Reduction Behavior of Carbon Composite Pellets Including Alumina and Silica at 1 273 K and 1 373 K

被引：25
|
作者：
Park, Hyunsik [1 ]
Sahajwalla, Veena [1 ]
机构：
[1] Univ New S Wales, Sch Mat Sci & Engn, Ctr Sustainable Mat Res & Technol SMaRT, Sydney, NSW 2052, Australia
来源：
ISIJ INTERNATIONAL | 2014年 / 54卷 / 06期
关键词：
iron making; carbon composite pellet; reduction behavior; Boudouard reaction; alumina and silica; DIRECT-CONTACT CARBURIZATION; IRON MELTING PROCESS; FURNACE TYPE SLAGS; MOLTEN SLAG; VISCOSITY; KINETICS; OXIDE; BRIQUETTES; GRAPHITE; SYSTEM;
D O I：
10.2355/isijinternational.54.1256
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of alumina and silica on the reaction behavior of carbon composite pellet was investigated by thermogravimetric analysis at 1 273 K (1000 degrees C) and 1 373 K (1100 degrees C). X-ray diffraction was used for the phase analysis of iron oxide changing from hematite to reduced iron. The overall reaction was divided into three stages according to phase transformation of iron oxide. CO and CO2 from off-gas data was used for kinetic analysis and for understanding reaction mechanism. The Boudouard reaction was largely influenced by alumina and silica that changed CO gas concentration resulting in different reduction behavior of the pellets. Alumina increased the reaction rate of carbon composite pellet while silica decreased the overall reaction rate.
引用
收藏
页码：1256 / 1265
页数：10
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