The relationship between basicity and swelling on reduction of iron-ore pellets

Frazer, F.W.; Westenberger, Hugo; Boss, K.H.; Thumm, W.

doi:10.1016/0301-7516(75)90028-9

Cited by 41 publications

(24 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20) So RSI of pellet decreases with the increase of TiO 2 . In addition, pellets having more amount of liquid phase generally have higher RSI, similar observations are made by Frazer et al 21) From Fig. 7, it is evident that the liquids appears to decrease as TiO 2 increased, which also demonstrates that RSI is improved by TiO 2 .…”

Section: Effect Of Tiosupporting

confidence: 83%

Coupled Effect of Valuable Components in High-Chromium Vanadium-bearing Titanomagnetite during Oxidization Roasting

et al. 2016

View full text Add to dashboard Cite

Section: Effect Of Tiosupporting

confidence: 83%

Coupled Effect of Valuable Components in High-Chromium Vanadium-bearing Titanomagnetite during Oxidization Roasting

et al. 2016

View full text Add to dashboard Cite

“…Reduction swelling of iron oxide pellets or compacts has been studied by a number of investigators 1–26. The formation and growth of fibrous iron whiskers during the reduction of wustite to iron has been determined to be the major cause for catastrophic swelling.…”

Section: Introductionmentioning

confidence: 99%

Effects of Reducing Gas on Swelling and Iron Whisker Formation during the Reduction of Iron Oxide Compact

Wang

Sohn

2012

steel research int.

View full text Add to dashboard Cite

The effects of different types of reducing gas on swelling and iron whisker formation during the reduction of iron oxide compacts were investigated. The compacts sintered in air at 1273 K were reduced at 1173 K in different reducing atmospheres. The results indicated that catastrophic swelling can happen in CO but not when H 2 is present in the reducing gas mixture. Scanning electron microscope (SEM) micrographs showed that catastrophic swelling was caused by a large amount of long iron whiskers formed during the reduction. The presence of N 2 and CO 2 in CO changed the amount of long iron whiskers and its distribution, which determined the extent of swelling.

show abstract

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Sharma et al 17) observed that the swelling index increased with an increase in the porosity of the pellets fired at various temperatures and for different times. The pellets were fired in the temperature range of 1 000-1 350°C and soaked for different time intervals ranging from 10 to 80 min.…”

Section: Introductionmentioning

confidence: 99%

Effects of Firing and Reduction Conditions on Swelling and Iron Whisker Formation during the Reduction of Iron Oxide Compact

Wang

Sohn

2011

ISIJ International

View full text Add to dashboard Cite

The effects of firing and reduction conditions on swelling and iron whisker growth were investigated. The iron oxide compacts sintered in air were reduced in the tubular high temperature reactor by carbon monoxide or hydrogen. The experimental results showed that catastrophic swelling was suppresed by increasing the firing temperature or the firing time at moderate firing temperatures. The severest swelling happened in the reduction temperature of 900-1 000°C with carbon monoxide. No catastrophic swelling was observed when hydrogen was used as the reducing gas. The SEM micrographs showed that catastrophic swelling was caused by a large amount of long whiskers formed during the reduction. The number of nucleation sites of whisker growth was limited when the firing temperature was increased above 1 000°C, which also suppressed catastrophic swelling. On the basis of exprimental data and SEM results, a conceptual diagram was formulated to describe the effects of firing and reduction conditions on iron whisker growth and swelling.

show abstract

The relationship between basicity and swelling on reduction of iron-ore pellets

Cited by 41 publications

References 1 publication

Coupled Effect of Valuable Components in High-Chromium Vanadium-bearing Titanomagnetite during Oxidization Roasting

Coupled Effect of Valuable Components in High-Chromium Vanadium-bearing Titanomagnetite during Oxidization Roasting

Effects of Reducing Gas on Swelling and Iron Whisker Formation during the Reduction of Iron Oxide Compact

Effects of Firing and Reduction Conditions on Swelling and Iron Whisker Formation during the Reduction of Iron Oxide Compact

Contact Info

Product

Resources

About