolia as the object. Through the change of desilication rate with time in the desilication reaction, the effects of stirring speed, reaction temperature and NaOH solution concentration on the desilication rate of SiO₂ were studied. By fitting the experimental data, the kinetic law and macroscopic kinetic equation of desilication reaction were determined, and the corresponding apparent activation energy was calculated. The results show that the stirring speed has little effect on the desilication rate, and the desilication rate greatly increases by increasing the reaction temperature and concentration of NaOH. The desilication reaction of aluminum-extracting silicon slag in NaOH solution is controlled by chemical reaction and conforms to Avrami equation. The apparent activation energy of desilication reaction is 82.086 kJ/mol.

Key words: aluminum-extracting silicon slag, SiO₂, desilication reaction, kinetics, Avrami equation

中图分类号:

TF80

肖永丰, 陈爱国, 张雨薇, 姜晓琳, 刘汇东. 粉煤灰提铝硅渣碱溶脱硅反应及其动力学[J]. 硅酸盐通报, 2021, 40(2): 542-547.

XIAO Yongfeng, CHEN Aiguo, ZHANG Yuwei, JIANG Xiaolin, LIU Huidong. Desilication Reaction and Kinetics of Aluminum-Extracting Silicon Slag in NaOH Solution[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 542-547.

参考文献

[1] 中国人民共和国国家发展与改革委员.关于进一步加强高铝粉煤灰资源开发利用的指导意见[EB/OL].2011.http://www.Nmgjxw.gov.cn/cms/tzgl/20110318/4308.html.
National Development and Reform Commission of the People's Republic of China. Guiding opinions on further strengthening the development and utilization of high aluminium powder coal ash resources[EB/OL]. 2011. http://www.Nmgjxw.gov.cn/cms/tzgl/20110318/4308.html (in Chinese).
[2] 张战军.从高铝粉煤灰中提取氧化铝等有用资源的研究[D].西安:西北大学,2007.
ZHANG Z J. Research on extraction of alumina and other useful resources from high aluminium fly ash[D]. Xi'an: Northwest University, 2007 (in Chinese).
[3] XIAO Y F, WANG B D, LIU X T, et al. Mechanism and kinetics study of sintering process for alumina recovery from fly ash[J]. Advanced Materials Research, 2014, 955/956/957/958/959: 2824-2830.
[4] 肖永丰,孙琦,张中华,等.循环流化床粉煤灰及其提铝残渣的结构特征[J].轻金属,2016(10):19-22.
XIAO Y F, SUN Q, ZHANG Z H, et al. Structure characteristics of CRB fly ash and alumina recovery residue[J]. Light Metals, 2016(10): 19-22 (in Chinese).
[5] 张玉胜,张伟.利用高铝粉煤灰提取氧化铝的应用[J].粉煤灰综合利用,2010,23(3):20-22.
ZHANG Y S, ZHANG W. Application of extraction of alumina from high aluminium fly ash[J]. Fly Ash Comprehensive Utilization, 2010, 23(3): 20-22 (in Chinese).
[6] 郭强.粉煤灰酸法提取氧化铝的工艺研究进展[J].洁净煤技术,2015,21(5):115-118+122.
GUO Q. Development on leach of alumina from fly ash by acid method[J]. Clean Coal Technology, 2015, 21(5): 115-118+122 (in Chinese).
[7] 李会泉,张建波,王晨晔,等.高铝粉煤灰伴生资源清洁循环利用技术的构建与研究进展[J].洁净煤技术,2018,24(2):1-8.
LI H Q, ZHANG J B, WANG C Y, et al. Construct and research advance in clean and cyclic utilizations of associated resources in high-alumina coal fly ash[J]. Clean Coal Technology, 2018, 24(2): 1-8 (in Chinese).
[8] 裴亚利.循环流化床粉煤灰的特征及其综合利用研究[D].长春:吉林大学,2006.
PEI Y L. Study on characteristic and comprehensive utilization of circulating fluidized bed ash[D]. Changchun: Jilin University, 2006 (in Chinese).
[9] 董宏,张文广.水热活化法提取粉煤灰中的氧化铝[J].世界地质,2014,33(3):723-729.
DONG H, ZHANG W G. Extracting alumina from fly ash by hydrothermal activation method[J]. Global Geology, 2014, 33(3): 723-729 (in Chinese).
[10] 杨磊,池君洲,王永旺,等.粉煤灰提取氧化铝的综合利用[J].洁净煤技术,2014,20(4):113-115.
YANG L, CHI J Z, WANG Y W, et al. Comprehensive utilization of alumina extraction from fly ash[J]. Clean Coal Technology, 2014, 20(4): 113-115 (in Chinese).
[11] 李超,戴崟,王丽萍.粉煤灰提铝尾渣制备13X沸石分子筛的研究[J].化工管理,2017(22):84.
LI C, DAI Y, WANG L P. Study on the preparation of 13X zeolite molecular sieve from fly ash aluminum tailings [J]. Chemical Enterprise Management, 2017(22): 84 (in Chinese).
[12] 华一新.冶金过程动力学导论[M].北京:冶金工业出版社,2004.
HUA Y X. Introduction to Metallurgical Process Dynamics[M]. Beijing: Metallurgical Industry Press, 2004 (in Chinese).
[13] LEVENSPIEL O. Chemical reaction engineering[M]. New York: John Wiley & Sons, 1999.
[14] ÖZDEMIR M, ÇETIŞLI H. Extraction kinetics of alunite in sulfuric acid and hydrochloric acid[J]. Hydrometallurgy, 2005, 76(3/4): 217-224.
[15] AVRAMI M. Kinetics of phase change. I: general theory[J]. The Journal of Chemical Physics, 1939, 7(12): 1103-1112.
[16] KABAI J. Determination of specific activation energies of metal oxides and metal oxide hydrates by measurement of the rate of dissolution[J]. Acta Chim Acad Sci Hung, 1973, 78: 57-73.
[17] 畅永锋,翟秀静,符岩,等.还原焙烧红土矿的硫酸浸出动力学[J].分子科学学报,2008,24(4):241-245.
CHANG Y F, ZHAI X J, FU Y, et al. Sulphuric acid leaching kinetics of pre-reduced laterite ores[J]. Journal of Molecular Science, 2008, 24(4): 241-245 (in Chinese).
[18] DEMIRKΙRAN N, KÜNKÜL A. Dissolution kinetics of ulexite in perchloric acid solutions[J]. International Journal of Mineral Processing, 2007, 83(1/2): 76-80.
[19] HE G X, ZHAO Z W, WANG X B, et al. Leaching kinetics of scheelite in hydrochloric acid solution containing hydrogen peroxide as complexing agent[J]. Hydrometallurgy, 2014, 144/145: 140-147.
[20] ZHENG Y J, CHEN K K. Leaching kinetics of selenium from selenium-tellurium-rich materials in sodium sulfite solutions[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(2): 536-543.
[21] RAZA N, ZAFAR Z I, NAJAM-UL-HAQ. An analytical model approach for the dissolution kinetics of magnesite ore using ascorbic acid as leaching agent[J]. International Journal of Metals, 2013, 2013: 1-6.
[22] OKUR H, TEKIN T, OZER A K, et al. Effect of ultrasound on the dissolution of colemanite in H₂SO₄[J]. Hydrometallurgy, 2002, 67(1/2/3): 79-86.

粉煤灰提铝硅渣碱溶脱硅反应及其动力学

Desilication Reaction and Kinetics of Aluminum-Extracting Silicon Slag in NaOH Solution

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