Study of extracting alumina from high-alumina PC fly ash by a hydro-chemical process
Ding, Jian1,2; Ma, Shuhua2; Zheng, Shili2; Zhang, Yi2; Xie, Zongli4; Shen, Shirley4; Liu, Zhongkai2,3
2016-05-01
发表期刊HYDROMETALLURGY
ISSN0304-386X
卷号161期号:MAY页码:58-64
摘要Alumina extraction from high-alumina pulverized coal (PC) fly ash by a mild hydro-chemical process characterized by a high alkaline sodium aluminate solution was studied. A high alumina extraction efficiency of 96.03% has been achieved. The effects of temperature and reaction time on alumina extraction ratio, the phase transformation and the morphology change of the extraction residues have been investigated. The alumina extracting process involves two steps: transformation from mullite and corundum to an intermediate product aluminasilicate, Na8Al6Si6O24(OH)(2)(H2O)(2), and then from the aluminasilicate to calcium sodium hydrate silicate (NaCaHSiO4). The reaction temperature has been found to be critical for the alumina extraction and especially for the decomposition of the intermediate product Na8Al6Si6O24(OH)(2)(H2O)(2) at high temperatures (>250 degrees C). With the aid of a specially designed rapid real-time sampling device, the kinetics of the decomposition of Na8Al6Si6O24(OH)(2)(H2O)(2) at high temperatures has also been studied and fitted by the Avrami-Erofeev equation. Furthermore, some engineering suggestions about the reactors design and prevention of pipe scaling have been proposed based on the kinetic results. (C) 2016 Elsevier B.V. All rights reserved.
关键词Fly Ash Alumina Extraction Kinetics Hydro-chemical Process
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.hydromet.2016.01.025
收录类别SCI
语种英语
关键词[WOS]THERMAL-ACTIVATION ; PHASE-CHANGE ; KINETICS ; CHINA ; DISSOLUTION ; RECOVERY ; SYSTEM
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
项目资助者National Science and Technology Support Program of China(2012BAF03B01)
WOS记录号WOS:000373542100009
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20993
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.CHALCO, Zhengzhou Res Inst, Zhengzhou 450041, Peoples R China
4.CSIRO Mfg, Private Bag 10, Clayton, Vic 3169, Australia
推荐引用方式
GB/T 7714
Ding, Jian,Ma, Shuhua,Zheng, Shili,et al. Study of extracting alumina from high-alumina PC fly ash by a hydro-chemical process[J]. HYDROMETALLURGY,2016,161(MAY):58-64.
APA Ding, Jian.,Ma, Shuhua.,Zheng, Shili.,Zhang, Yi.,Xie, Zongli.,...&Liu, Zhongkai.(2016).Study of extracting alumina from high-alumina PC fly ash by a hydro-chemical process.HYDROMETALLURGY,161(MAY),58-64.
MLA Ding, Jian,et al."Study of extracting alumina from high-alumina PC fly ash by a hydro-chemical process".HYDROMETALLURGY 161.MAY(2016):58-64.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Study of extracting (2048KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ding, Jian]的文章
[Ma, Shuhua]的文章
[Zheng, Shili]的文章
百度学术
百度学术中相似的文章
[Ding, Jian]的文章
[Ma, Shuhua]的文章
[Zheng, Shili]的文章
必应学术
必应学术中相似的文章
[Ding, Jian]的文章
[Ma, Shuhua]的文章
[Zheng, Shili]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Study of extracting alumina from high-alumina PC fly ash by a hydro-chemical process.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。