Swelling Behavior of High-Chromium, Vanadium-Bearing Titanomagnetite Pellets in H2-CO-CO2 Gas Mixtures

被引：21

作者：

Li, F. ^{[1
]}

Chu, M. S. ^{[1
]}

Tang, J. ^{[1
]}

Liu, Z. G. ^{[1
]}

Feng, C. ^{[1
]}

Tang, Y. T. ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China

来源：

JOM | 2017年 / 69卷 / 10期

基金：

中国国家自然科学基金;

关键词：

CEMENT-BONDED BRIQUETTES; IRON-ORE PELLETS; REDUCTION CONDITIONS; HEMATITE PELLETS; OXIDE;

D O I：

10.1007/s11837-017-2401-z

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

In this study, the effects of temperature, gas composition and reduction degree on the reduction swelling index (RSI) of high-chromium vanadium-bearing titanomagnetite (HCVT) pellets during reduction with H-2-CO-CO2 gas mixtures are investigated. The results show that the formation of massive wustite causes most of the volume expansion of the pellets. The swelling of HCVT pellets is intensified with the temperature and content of CO, and the RSI reaches a maximum at the reduction degree of 35-50%. In H-2/CO = 5/2 (volume ratio) with a temperature range from 1223 K to 1373 K, the maximum RSI increases from 14.68% to 22.54%. Nevertheless, when the ratio of H-2/CO increases from 2/5 to 5/2 at 1223 K, the maximum RSI of the pellets decreases from 21.25% to 19.55%. Meanwhile, the shrinking rate of the pellets also decreases from 33.20% to 27.26%.

引用

页码：1751 / 1758

页数：8

共 24 条

[1]

Metalizing reduction and magnetic separation of vanadium titano-magnetite based on hot briquetting [J].