Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore Fines at Low Temperatures
Joint Authors
Du, Wenguang
Yang, Song
Pan, Feng
Shangguan, Ju
Lu, Jie
Liu, Shoujun
Fan, Huiling
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-03-05
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Surplus coke oven gases (COGs) and low grade hematite ores are abundant in Shanxi, China.
Our group proposes a new process that could simultaneously enrich CH4 from COG and produce separated magnetite from low grade hematite.
In this work, low-temperature hydrogen reduction of hematite ore fines was performed in a fixed-bed reactor with a stirring apparatus, and a laboratory Davis magnetic tube was used for the magnetic separation of the resulting magnetite ore fines.
The properties of the raw hematite ore, reduced products, and magnetic concentrate were analyzed and characterized by a chemical analysis method, X-ray diffraction, optical microscopy, and scanning electron microscopy.
The experimental results indicated that, at temperatures lower than 400°C, the rate of reduction of the hematite ore fines was controlled by the interfacial reaction on the core surface.
However, at temperatures higher than 450°C, the reaction was controlled by product layer diffusion.
With increasing reduction temperature, the average utilization of hydrogen initially increased and tended to a constant value thereafter.
The conversion of Fe2O3 in the hematite ore played an important role in the total iron recovery and grade of the concentrate.
The grade of the concentrate decreased, whereas the total iron recovery increased with the increasing Fe2O3 conversion.
American Psychological Association (APA)
Du, Wenguang& Yang, Song& Pan, Feng& Shangguan, Ju& Lu, Jie& Liu, Shoujun…[et al.]. 2017. Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore Fines at Low Temperatures. Journal of Chemistry،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1171426
Modern Language Association (MLA)
Du, Wenguang…[et al.]. Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore Fines at Low Temperatures. Journal of Chemistry No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1171426
American Medical Association (AMA)
Du, Wenguang& Yang, Song& Pan, Feng& Shangguan, Ju& Lu, Jie& Liu, Shoujun…[et al.]. Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore Fines at Low Temperatures. Journal of Chemistry. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1171426
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1171426