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	Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution
	Zhou, HM; Zheng, SL; Zhang, Y
刊名	HYDROMETALLURGY
	2005-11-01
卷号	80期号:1-2页码:83-89
关键词	leaching KOH niobium-tantalum ore highly concentrated medium
ISSN号	0304-386X
其他题名	Hydrometallurgy
中文摘要	The recovery of niobium and tantalum from a low-grade niobium-tantalum ore by using highly concentrated caustic potash as an alternative to hydrofluoric acid has been investigated. Experiments on the leaching behavior of niobium and tantalum, as well as other associated impurities, such as titanium, iron, manganese, silicon, and aluminum were carried out. The effect of various parameters including leaching temperature, KOH concentration, leaching time, alkali-to-ore mass ratio and particle size on the agitation leaching was examined. When finely ground ore (-61 mu m) reacted with KOH solution (84 wt.%) in a mass ratio of alkali-to-ore of 7:1 at 300 degrees C for 60 min, almost complete extraction of both niobium and tantalum was achieved while the extraction of titanium was 85% and the extraction of other impurities in the ore was less than 35%. (c) 2005 Elsevier B.V. All rights reserved.
英文摘要	The recovery of niobium and tantalum from a low-grade niobium-tantalum ore by using highly concentrated caustic potash as an alternative to hydrofluoric acid has been investigated. Experiments on the leaching behavior of niobium and tantalum, as well as other associated impurities, such as titanium, iron, manganese, silicon, and aluminum were carried out. The effect of various parameters including leaching temperature, KOH concentration, leaching time, alkali-to-ore mass ratio and particle size on the agitation leaching was examined. When finely ground ore (-61 mu m) reacted with KOH solution (84 wt.%) in a mass ratio of alkali-to-ore of 7:1 at 300 degrees C for 60 min, almost complete extraction of both niobium and tantalum was achieved while the extraction of titanium was 85% and the extraction of other impurities in the ore was less than 35%. (c) 2005 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Metallurgy & Metallurgical Engineering
研究领域[WOS]	Metallurgy & Metallurgical Engineering
收录类别	SCI
原文出处	://WOS:000233268600010
语种	英语
WOS记录号	WOS:000233268600010
公开日期	2013-10-25
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4185]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhou, HM,Zheng, SL,Zhang, Y. Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution[J]. HYDROMETALLURGY,2005,80(1-2):83-89.
APA	Zhou, HM,Zheng, SL,&Zhang, Y.(2005).Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution.HYDROMETALLURGY,80(1-2),83-89.
MLA	Zhou, HM,et al."Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution".HYDROMETALLURGY 80.1-2(2005):83-89.

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