Viscosity of Flux for Steel Refining

钢精炼剂的粘度

• 批准号: 06650841
• 负责人: MORI Katsumi
• 金额: $ 0.45万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650841/
• 关键词: Flux; Viscosity; Prototype rotating viscometer; Brosilicate melts; 溶融スラグ; るつぼ回転粘度計; B_2O_3系スラグ

A prototype outer cylinder rotating viscometer was built, and tested at room temperature. The viscosity of binary Na_2O-B_2O_3 and ternary B_2O_3-SiO_2-Na_2O systems have been measured in the approximate temperature range 800ﾟ to 1100ﾟC by the viscometer. The following results are obtained :(1)The viscometer was suitable for the measurement of the viscosity range from 10^<-2> to 10^2 Pa s, and at a temperature up to 1600ﾟC.(2)Viscosity isotherms of binary Na_2O-B_2O_3 melts showed a minimum value at about 10mol% Na_2O followed by a maximum value at about 20mol% Na_2O as the Na_2O concentration was increased. With increasing temperature, the minimum and the maximum became less prominent.(3)The shape of the viscosity isotherms of binary Na_2O-B_2O_3 melts could be quantitatively explained by an equilibrium between BO_3 and BO_4(4)Iso-viscosity lines of ternary B_2O_3-SiO_2-Na_2O melts, and of pseudo-ternary system [BO_3]-Na_2O-[SiO_2+BO_4] were provided.

建造了原型外筒旋转粘度计，并在室温下进行了测试。用粘度计在大约800℃到1100℃的温度范围内测量了二元Na_2O-B_2O_3和三元B_2O_3-SiO_2-Na_2O体系的粘度。结果表明:(1)粘度计适用于测量10^<-2>至10^2 Pa·s,温度可达1600℃。(2)二元Na_2O-B_2O_3熔体的粘度等温线在10mol%Na_2O处出现最小值,在20mol%Na_2O处出现最大值。 Na_2O浓度增加。随着温度的升高,最小值和最大值变得不那么明显。(3)二元Na_2O-B_2O_3熔体的粘度等温线形状可以通过BO_3和BO_4之间的平衡来定量解释(4)三元B_2O_3-SiO_2-Na_2O熔体和拟三元体系的等粘度线 提供了[BO_3]-Na_2O-[SiO_2+BO_4]。