Evaluation of reducibility of iron ore fines by reduction tests under fluidized bed conditions and petrographical investigations
Direct reduction or smelting reduction technologies as an alternative to the traditional blast furnace process have been developed in recent years which can use iron ore fines directly without prior benefication processes.In order to investigate the reducibility behavior and morphology,iron oxide phases as well as globally traded iron ore fines were tested under various process conditions.Tests were performed in a lab scale fluidized bed reactor and petrographical characteristics could be investigated for the raw ore and reduced samples during and at after the tests.The influence of residence time,start temperature and gas composition for a 3stage operation of a fluidized bed reactor system on the reducibility of hematite ore was studied.Furthermore,the reduction behavior of three different iron ore minerals and the morphological characteristics of the reduced samples are shown.
fluidized bed fine iron ore direct reduction ironmaking reducibility morphology petrography
SKORIANZ Michael MALI Heinrich SCHENK Johannes PLAUL Friedemann WEISS Bernd HANEL Martina
Department/Chair of Metallurgy,Montanuniversitaet Leoben,Franz-Josef-Stra(B)e 18,8700 Leoben,Austria Department of Geological Sciences,Montanuniversitaet Leoben;Peter-Tunner-Stra(B)e 5,8700 Leoben,Aust Siemens VAI Metals Technologies GmbH,Turmstrasse 44,P.O.Box 4,4031 Linz,Austria
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-8
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）