Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale

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	Optimization Mechanism of Additive of Composite Sodium Salts on Vanadium Oxidation of Siliceous Shale
	Yang, Xinlong 1; Feng, Yali 1; Li, Haoran 2; Du, Zhuwei2
刊名	MINERALS
	2017-06-01
卷号	7 期号:6
关键词	siliceous shale vanadium oxidation phase change synergistic effect
ISSN号	2075-163X
英文摘要	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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Mineralogy ; Mining & Mineral Processing
研究领域[WOS]	Mineralogy ; Mining & Mineral Processing
关键词[WOS]	BEARING STONE COAL ; EXTRACTION ; SLAG ; TECHNOLOGY
收录类别	SCI
语种	英语
WOS记录号	WOS:000404047800018
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/22720]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.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
推荐引用方式 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).