Effect of TiO2 on the Viscosity and Slag Structure in Blast Furnace Type Slags

被引：211

作者：

Park, Hyunsik

Park, Jun-Young ^{[1
]}

Kim, Gi Hyun ^{[1
]}

Sohn, Il ^{[1
]}

机构：

[1] Yonsei Univ, Seoul 120749, South Korea

来源：

STEEL RESEARCH INTERNATIONAL | 2012年 / 83卷 / 02期

基金：

美国国家科学基金会;

关键词：

TiO2; viscosity; Raman; FTIR; slag; silicate; depolymerizing; OXIDE; THERMODYNAMICS; REDUCTION; CAO-SIO2; GLASSES; CAF2; NA2O;

D O I：

10.1002/srin.201100249

中图分类号：

TF [冶金工业];

学科分类号：

080601 [冶金物理化学];

摘要：

TiO2 additions up to 10?mass% behaved as a basic oxide and lowered the viscosity in the CaOSiO217?mass% Al2O310?mass% MgO-based slags by depolymerizing the silicate network structure. Raman spectroscopy revealed the sum of NBO/Si 1 and 3 decreased while the sum of NBO/Si 2 and 4 increased with TiO2 content. Unlike the silicate structures, the aluminate structures seems to be relatively unaffected by TiO2 additions according to the FTIR results. 5?mass% TiO2 significantly decreased the viscosity compared to the TiO2 free slags, but beyond 5?mass% TiO2 meaningful changes in the viscosity was not observed. From the comparison of the viscosity at constant TiO2 of 5 and 10?mass% and varying CaO/SiO2 ratio, increasing the CaO/SiO2 ratio was more effective in decreasing the viscosity than TiO2 additions.

引用

页码：150 / 156

页数：7

共 33 条

[1]

Structural analysis and devitrification of glasses based on the CaO-MgO-SiO2 system with B2O3, Na2O, CaF2 and P2O5 additives [J].