|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Physiochemical Properties of High Alumina Blast Furnace Slag
||Zhiming Yan, Zhengde Pang, Xuewei Lv, Guibao Qiu, Chenguang Bai
|On-Site Speaker (Planned)
As a result of the consumption and the rising cost of raw materials for ironmaking, steel producers have increased their utilization of low-cost, low-grade raw materials such as high alumina iron ore. The effect of Al2O3 and the Al2O3/SiO2 ratio on the viscosity, surface tension and sulfide capacity of the CaO- SiO2-Al2O3-MgO-TiO2 blast furnace slag system were studied in the present work. At a fixed CaO/SiO2 ratio of 1.20, 9 mass pct MgO, and 1 mass pct TiO2, the viscosity and surface tension increases, while sulfide capacity decreases with increasing of Al2O3 content. Increasing Al2O3/SiO2 from 0.47 to 0.92 causes a slight decrease in viscosity of the slags and has an opposite effect when Al2O3/SiO2 is more than 0.92. The surface tension and sulfide capacity increases with increasing Al2O3/SiO2 at a fixed CaO content. The isogram of this properties were also obtained using prediction models.