NDLI: Staged reaction kinetics and characteristics of iron oxide direct reduction by carbon

Content Provider	Springer Nature Link
Author	Wei, Ru fei Cang, Da qiang Zhang, Ling ling Bai, Yuan yuan
Copyright Year	2015
Abstract	Staged reduction kinetics and characteristics of iron oxide direct reduction by carbon were studied in this work. The characteristics were investigated by simultaneous thermogravimetric analysis, X-ray diffraction (XRD), and quadrupole mass spectrometry. The kinetics parameters of the reduction stages were obtained by isoconversional (model-free) methods. Three stages in the reduction are Fe$_{2}$O$_{3}$→Fe$_{3}$O$_{4}$, Fe$_{3}$O$_{4}$→FeO, and FeO→Fe, which start at 912 K, 1255 K, and 1397 K, respectively. The CO content in the evolved gas is lower than the CO$_{2}$ content in the Fe$_{2}$O$_{3}$→Fe$_{3}$O$_{4}$ stage but is substantially greater than the CO$_{2}$ contents in the Fe$_{3}$O$_{4}$→FeO and FeO→Fe stages, where gasification starts at approximately 1205 K. The activation energy (E) of the three stages are 126–309 kJ/mol, 628 kJ/mol, and 648 kJ/mol, respectively. The restrictive step of the total reduction is FeO→Fe. If the rate of the total reduction is to be improved, the rate of the FeO→Fe reduction should be improved first. The activation energy of the first stage is much lower than those of the latter two stages because of carbon gasification. Carbon gasification and Fe$_{ x }$O$_{ y }$ reduction by CO, which are the restrictive step in the last two stages, require further study.
Starting Page	1025
Ending Page	1032
Page Count	8
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	22
Issue Number	10
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2015-09-30
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	iron oxides direct reduction reduction kinetics reduction characteristics non-isothermal Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Reduction kinetics of iron oxide pellets with H$_{2}$ and CO mixtures

Non-isothermal reduction kinetics of titanomagnetite by hydrogen

Isothermal reduction of titanomagnetite concentrates containing coal

Formation kinetics of austenite in pearlitic ductile iron

Isothermal reduction kinetics of Panzhihua ilmenite concentrate under 30vol% CO–70vol% N$_{2}$ atmosphere

Dissolution kinetics of iron oxides in clay in oxalic acid solutions

Direct reduction of iron ore by biomass char

Kinetics of magnetite oxidation under non-isothermal conditions

Combustion characteristics and kinetics of anthracite with added chlorine

Staged reaction kinetics and characteristics of iron oxide direct reduction by carbon

Similar Documents

Reduction kinetics of iron oxide pellets with H$_{2}$ and CO mixtures

Non-isothermal reduction kinetics of titanomagnetite by hydrogen

Isothermal reduction of titanomagnetite concentrates containing coal

Formation kinetics of austenite in pearlitic ductile iron

Isothermal reduction kinetics of Panzhihua ilmenite concentrate under 30vol% CO–70vol% N$_{2}$ atmosphere

Dissolution kinetics of iron oxides in clay in oxalic acid solutions

Direct reduction of iron ore by biomass char

Kinetics of magnetite oxidation under non-isothermal conditions

Combustion characteristics and kinetics of anthracite with added chlorine

Staged reaction kinetics and characteristics of iron oxide direct reduction by carbon