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Innovative technology for processing saprolitic laterite ores by hydrochloric acid atmospheric pressure leaching
Alternative TitleMiner. Eng.
Guo, Q.; Qu, J. K.; Han, B. B.; Zhang, P. Y.; Song, Y. X.; Qi, T.
2015
Source PublicationMinerals Engineering
Issue0Pages:1-6
Abstract

An innovative technology for processing saprolitic laterite ores from the Philippines by hydrochloric acid atmospheric leaching and spray hydrolysis is proposed. The factors that affect the hydrochloric acid atmospheric leaching of the laterite ores and spray hydrolysis of the atmospheric acid leach solution are investigated. Experimental results show that the leaching of Ni, Fe, and Mg is 98.9 wt%, 97.8 wt%, and 80.9 wt%, respectively, under optimal acid leaching conditions. The hydrolysis of Ni and Fe by the atmospheric acid leach solution approaches 100 wt% at the temperature range of 450-500 degrees C. Characterization results show that a serpentine mineral, nominally Mg3Si2O5(OH)(4), is the major component and goethite, FeO(OH), is the minor one in the laterite ores. Treatment by hydrochloric acid atmospheric leaching breaks the mineral lattices of the laterite ores and makes amorphous silica the primary product in the atmospheric acid leach residue. The grade of Ni in the hydrolyzate increases to 4.55%. The hydrolyzate with high Ni content can be utilized for ferro-nickel production. (C) 2014 Elsevier Ltd. All rights reserved.

KeywordSaprolitic Laterite Ores Hydrochloric Acid Atmospheric Leaching Spray Hydrolysis Ferro-nickel Nickel Laterite Limonitic Laterite Sodium-sulfate Sulfuric-acid Part i Reduction Indonesia Kinetics
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Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11737
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Guo, Q.,Qu, J. K.,Han, B. B.,et al. Innovative technology for processing saprolitic laterite ores by hydrochloric acid atmospheric pressure leaching[J]. Minerals Engineering,2015(0):1-6.
APA Guo, Q.,Qu, J. K.,Han, B. B.,Zhang, P. Y.,Song, Y. X.,&Qi, T..(2015).Innovative technology for processing saprolitic laterite ores by hydrochloric acid atmospheric pressure leaching.Minerals Engineering(0),1-6.
MLA Guo, Q.,et al."Innovative technology for processing saprolitic laterite ores by hydrochloric acid atmospheric pressure leaching".Minerals Engineering .0(2015):1-6.
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