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Selective controlled precipitation mechanism of canasite and xonotlite in glass-ceramics from silica slag
Geng, Xinhui1,3; Cao, Jianwei1,2; Wang, Zhi1; Lu, Jinshan3
2020-10-15
Source PublicationJOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN0022-3093
Volume546Pages:10
AbstractIn this paper, Na2O-CaO-SiO2-X(NCSX) glass-ceramics was prepared to use industrial silicon slag as the main raw material. We employed XRD, FTIR and NMR to analyze the influence of Na2O/SiO2 on the composition of microstructure units Qn in the glass-ceramics. It revealed the precipitation mechanism of xonotlite and canasite. Spectroscopy study indicated that sodium atoms could selectively destroy the glass network to form Q(3) units while silicon atoms could rebuild the network to form Q(4) units. Q(3) units can combine with calcium atoms to form Si-O-Ca bonds that generated the precipitation of xonotlite phase. However, Si-O-Si bond wrapped the Si-O-Ca bond to form an interlayer structure in canasite crystal. And the effective method for controlling the formation of canasite crystal was adopted cautiously. That is, synergistic regulation of Na2O/SiO2 and heat treatment to precipitate the canasite phase exclusively.
KeywordSilicon slag Canasite Xonotlite Q(n) unit Controlling precipitation mechanism
DOI10.1016/j.jnoncrysol.2020.120283
Language英语
WOS KeywordSOLID-STATE NMR ; CRYSTAL-STRUCTURE ; CRYSTALLIZATION ; FURNACE ; ALUMINA ; SODIUM ; B-11
Funding ProjectNational Key R&D Program of China[2018YFC1901806]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics ; Materials Science, Multidisciplinary
Funding OrganizationNational Key R&D Program of China
WOS IDWOS:000567816900005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42060
Collection中国科学院过程工程研究所
Corresponding AuthorCao, Jianwei; Wang, Zhi
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.ZhongkeLangfang Inst Proc Engn, Fenghua Rd 1, Langfang 065000, Hebei, Peoples R China
3.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China
Recommended Citation
GB/T 7714
Geng, Xinhui,Cao, Jianwei,Wang, Zhi,et al. Selective controlled precipitation mechanism of canasite and xonotlite in glass-ceramics from silica slag[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2020,546:10.
APA Geng, Xinhui,Cao, Jianwei,Wang, Zhi,&Lu, Jinshan.(2020).Selective controlled precipitation mechanism of canasite and xonotlite in glass-ceramics from silica slag.JOURNAL OF NON-CRYSTALLINE SOLIDS,546,10.
MLA Geng, Xinhui,et al."Selective controlled precipitation mechanism of canasite and xonotlite in glass-ceramics from silica slag".JOURNAL OF NON-CRYSTALLINE SOLIDS 546(2020):10.
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