Fundamental Research and Applications of Blast Furnace Slag
Blast furnace slag is formed with ore gangue, coke ash and flux during the smelting process of hot metal production. The viscosities of blast furnace slags, including the primary and the intermediate slags (CaO -SiO2- Al2O3 -FeO -MgO), have been systematically investigated. A BF slag viscosity prediction model was established, which provides important parameters for the BF operation. The viscosity and the relationship between viscosity and crystalline behavior of TiO2-bearing BF slag were also investigated and discussed. The crystallization thermodynamics of TiO2-bearing BF slag has been studied through phase equilibrium calculation and experimental approaches. The crystal growth and slag viscosity of TiO2-bearing BF slag have been experimentally examined and discussed, which provides a theoretical support for the extraction of titanium and comprehensive utilization of the blast furnace slag. On the basis of studying the influence of slag viscosity with its composition, the viscosity of BF slag and its temperature influence can be controlled by suitably adjusting their compositions. The slag fiber fabrication parameters by adding the fly ash to high-temperature molten slag have been achieved. Compared with traditional methods, the heat energy and resources of the slag can be well utilized with this method. This method will provide a new field to fully utilize the energy and resources of BF slag.
Blast furnace slag viscosity prediction model Ti-bearing slag slag fiber
Xidong WANG Dawei ZHAO Rong WANG Liming HOU Junlin LIAO
College of Engineering, Peking University, Beijing 100871, P.R. China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-11
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）