Deep dephosphorization ability of BaO-CaO-CaF<sub>2</sub> flux for liquid steel

TIAN Zhihong; KONG Xiangtao; CAI Kaike; WANG Xinhua; WANG Tao; SHI Hongzhi; ZHU Lixin

doi:10.13374/j.issn1001-053x.2005.03.010

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TIAN Zhihong, KONG Xiangtao, CAI Kaike, WANG Xinhua, WANG Tao, SHI Hongzhi, ZHU Lixin. Deep dephosphorization ability of BaO-CaO-CaF2 flux for liquid steel[J]. Chinese Journal of Engineering, 2005, 27(3): 294-297. doi: 10.13374/j.issn1001-053x.2005.03.010

Citation:

TIAN Zhihong, KONG Xiangtao, CAI Kaike, WANG Xinhua, WANG Tao, SHI Hongzhi, ZHU Lixin. Deep dephosphorization ability of BaO-CaO-CaF₂ flux for liquid steel[J]. Chinese Journal of Engineering, 2005, 27(3): 294-297. doi: 10.13374/j.issn1001-053x.2005.03.010

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Deep dephosphorization ability of BaO-CaO-CaF₂ flux for liquid steel

doi: 10.13374/j.issn1001-053x.2005.03.010

1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Baoshan Iron and Steel CO, Shanghai 201900, China

Received Date: 2004-01-28
Rev Recd Date: 2004-04-10

Available Online: 2021-08-17

Abstract

Abstract

Deep dephosphorization experiment was carried out in the laboratory by BaO-CaO-CaF₂ flux to obtain ultra-low phosphorus steel. The result showed that the P content of the tested steel could decrease from about 0.01% to 0.005% or even lower to 0.002% with a dephosphorization ratio of 50% by use of this kind of flux. It is found that the oxidizability of steel has significant effect on dephosphoriztion when using the BaO-CaO-CaF₂ flux. The phosphate capacity of the used system varied from 10¹⁸ to 10^19.35 in 1813~1893 K and increased with the increase of BaO content.
- BaO-CaO-CaF₂ flux,
- ultra-low phosphorus steel,
- deep dephosphorization,
- phosphate capacity