Reaction kinetics during direct alloying of manganese ore cored wire

Wu, Wei; Gao, Qi; Zhang, Bo; Meng, Hua-dong; Lin, Lu; Zeng, Jia-qing

doi:10.1007/s42243-020-00363-7

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The experiment was carried out in a 500 kg induction furnace with top blowing oxygen and bottom blowing nitrogen. The expected target compositions of high-manganese slag and molten steel [1,20] are listed in Table 2.…”

Section: Test Equipment and Schemementioning

confidence: 99%

Study on Efficient Use of High‐Manganese Pig Iron

Zhao

Yang

et al. 2023

steel research int.

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The smelting process of high‐manganese pig iron is studied to determine ways to efficiently utilize the by‐product of manganese‐rich slag. This process consists of two stages: 1) demanganese and carbon retention and 2) decarbonization and dephosphorization. In the first stage, oxygen is supplied at 0.5–2.0 Nm3 t−1 min−1. The temperature is controlled between 1300 and 1400 °C by adding iron ore to the molten bath. Ultimately, high‐manganese slag, which contains more than 50% manganese oxide and semisteel with 3.2% carbon, is produced. In the second stage, oxygen is supplied at 2.0−5.0 Nm3 t−1 min−1 and slag‐forming materials are added to the molten bath for the dephosphorization and desulfurization of the hot metal. Consequently, the iron oxide, manganese oxide, and silicon oxide contents of the high‐manganese slag and the carbon, manganese, phosphorus, and sulfur contents of the semisteel are 10.8–15.3%, 70–77%, and 3–7%, and 3.2–4.2%, 0.3–1.0%, 0.12–0.22%, and 0.01–0.024%, respectively. The main mineral phases of high‐manganese slag, 2MnO·SiO2 and FeO·MnO·SiO2, are suitable for the preparation of high‐carbon ferromanganese raw materials. After further smelting, clean molten steel containing 0.03−0.08%, 0.08−0.20%, 0.005−0.02%, and 0.01−0.024% carbon, manganese, phosphorus, and sulfur, respectively, is obtained.

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Section: Test Equipment and Schemementioning

confidence: 99%

Study on Efficient Use of High‐Manganese Pig Iron

Zhao

Yang

et al. 2023

steel research int.

Self Cite

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Effects of MnO on the Dissolution Behavior of Lime in CaO–SiO2–FeO–P2O5–MnO Slag

Sun

Xia

et al. 2023

Metall Mater Trans B

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Effect of direct alloying of manganese ore–cored wires on the composition and quality of molten steel

Wu,

Zhao,

Liang

et al. 2024

Ironmaking & Steelmaking: Processes, Products and Applicati

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This research involved investigating the effects of different manganese ore addition methods on the quality of molten steel. From the thermodynamic point of view, when carbon powder, an aluminium block, silicon carbide, ferrosilicon and other reducing agents were added during the refining process, the manganese yield substantially increased at 1550 °C; the reduction abilities of the involved reducing agents were in the following order: aluminium block > silicon > silicon carbide > graphite. For top-slag addition, the mass transfer rate of manganese was lesser in molten steel than in slag, indicating that it was the limiting factor. For nonaluminium deoxidation, the inclusions in high-carbon steel were primarily manganese sulfide (MnS), along with a small amount of silicates. Medium-carbon steel contained small amounts of silicon oxide, magnesium oxide and alumina. In aluminium deoxidation, the inclusions in the involved steel were primarily alumina. The average inclusion size for cored-wire alloying with ferrosilicon as the reducing agent was 2.10 μm, with the inclusion density and manganese yield being 0.10/μm 2 and 93.46%, respectively. This alloying process was found to be optimal for direct alloying of manganese ore.

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Reaction kinetics during direct alloying of manganese ore cored wire

Cited by 3 publications

References 21 publications

Study on Efficient Use of High‐Manganese Pig Iron

Study on Efficient Use of High‐Manganese Pig Iron

Effects of MnO on the Dissolution Behavior of Lime in CaO–SiO2–FeO–P2O5–MnO Slag

Effect of direct alloying of manganese ore–cored wires on the composition and quality of molten steel

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