Synthesis of superfine calcium carbonate during causticization in highly alkaline system for utilization of high-alumina fly ash
Zhu, Ganyu1,2; Li, Huiquan1; Lin, Rongyi1; Li, Shaopeng1; Hou, Xinjuan1; Tang, Qing1
2016-10-01
发表期刊HYDROMETALLURGY
ISSN0304-386X
卷号165期号:OCT页码:282-289
摘要

In the alumina extraction process of high-alumina fly ash, alkali was used to remove amorphous silica and then recovered through causticization. Focusing on the causticization process, the coupling control of CO32- conversion and CaCO3 crystallization is important to secondary-pollution reduction and high-value utilization. Influences of temperature, stirring rate, feeding time, Ca(OH)(2) concentration, and calcium/carbonate (Ca2+/CO32-) ratio on the conversion and CaCO3 morphology were investigated. Feeding time and Ca2+/CO32- ratio showed crucial effects on the conversion and crystallization of CaCO3 particles. Under optimized conditions, the conversion of CO32- can reach 95.67%, and the alkali can be well recycled with the generation of superfine calcium carbonate. Furthermore, the morphology evolution of CaCO3 was investigated in the reaction process. At the beginning of causticization, a combination of amorphous and crystalline structures can be observed. Subsequently, cubic and homogeneous morphologies were formed. At the end of the reaction, the edges of the cubic particles were dissolved, and the large particles with irregular shapes were formed by the joint of small ones in the alkaline system. (C) 2016 Elsevier B.V. All rights reserved.

关键词High-alumina Fly Ash Calcium Carbonate Causticization Crystallization
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.hydromet.2016.01.022
收录类别SCI ; ISTP
语种英语
关键词[WOS]ARAGONITE ; CRYSTALLIZATION ; GROWTH
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
WOS记录号WOS:000383522100010
引用统计
被引频次:2[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/122111/21335
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Zhu, Ganyu,Li, Huiquan,Lin, Rongyi,et al. Synthesis of superfine calcium carbonate during causticization in highly alkaline system for utilization of high-alumina fly ash[J]. HYDROMETALLURGY,2016,165(OCT):282-289.
APA Zhu, Ganyu,Li, Huiquan,Lin, Rongyi,Li, Shaopeng,Hou, Xinjuan,&Tang, Qing.(2016).Synthesis of superfine calcium carbonate during causticization in highly alkaline system for utilization of high-alumina fly ash.HYDROMETALLURGY,165(OCT),282-289.
MLA Zhu, Ganyu,et al."Synthesis of superfine calcium carbonate during causticization in highly alkaline system for utilization of high-alumina fly ash".HYDROMETALLURGY 165.OCT(2016):282-289.
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
Synthesis of superfi(1734KB)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
[Zhu, Ganyu]的文章
[Li, Huiquan]的文章
[Lin, Rongyi]的文章
百度学术
百度学术中相似的文章
[Zhu, Ganyu]的文章
[Li, Huiquan]的文章
[Lin, Rongyi]的文章
必应学术
必应学术中相似的文章
[Zhu, Ganyu]的文章
[Li, Huiquan]的文章
[Lin, Rongyi]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Synthesis of superfine calcium carbonate during causticization in highly alkaline system for utilization of high-alumina fly ash.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。