TY - JOUR
T1 - Thermodynamic evaluation for reduction of iron oxide ore particles in a high temperature drop tube furnace
AU - Chen, Zhiyuan
AU - Qu, Yingxia
AU - Zeilstra, Christiaan
AU - van der Stel, Jan
AU - Sietsma, Jilt
AU - Yang, Yongxiang
PY - 2018
Y1 - 2018
N2 - Melting and reduction of fine iron ore particles in the gas environment of a HIsarna smelting cyclone is a critically important topic, but very limited information is currently available except for some experimental data from high temperature drop tube furnace (HTDF). This work discusses the equilibrium state of reacting iron ore in the HTDF environment by thermodynamic calculations to strengthen the understanding of the HIsarna process. The limit of reduction termination of the ore particles was estimated in the calculation for the thermal decomposition and topochemical gas reduction. The theoretical calculation results are compared with the experimental data from the previous studies. Furthermore, variation of slag composition and iron valence states were estimated theoretically to understand the effects of post combustion ratio value and hydrogen/carbon ratio on the equilibrium state of the ore particles in the reducing gas.
AB - Melting and reduction of fine iron ore particles in the gas environment of a HIsarna smelting cyclone is a critically important topic, but very limited information is currently available except for some experimental data from high temperature drop tube furnace (HTDF). This work discusses the equilibrium state of reacting iron ore in the HTDF environment by thermodynamic calculations to strengthen the understanding of the HIsarna process. The limit of reduction termination of the ore particles was estimated in the calculation for the thermal decomposition and topochemical gas reduction. The theoretical calculation results are compared with the experimental data from the previous studies. Furthermore, variation of slag composition and iron valence states were estimated theoretically to understand the effects of post combustion ratio value and hydrogen/carbon ratio on the equilibrium state of the ore particles in the reducing gas.
KW - gas–solid particle reduction
KW - haematite ore
KW - HIsarna process
KW - thermodynamics
UR - http://resolver.tudelft.nl/uuid:fd1e3813-88f4-4c66-8794-1fcb489c035d
UR - http://www.scopus.com/inward/record.url?scp=85050915769&partnerID=8YFLogxK
U2 - 10.1080/03019233.2018.1498762
DO - 10.1080/03019233.2018.1498762
M3 - Article
AN - SCOPUS:85050915769
VL - 47 (2020)
SP - 173
EP - 177
JO - Ironmaking & Steelmaking: processes, products and applications
JF - Ironmaking & Steelmaking: processes, products and applications
SN - 0301-9233
IS - 2
ER -