Metal chromium preparation and the factors influencing chromium yield

Ye Mingfeng; Shi Qihua; Yu Bin; Chen Haijun

doi:10.7513/j.issn.1004-7638.2021.03.016

Volume 42 Issue 3

Jun. 2021

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Ye Mingfeng, Shi Qihua, Yu Bin, Chen Haijun. Metal chromium preparation and the factors influencing chromium yield[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 105-110. doi: 10.7513/j.issn.1004-7638.2021.03.016

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Ye Mingfeng, Shi Qihua, Yu Bin, Chen Haijun. Metal chromium preparation and the factors influencing chromium yield[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 105-110. doi: 10.7513/j.issn.1004-7638.2021.03.016

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Metal chromium preparation and the factors influencing chromium yield

doi: 10.7513/j.issn.1004-7638.2021.03.016

Ye Mingfeng^{1, 2
,},
Shi Qihua^{1, 2},
Yu Bin^{1, 2},
Chen Haijun^{1, 2}

1.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
State Key Laboratory of Comprehensive Utilization of Vanadium and Titanium Resources, Panzhihua 617000, Sichuan, China

Received Date: 2020-12-05
Publish Date: 2021-06-10

Abstract

Abstract

In this paper the burden parameters and influencing factors of chromium yield in preparing Grade 98 metal chromium with high purity chromium trioxide were studied. The results showed that part of the added reducing agent metal aluminum will enter the product metal chromium. In order to satisfy with composition requirements for metal chromium, the improvement of chromium yield will be limited indirectly. The optimal parameters of chromium smelting process are as follows: unit charge heat value is 3150 kJ/kg and aluminum distribution coefficient is 0.96. When CaO/Cr₂O₃ is 0.125, the highest chromium yield of 89.24% can be obtained is.The high-purity chromium trioxide produced by Panzhihua Iron and Steel Co. can be used to smelt JCr98 metal chromium containing 0.043% vanadium, which can meet the personalized requirements of downstream users.The high-purity chromium trioxide produced by Panzhihua Iron and Steel Co. can be used to smelt JCr98 metal chromium containing 0.043% vanadium, which can meet the personalized requirements of downstream users.
- metal chromium,
- chromium trioxide,
- impurity,
- yield,
- distribution ratio

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References(14)

References

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