Fe-Si droplets associated with graphite on blast furnace coke

作     者：Stanislav S.Gornostayev Timo M.J.Fabritius Olavi Kerkkonen Jouko J.Hrkki 

作者机构：Laboratory of Process MetallurgyUniversity of OuluOulu 90014Finland Ruukki Metals OyRaahe 92102Finland 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2012年第19卷第6期

页      面：478-482页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：financially supported by the Academy of Finland 

主　　题：metallurgical coke graphite iron blast furnaces 

摘      要：Fe-Si droplets on the surface of blast furnace （BF） coke from 25 to 50 cm at the tuyere level are mostly composed of Fe3Si, which has various shapes （round, elongated, and irregular） and penetration degrees into the BF coke matrix. The shapes and penetration degrees may depend on the saturation of molten iron by silicon during interaction with the coke matrix. The droplets are covered by a tiny shell of carbon. Graphite observed inside the droplets can be divided into two categories： well-formed tabular crystals with relatively large size and flakes with structures similar as those in cast iron. The textures of the droplets reflect composition, interaction with the coke matrix, and cooling conditions.