activationpretreatmentoflimoniticlateriteoresbyalkaliroastingusingnaoh

	activationpretreatmentoflimoniticlateriteoresbyalkaliroastingusingnaoh
	Guo Qiang 1; Qu Jingkui 2; Qi Tao 2; Wei Guangye2 ; Han Bingbing 2
刊名	internationaljournalofmineralsmetallurgyandmaterials
	2012
卷号	19 期号:2 页码:100
ISSN号	1674-4799
英文摘要	Activation pretreatment of Cr-containing limonitic laterite ores by NaOH roasting to remove Cr, Al, and Si, as well as its effect on Ni and Co extraction in the subsequent pressure acid leaching process was investigated. Characterization results of X-ray diffraction (XRD) and scanning electron microscopy/X-ray energy dispersive spectroscopy (SEM/XEDS) show that goethite is the major Ni-bearing mineral, and chromite is the minor one. Experimental results show that the leaching rates of Cr, Al, and Si are 95.6wt%, 83.8wt%, and 40.1wt%, respectively, under the optimal alkali-roasting conditions. Compared with the direct pressure acid leaching of laterite ores, the leaching rates of Ni and Co increase from 80.1wt% to 96.9wt% and 70.2wt% to 95.1wt% after pretreatment, respectively. Meanwhile, the grade of acid leaching iron residues increases from 54.4wt% to 62.5wt%, and these residues with low Cr content are more suitable raw materials for iron making.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/34391]
专题	中国科学院过程工程研究所
作者单位	1.中国科学院 2.中国科学院过程工程研究所
推荐引用方式 GB/T 7714	Guo Qiang,Qu Jingkui,Qi Tao,et al. activationpretreatmentoflimoniticlateriteoresbyalkaliroastingusingnaoh[J]. internationaljournalofmineralsmetallurgyandmaterials,2012,19(2):100.
APA	Guo Qiang,Qu Jingkui,Qi Tao,Wei Guangye,&Han Bingbing.(2012).activationpretreatmentoflimoniticlateriteoresbyalkaliroastingusingnaoh.internationaljournalofmineralsmetallurgyandmaterials,19(2),100.
MLA	Guo Qiang,et al."activationpretreatmentoflimoniticlateriteoresbyalkaliroastingusingnaoh".internationaljournalofmineralsmetallurgyandmaterials 19.2(2012):100.