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2023110 · Abstract Among heavy industrial sectors worldwide, the steel industry ranks first in carbon dioxide (CO 2) emissions. Technologies that produce direct reduced iron (DRI) enable the industry to reduce emissions or even approach net-zero CO 2 emissions for steel production. Herein, comprehensive cradle-to-gate (CTG) life cycle analysis (LCA) and …
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2018727 · 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.
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202373 · Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary kiln follower by magnetic separation. Under the conditions, reductive temperature of 1150°C, duration time of 60 min, mass ratio of briquettes to pea coal of 1:1, the reduced iron …
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202373 · Abstract and Figures Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary ...
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201889 · Guo et al. [16] studied kinetics and mechanisms of direct reduction of iron ore-biomass composite pellets with hydrogen gas. It is concluded that higher temperature can improve reduction rate and reducibility and the reduction rate was controlled by an interfacial chemical reaction with H 2. Reductions of oxidized pellets in 75%H 2 25%N 2 …
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2022820 · This work describes a system for the co-production of syngas and direct reduced iron (DRI) though the synergetic conversion of biomass and iron ore. I…
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Abstract Iron and steel industry contributes by more than 5% to the global anthropogenic CO 2 emissions, so new ways to reduce the emissions in this industrial sector must be found. In order to facilitate a transition to more sustainable production concepts, economic factors must be considered. The potential of using direct reduced iron from the Midrex process, …
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202412 · The kinetics analysis of the gaseous reduction of iron ore by H 2 has been conducted in previous literature, as shown in Table 1. Thermogravimetric analysis is widely used to study the reduction kinetics of iron oxide particles, but the reaction is influenced by external diffusion and deviates somewhat from the intrinsic reaction process.
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DRI production. Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, i.e. without melting, as in the blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. Iron ore is used mostly in pellet and/or lumpy form.
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