HIsarna: A Technology to Meet Both the Climate and Circularity Challenges for the Iron and Steel Industry

Boggelen, Johan van; Hage, Hans; Meijer, Koen; Zeilstra, Christiaan

doi:10.1007/978-3-030-92563-5_63

Cited by 3 publications

(7 citation statements)

References 4 publications

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“…in case of hydrogen induced cracking resistant steel. [1][2][3][4] The main purpose of hot metal pretreatment (HMP) is refining of HM from impurities including sulfur via strong chemical reactions between HM, refining flux, and carryover slag.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Simulation of Hot Metal Pretreatment: Desulfurization Using Powder Injection

Moosavi-Khoonsari

Ende

Jung

2022

Metall Mater Trans B

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A kinetic model for hot metal pre-treatment process was developed. The co-injection of soluble magnesium and insoluble lime, and both of the transitory and permanent contact reaction zones were considered in the present model. That is, the model covers all the general features of hot metal desulfurization in the submerged powder injection, practiced at steel plants. The model was based on the effective equilibrium reaction zone approach in combination with FactSage thermodynamic databases. The process was divided into a finite number of reaction zones, and effective reaction volumes of each reaction zone were determined as a function of process parameters based on physical descriptions of reactions' mechanisms. The present model can be applied to a wide range of HM and top slag chemistries, and can calculate compositional evolution of both hot metal and slag during the process. The accuracy of model was compared to the sampled plant data. The current model was also utilized to study the potential for further optimization of the existing hot metal pretreatment process at a steel pant.

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Section: Introductionmentioning

confidence: 99%

Kinetic Simulation of Hot Metal Pretreatment: Desulfurization Using Powder Injection

Moosavi-Khoonsari

Ende

Jung

2022

Metall Mater Trans B

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“…Furthermore, the HIsarna off gas is better suited for carbon capture and storage or carbon capture and usage, which could lead to a total CO 2 reduction of 80%. [2][3][4][5][6] Due to the less reducing environment in the lower part of HIsarna, compared with the BF, the HIsarna hot metal typically contains very little silicon, low phosphorus and manganese, and slightly less carbon. In contrast, the sulfur and oxygen concentrations are higher.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, the sulfur and oxygen concentrations are higher. [5][6][7] Table 1 gives a typical composition of the hot metal from HIsarna and the BF.…”

Section: Introductionmentioning

confidence: 99%

“…The hot metal is tapped separately from the slag, which implies that no hot metal-slag reactions will take place after tapping and no carryover slag is conveyed together with the hot metal to the steel plant. [2][3][4][5][6][7][8] Trials at the pilot HIsarna at Tata Steel in IJmuiden, the Netherlands, show sulfur concentrations between 0.03 and 0.2 wt%. High sulfur concentrations are caused by both a higher sulfur input via coal and a higher oxygen activity (a O ) in HIsarna, which hamper the desulfurization of the hot metal.…”

Section: Introductionmentioning

confidence: 99%

“…However, when the sulfur input via coal and coke is equal, HIsarna hot metal will have a higher sulfur concentration than BF hot metal. [3,[5][6][7] This means that at an integrated steelmaking site, where a BF is replaced by the HIsarna process, more sulfur needs to be removed by hot metal desulfurization (HMD), prior to the converter process. This typically leads to a longer processing time at the HMD station.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Desulfurization of High‐Sulfur HIsarna Hot Metal

Schrama

Beunder

Emami

et al. 2021

steel research int.

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Smelting Reduction of HIsarna Slag with Methane

Htet,

Yan,

Hage

et al. 2024

steel research int.

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To study the smelting reduction behavior of methane in the HIsarna process, the isothermal reduction experiments of HIsarna slag with 6 wt% of FeO were conducted at the temperatures of 1450, 1475, and 1550 °C, using 5 vol% CH4‐Ar. The effect of the gas injection flow rate on the overall reduction rate was investigated in the range of 0.5–1.5 L min−1. The results confirm that the decomposed carbon black acts as the dominant reductant in the reduction process compared to hydrogen. Increased gas flow rate increases the reaction rate, while temperature shows no significant effect. The reduction process could be described by the JMAEK model: by fixing the gas flow rate at 1.0 L min−1 with different temperatures, the exponent n value is around 1.5, indicating FeO mass transfer is the limiting step since there are sufficient carbon blacks as nucleation sites. The reduction process follows the first‐order model controlled by the reactant concentration with the gas flow rate being at 0.5 L min−1 and in the second reaction stage of the gas flow rate at 1.5 L min−1. The determined activation energy for the methane reduction is 59.8 kJ mol−1.

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HIsarna: A Technology to Meet Both the Climate and Circularity Challenges for the Iron and Steel Industry

Cited by 3 publications

References 4 publications

Kinetic Simulation of Hot Metal Pretreatment: Desulfurization Using Powder Injection

Kinetic Simulation of Hot Metal Pretreatment: Desulfurization Using Powder Injection

Desulfurization of High‐Sulfur HIsarna Hot Metal

Smelting Reduction of HIsarna Slag with Methane

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