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Binders and the Bonding Mechanism of Fly Ash and Coke Pelletization
Liu, Yan1,2; Duan, Dongping1,2; Li, Yong2
2019-04-03
Source PublicationINTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
ISSN1939-2699
Volume39Issue:3Pages:159-168
Abstract

Fly ash is an industrial by-product generated during the combustion of coal in power plants and it could represent a very important source of minerals particularly alumina. Extracting alumina by pelletization and carbo-chlorination of fly ash is an effective utilization process. However, the strength of fly ash and coke pellets is very low, therefore the application of binders to the pellets should be investigated. In this study, physical and chemical characteristics of fly ash and coke were investigated followed by experiments with different binders to make pellets with a focus on pellet strength. The results of studies indicated that of all the binders evaluated, the organic binders generally produced pellets with greater strength than the inorganic binders, with carboxymethyl cellulose (CMC) being the most effective. Based on the results, it was concluded that a blend of CMC with pre-gelatinized starch was the best compromise for strength of the pellets and the cost point of view. The bonding mechanisms of the best binder have been discussed.

KeywordBinder Coke Fly Ash Pelletization Strength
DOI10.1080/19392699.2017.1310103
Language英语
WOS KeywordExtracting Alumina ; Coal ; Recovery
Funding ProjectQinghai Provincial Natural Science Foundation of China[2014-ZJ-933Q] ; National Natural Science Foundation of China[21406234]
WOS Research AreaEnergy & Fuels ; Mining & Mineral Processing
WOS SubjectEnergy & Fuels ; Mining & Mineral Processing
Funding OrganizationQinghai Provincial Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000462863200004
PublisherTAYLOR & FRANCIS INC
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28249
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Yan
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yan,Duan, Dongping,Li, Yong. Binders and the Bonding Mechanism of Fly Ash and Coke Pelletization[J]. INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION,2019,39(3):159-168.
APA Liu, Yan,Duan, Dongping,&Li, Yong.(2019).Binders and the Bonding Mechanism of Fly Ash and Coke Pelletization.INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION,39(3),159-168.
MLA Liu, Yan,et al."Binders and the Bonding Mechanism of Fly Ash and Coke Pelletization".INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION 39.3(2019):159-168.
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