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Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale
Yang, Xinlong1; Feng, Yali1; Li, Haoran2; Du, Zhuwei2
2017-06-01
Source PublicationMINERALS
ISSN2075-163X
Volume7Issue:6
Abstract

The promotion of strengthening of vanadium oxidation by compound additive of sodium salts is described from the changes of the vanadium valence state and mineral phase. The results are as follows: during the roasting process, dehydroxy mica converts to the melt, which the composite system mainly contains Na, K, Al, Si, and O. Under the action of NaCl-Na2CO3, ion exchange between sodium and potassium promotes the crystallization of albite from the melt. Na2CO3 enhances the reactivity of quartz. The albite reacts with activated quartz, which promotes the migration of sodium ions and the generation of vanadate. Under the action of NaCl-Na2SO4, The crystallization of spinel in the melt is promoted and that of the albite is inhibited. Under the action of Na2SO4-Na2CO3, the permeability of ore is deteriorated. The ion exchange process and the vanadium oxidation is inhibited from the melt. The composite additive with three sodium salts shows a stronger promoting effect on vanadium oxidation. The contribution of NaCl and Na2CO3 to V(V) in roasted slag was the highest among three sodium salts. With a certain ratio of NaCl and Na2CO3, the low content of Na2SO4 did not significantly affect the V(V) content in roasted slag.

KeywordSiliceous Shale Vanadium Oxidation Phase Change Synergistic Effect
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3390/min7060103
Indexed BySCI
Language英语
WOS KeywordBearing Stone Coal ; Extraction ; Slag ; Technology
WOS Research AreaMineralogy ; Mining & Mineral Processing
WOS SubjectMineralogy ; Mining & Mineral Processing
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment(2015ZX07205-003) ; China Ocean Mineral Resources Research and Development Program(DY125-15-T-08)
WOS IDWOS:000404047800018
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22720
Collection生化工程国家重点实验室
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xinlong,Feng, Yali,Li, Haoran,et al. Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale[J]. MINERALS,2017,7(6).
APA Yang, Xinlong,Feng, Yali,Li, Haoran,&Du, Zhuwei.(2017).Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale.MINERALS,7(6).
MLA Yang, Xinlong,et al."Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale".MINERALS 7.6(2017).
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