Softening-melting Properties of High-chromium Vanadium–titanium Magnetite Pellets with Different Basicity
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- Chen Bojian
- Northeastern University, School of Metallurgy
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- Wen Jing
- Northeastern University, School of Metallurgy
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- Jiang Tao
- Northeastern University, School of Metallurgy Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) Northeastern University Shenyang Liaoning Key Laboratory for Metallurgical Sensor and Technology
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- Li Lin
- Northeastern University, School of Metallurgy
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- Yu Tangxia
- Northeastern University, School of Metallurgy
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- Tang Wenbo
- State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Panzhihua Sichuan
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- Hu Peng
- State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Panzhihua Sichuan
抄録
<p>High-chromium vanadium-titanium magnetite (HVTM) is a critical polymetallic ore resource, and its large-scale utilization is considered feasible by smelting flux pellets in blast furnaces. This study investigated the softening-melting properties of pure HVTM pellets (100% HVTM pellets) and HVTM with 30% conventional iron pellets (70% HVTM pellets) with different basicity (R). The results indicated that the softening-melting properties of 100% HVTM pellets deteriorated when R increased from 0.2 to 1.8, and the properties of 70% HVTM pellets first deteriorated and then improved. Moreover, 100% HVTM pellets exhibited superior softening-melting properties for R<1.0, while 70% HVTM flux pellets were better at R>1.6. The gas permeability of 100% and 70% HVTM pellets decreased with increasing basicity, although the permeability of 70% HVTM pellets was higher. Notably, the key components of acid slag are Mg-bearing anosorite and pyroxene, whereas those of basic slag are perovskite and melilite. With the increase of basicity, the content of chromium in dropping iron decreased and that of vanadium increased.</p>
収録刊行物
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- ISIJ International
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ISIJ International 63 (10), 1607-1618, 2023-10-15
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390860764355887488
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- ISSN
- 13475460
- 09151559
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可