scholarly journals A Comprehensive Static Model of an Iron Bath Smelting Reduction Process with Thick Slag for Alumina-Rich Iron Ore

2015 ◽  
Vol 55 (10) ◽  
pp. 2125-2134 ◽  
Author(s):  
Yibo He ◽  
Biao Tang ◽  
Qiang Li ◽  
Zongshu Zou
Keyword(s):  
Iron Ore ◽  
Reduction Process ◽  
Static Model ◽  
Smelting Reduction ◽  
Bath Smelting ◽  
Iron Bath

scholarly journals Interaction mechanism between refractory and melts in iron bath smelting reduction process

2010 ◽  
Vol 46 (2) ◽  
pp. 131-140
Author(s):  
G.B. Qiu ◽  
Y. Xu
Keyword(s):  
Corrosion Rate ◽  
Molten Slag ◽  
Interaction Mechanism ◽  
Reduction Process ◽  
Immersion Test ◽  
Corrosion Mechanism ◽  
Smelting Reduction ◽  
Zirconia Refractory ◽  
Bath Smelting ◽  
Iron Bath

The corrosion behavior of three sorts of refractories based on alumina-graphite were studied by immersion tests. The melts included smelting reduction molten slag and corresponding carbon saturated molten iron. The influence of test temperature, FeO content in slag and specimen rotative velocity on the corrosion rate of refractories was examined. By means of SEM and EDS, the microstructure change of the refractories after immersion test in kinds of melts was studied. The morphology of the deteriorated layer showed the corrosion extent of refractories. With the addition of zirconia and titania into the refractories, the corrosion rate changed to some extent. The corrosion rate of three sorts of refractories increased dramatically with the increasing FeO content in smelting reduction slag. Compared with alumina-graphite refractory and alumina-graphite-zirconia refractory, alumina-graphite-titania refractory had stronger corrosion resistance in the smelting reduction conditions. By the results of SEM and EDS, the corrosion mechanism of refractories was developed.

scholarly journals Energy consumption in smelting reduction (SR) processes

2010 ◽  
Vol 63 (2) ◽  
pp. 265-270
Author(s):  
Paulo Santos Assis ◽  
Jue Fang ◽  
Tilak R. Mankhand ◽  
Carlos Frederico Campos de Assis ◽  
Giovanni Felice Salierno
Keyword(s):  
Alternative Fuels ◽  
Iron Ore ◽  
Calorific Value ◽  
Production Costs ◽  
Smelting Process ◽  
Smelting Reduction ◽  
Coal Consumption ◽  
Gas Utilization ◽  
Utilization Ratio ◽  
Iron Bath

In contrast, conventional processes use coke and hematite/sinter in the blast furnace, in SR processes, other alternative fuels and iron ore sources, like charcoal and fine iron ores, can be used to produce sponge iron. The use of these alternative sources, by SR processes, can reduce environmental impacts and lower production costs. At first, the concepts of the theoretical gas utilization ratio, the smelting heat of the iron ore and the effective calorific value of coal were introduced. Then, the reason for gas utilization ratio and its performance in the shaft as a reducer in the smelting process are discussed and calculated. The relationship between coal consumption and iron ore reduction in the fluidized bed are also discussed. Finally, the influence of post-combustion on coal consumption in an iron bath furnace are calculated and discussed.

Experimental Investigation on Reduction Kinetics of Stainless Steel-Making Slag in Iron Bath Smelting Reduction

2013 ◽  
Vol 721 ◽  
pp. 164-168
Author(s):  
Bo Zhang ◽  
Shuai Niu ◽  
Wen Bin Chen ◽  
Wen Cai Li ◽  
Fa Tao Chen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Reaction Rate ◽  
Steel Slag ◽  
Interface Reaction ◽  
Reduction Kinetics ◽  
Smelting Reduction ◽  
Stainless Steel Slag ◽  
Bath Smelting ◽  
Iron Bath ◽  
Kinetics Of

Reduction kinetics of stainless steel slag in iron bath smelting reduction was studied at the temperature of 1500°C ~ 1650°C. It was concluded that the reduction process consisted of two parts. That is to say smelting reduction was controlled by stainless steel slag melting initially and by interface reaction later. In order to increase smelting reaction rate, the melting point of slag should be decreased at the first stage and adjust the liquidity of slag at later stage. Smelting reaction rate will be accelerated by means of optimize the slag content. The optimal reduction result that all most all of the chromium in slag been recovered was obtained in temperature was 1500°C, basicity of slag was 1.0~1.2, the value of Al2O3+MgO was 25%.

Heat transfer in an iron bath of a two-stage smelting reduction process

1993 ◽  
Vol 64 (8-9) ◽  
pp. 372-376 ◽  
Author(s):  
Heinrich Wilhelm Gudenau ◽  
Tianjun Yang ◽  
Thomas Germershausen ◽  
Heinz Rosenbaum ◽  
Keng Wu
Keyword(s):  
Heat Transfer ◽  
Reduction Process ◽  
Smelting Reduction ◽  
Two Stage ◽  
Iron Bath

scholarly journals Raceway Smelting Reduction Process with Fine Iron Ore Injection from Blast Furnace Tuyeres

1993 ◽  
Vol 79 (10) ◽  
pp. 1151-1156 ◽  
Author(s):  
Kentarou NOZAWA ◽  
Koichiro SHIBATA ◽  
Masakata SHIMIZU ◽  
Heinrich Wilhelm GUDENAU
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Reduction Process ◽  
Smelting Reduction ◽  
Fine Iron
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