Thermodynamic Analysis on Mineralogical Phase Precipitation in Cooling Process of Continuous Casting Mold Flux for Fe-Ni-Cr Alloy

Hou Yu; Geng Xin; Li Boyang; Li Xiaokai; Jiang Zhouhua

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Thermodynamic Analysis on Mineralogical Phase Precipitation in Cooling Process of Continuous Casting Mold Flux for Fe-Ni-Cr Alloy

更新时间：2025-10-28

- Thermodynamic Analysis on Mineralogical Phase Precipitation in Cooling Process of Continuous Casting Mold Flux for Fe-Ni-Cr Alloy
- Special Steel Vol. 43, Issue 1, Pages: 1-5(2022)
- 作者机构：
  
  东北大学冶金学院,沈阳,110819
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：14 May 2021，
  
  Online First：09 January 2023，
  
  Published：09 January 2022
- 稿件说明：
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Hou Yu, Geng Xin, Li Boyang, et al. Thermodynamic Analysis on Mineralogical Phase Precipitation in Cooling Process of Continuous Casting Mold Flux for Fe-Ni-Cr Alloy[J]. Special Steel, 2022, 43(1): 1-5.
DOI：

Hou Yu, Geng Xin, Li Boyang, et al. Thermodynamic Analysis on Mineralogical Phase Precipitation in Cooling Process of Continuous Casting Mold Flux for Fe-Ni-Cr Alloy[J]. Special Steel, 2022, 43(1): 1-5. DOI：

摘要

采用 Factsage 热力学软件计算和实验室研究相结合的方法，探究碱度 ( 0. 8 ～ 1. 2 ) 、BaO 含量 ( 5% ～ 15% ) 、B

含量(5% ～15% ) 对 Fe-Ni-Cr 系耐蚀合金连铸保护渣 CaO-SiO

-Al

-CaF

-Na

O-MgO 系冷却过程矿相析出的影响。结果表明，当熔渣碱度由 0. 8 升高到 1. 2 时，析晶温度由1 201．7 ℃ 升高到1 256．4 ℃，硅酸盐含量从 83. 1% 降低到 79. 6% ; 熔渣中 BaO≤10% 时，随着 BaO 含量的升高，熔渣中晶体析出会受到抑制。当熔渣中添加 10% BaO 时，晶体析出总量降低到 61. 1 % ; 当熔渣中添加 10% B

时，晶体析出温度降低到1 086．7 ℃，晶体析出量降低为 66. 3% ; B

含量≤10% 时，可以促进熔渣玻璃化。最佳碱度为 1．0，BaO 或 B

加入量为 10% 。

Abstract

Using Factsage thermodynamic software to calculate in combination with laboratory research

the effects of basicity( 0.8 ～1.2 )

BaO( 5% ～15% ) and B

( 5% ～15% )content on mineralogical phases precipitation of CaO-SiO

- Al

-CaF

-Na

O-MgO series mold fluxes for Fe-Ni-Cr corrosion resistant alloy during cooling are investigated. Results show that with the basicity of slag increasing form 0. 8 to 1. 2

the crystallization temperature increases from 1 201.7°C to 1 256. 4 °C ;the

amount of precipitation of silicate minerals in slag decreases from 83. 1% to 79. 6% ;with the BaO content in the slag W10%

the crystal precipitation in the slag will be inhibited with the increase of BaO content. When 10% BaO is added to the slag

the total amount of crystal precipitation decreases to 61. 1 %. When 10% B

is added to slag

the crystallization temperature decreases to 1 086

7 °C

and crystal precipitation is reduces to 66. 3% ;with B

not less than 10%

and the phase formed by the slag is glass phase. The optimized basicity of slag is 1.0

and the added amaunt of BaO or B

is 10% .

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