BaO 和 Li2O 对 CaO 基脱硫精炼渣熔点和粘度的影响

特殊钢 ›› 2005, Vol. 26 ›› Issue (4): 16-18.

BaO 和 Li₂O 对 CaO 基脱硫精炼渣熔点和粘度的影响

李桂荣, 祝贞学,戴起勋, 王宏明

江苏大学材料科学与工程学院，镇江212013

收稿日期:2005-01-19 出版日期:2005-08-01 发布日期:2023-04-08
作者简介:李桂荣(1976-),女，博士研究生，从事炼钢工艺研究。
基金资助:
国家自然科学基金项目(50474037),
江苏省高校自然科学研究项目(04BJK430022)

Effect of BaO and Li₂O on Melting Point and Viscosity of CaO-Based Refining Fluxes for Desulphuration

Li Guirong,Zhu Zhenxue,Dai Qixun and Wang Hongming

School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013

Received:2005-01-19 Published:2005-08-01 Online:2023-04-08

摘要/Abstract

摘要： 以CaO(bal)-SiO₂(22.4%)-Al₂O₂(11.6%)-CaF₂(10%)精炼渣作为基础渣系,用BaO、Li₂O替代其中等量的CaO含量,固定(CaO+RxO)/SiO₂=2.5(RxO代表BaO或者Li₂O),对该脱硫精炼渣系的熔点和粘度进行了研究。结果显示在传统的CaO基熔渣中加入BaO、Li₂O可以降低渣系的熔点和粘度,有效地改善了渣钢反应的动力学条件。当(BaO,Li₂O)=15%时,熔渣的熔点分别为1267℃和1185℃,远低于不加添加剂时的熔点1326℃,当温度为1475℃时,熔渣粘度分别为0.98Pa·s和0.51Pa·s,远小于不加添加剂时的粘度1.79Pa·s,使渣系具有良好的流动性和熔化性能。

关键词: CaO 基熔渣, BaO, , Li₂O, , 熔点, 粘度

Abstract: The melting point and viscosity of refining fluxes for desulphuration have been studied of which CaO (balance)-SiO₂(22.4%)-Al₂O₂(11.6%)-CaF₂(10%) refining slag was as basic flux, when the ratio of (CaO+RxO)/SiO₂ was fixed at 2.5(where RxO- BaO or Li₂O), the BaO or Li₂O added and replaced equivalent CaO content in flux. The results showed that the melting point and viscosity of fuxes decreased by added BaO or Li₂O in CaO basic slag effectively to improve the dynamics condition of metal- slag reaction. With 15% BaO or 15%Li₂O,the melting point of flux was 1267 ℃ or 1185 ℃ which were far lower than that of flux free additions- 1326 ℃,and the viscosity of flux at 1475 ℃ was 0.98 Pa · s or 0.51 Pa · s which were also far lower than that of flux free additions- 1.79 Pa · s to make the fluxes had excellent flu- idity and melting capacity.

Key words: , CaO Based Fux,BaO,Li?O,Melting Point,Viscosity

李桂荣, 祝贞学, 戴起勋, 王宏明. BaO 和 Li₂O 对 CaO 基脱硫精炼渣熔点和粘度的影响[J]. 特殊钢, 2005, 26(4): 16-18.

Li Guirong, Zhu Zhenxue, Dai Qixun , Wang Hongming. Effect of BaO and Li₂O on Melting Point and Viscosity of CaO-Based Refining Fluxes for Desulphuration[J]. Special Steel, 2005, 26(4): 16-18.

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BaO 和 Li₂O 对 CaO 基脱硫精炼渣熔点和粘度的影响

Effect of BaO and Li₂O on Melting Point and Viscosity of CaO-Based Refining Fluxes for Desulphuration

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