FLUIDIZED-BED REDUCTION OF IRON-ORE FINES BY COAL FINES

被引：12
作者：
HAQUE, R
RAY, HS
MUKHERJEE, A
机构：
[1] REG RES LAB,BHUBANESWAR 751013,ORISSA,INDIA
[2] INDIAN INST TECHNOL,DEPT MET ENGN,KHARAGPUR 721302,W BENGAL,INDIA
来源：
ISIJ INTERNATIONAL | 1991年 / 31卷 / 11期
关键词：
REDUCTION; IRON ORE; COAL; AIR; TIME; TEMPERATURE; FLUIDIZED BED;
D O I：
10.2355/isijinternational.31.1279
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Reduction of iron ore fines by coal fines in a bed fluidized by air has been studied, The investigation includes study of the kinetic aspect of reduction and effect of major process variables. The variables used are time, temperature, coal/ore ratio and air flow rate. The kinetic data of reduction fit the first order reaction model. Within the range of variables studied, an increase in reaction temperature and coal/ore ratio of the reduction mixture result in higher reduction rate, whereas, increase in air flow rate adversely affects the reduction rate. The activation energy for the reduction reaction is found to be about 1 55 kJ/mol.
引用
收藏
页码：1279 / 1285
页数：7
相关论文
共 20 条
[1]  
CHERNYSHEV AM, 1977, STEEL USSR, V7, P133
[2]  
COLLIN PH, 1980, IRON STEEL ENG MAR, P43
[3]   FLUIDIZED-BED ROASTING OF MOLYBDENITE-EFFECT OF OPERATING VARIABLES [J].
DOHEIM, MA ;
ABDELWAHAB, MZ ;
RASSOUL, SA .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1976, 7 (03) :477-483
[4]   THE REDUCTION OF HEMATITE TO WUSTITE IN A LABORATORY FLUIDIZED-BED [J].
DOHERTY, RD ;
HUTCHINGS, KM ;
SMITH, JD ;
YORUK, S .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1985, 16 (03) :425-432
[5]  
EZZ SY, 1960, T AM I MIN MET ENG, V218, P709
[6]  
GHOSH D, 1986, T IRON STEEL I JPN, V26, P186
[7]  
GONZALES OGD, 1987, IRONMAK STEELMAK, V14, P217
[8]  
HAQUE R, 1989, 7TH P NAT S THERM AN, P62
[9]   DEVELOPMENT OF COAL GASIFICATION-IRON ORE REDUCTION PROCESS BY FLUIDIZED-BED [J].
HORIE, T ;
SHIMIZU, M .
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1987, 73 (07) :796-803
[10]  
HUTCHINGS KM, 1987, IRONMAK STEELMAK, V14, P103
12