Reducibility Optimization and Reaction Mechanism of High-Chromium Vanadium–Titanium Magnetite Flux Pellets

Chen, Bojian; Jiang, Tao; Wen, Jing; Zhu, Fang; Hu, Peng; Rao, Jinghai

doi:10.1007/s11663-023-02851-z

Cited by 3 publications

(1 citation statement)

References 42 publications

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“…In China, they are mainly distributed in Panzhihua, Chengde, Ma'anshan, and Chaoyang in Liaoning Province, among other regions, with a wide distribution and rich reserves [4,5]. The smelting of vanadium-titanium ore is primarily carried out using the blast furnace process, which is employed by Chengde Iron & Steel, Panzhihua Iron & Steel, the Jianlong Group in China, and some steel mills in Russia [6][7][8]. Due to the coarse particle size of vanadium-titanium ore suitable for sintering raw materials, the current blast furnace smelting of vanadiumtitanium ore comprehensive burden structure is mainly a "high basicity sinter + acidic pellet + lump ore", and the proportion of sinter has long been maintained at more than 70% [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Vanadium–Titanium Sinter Basicity on Cohesive Dripping Properties of Blast Furnace Comprehensive Burden

Ning,

Wang,

Yang

2024

Minerals

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Vanadium–titanium ore possesses significant mining and utilization value. The basicity of vanadium–titanium sinter has a direct impact on the formation, location, thickness, permeability, and heat exchange of the cohesive zone in the blast furnace. This paper investigated the influence of increasing the basicity of the sinter on the comprehensive burden’s cohesive dripping properties in the blast furnace, while keeping the final slag basicity constant. This study was conducted through cohesive dripping property experiments. The findings indicated that as the sinter basicity in the comprehensive burden structure increased and the corresponding increase in the proportion of pellets occurred, the softening performance of the comprehensive burden improved, the cohesive zone became thinner, the lower edge of the cohesive zone shifted upward, and the softening melting properties became better in general. With an increase in the sinter basicity, the dripping difference pressure of the comprehensive burden decreased, and the dripping rate firstly increased and then decreased. An increase in the sinter basicity of the comprehensive burden structure promoted V reduction, and the V element yield and Cr element yield of the sinter were both increased; the optimal sinter basicity was 2.5, and the corresponding pellet proportion was 42%.

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