98/00641 Two-stage process for preparation of pig-iron melt from metalized ore pellets by smelting in electric-arc furnace

1998 ◽  
Vol 39 (1) ◽  
pp. 54 ◽  
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Pig Iron ◽  
Arc Furnace ◽  
Two Stage ◽  
Ore Pellets ◽  
Stage Process

Recycling of Electric Arc Furnace Dust by Adding to Hot Metal

2012 ◽  
Vol 727-728 ◽  
pp. 1740-1745
Author(s):  
Vicente de Paulo Ferreira Marques Sobrinho ◽  
José Roberto de Oliveira ◽  
Victor Bridi Telles ◽  
Felipe Fardin Grillo ◽  
Jorge Alberto Soares Tenório ◽  
...  
Keyword(s):  
Electric Arc Furnace ◽  
Particle Size Analysis ◽  
Electric Arc ◽  
Size Analysis ◽  
Pig Iron ◽  
Arc Furnace ◽  
Hot Metal ◽  
Experimental Conditions ◽  
Electric Arc Furnace Dust ◽  
Fusion Experiments

This research aims to study the process of incorporation of the metal iron contained in electric arc furnace dust (EAFD), by addition in hot metal at a temperature of 1,400 degrees Celsius altering experimental conditions such as how to add the EAFD (“as received” and in the form of briquettes), the percentage of EAFD to be added (10, 20 and 30% of initial weight of sample pig iron). The time of withdrawal of the sample of pig iron and slag (30 minutes after the addition of EAFD). Previously, the EAFD will be characterized using the following techniques: chemical analysis, particle size analysis, X-ray diffraction, scanning electron microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) microanalysis. After characterization, the electric arc furnace dust to be added to the bath of liquid iron, will be divided into 2 types: the first order of addition will be in the form "as received" from the plant and the second is through the agglomeration of EAFD in the form of briquettes. The achievement of fusion experiments in laboratory scale will take place in a vertical tubular furnace with temperature control. The fusion experiments to assess the incorporation of the metal iron will use graphite crucibles. A flow of inert gas (argon) will be maintained inside the furnace during the experiments. It is expected that the results obtained at the end of the research allow the evaluation of the iron metal incorporation of electric arc furnace dust in pig iron bath.

scholarly journals Impact of using metallized iron ore pellets to increase the efficiency of electric arc furnace

2015 ◽  
Vol 15 (3) ◽  
pp. 35-40
Author(s):  
Viktor Stepanov ◽  
Aleksandr Kem ◽  
Eduard Merker ◽  
Lyudmila Kraht--
Keyword(s):  
Iron Ore ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Iron Ore Pellets ◽  
Ore Pellets

The Study of Additive Variation in Smelting Process of Sponge Iron into Pig Iron on the Fe Content and Fe Recovery Using Electric Arc Furnace

2019 ◽  
Vol 964 ◽  
pp. 55-61
Author(s):  
Sungging Pintowantoro ◽  
Fakhreza Abdul ◽  
Imam Prasetyo ◽  
Angga Dharma
Keyword(s):  
Steel Production ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Sponge Iron ◽  
Smelting Process ◽  
Pig Iron ◽  
Arc Furnace ◽  
Production Chain ◽  
Iron Smelting ◽  
Fe Content

Iron sand as the largest form of iron ore reserves in Indonesia has not been optimized properly for domestic iron-steel production. In the production chain of pig iron from iron sand, there is a problem that in sponge iron (result of direct reduction) contains many impurities, especially titanium. This research is conducted to determine the effect of additive variation to the Fe content and Fe recovery during sponge iron smelting process into pig iron using electric arc furnace (EAF). Types of additives variation that used in this research are CaCl2 and CaC2, as well as smelting without additive as comparison. Briquettes made from sponge iron, coal, flux (SiO2), and variations of additive are melted in crucible using EAF (16.2 Volt; 180 Ampere) for 6 minutes. Based on EDX and XRD results of pig iron and slag, the optimum process of sponge iron smelting is use the CaCl2 as additive. It’s shown by the result that the pig iron containing the highest %wt Fe by 90.97% and the highest Fe recovery by 80.41%. The product that used CaC2 as additive has Fe content of 89.31 %wt and Fe recovery during process of 72.36%. Meanwhile, the results obtained from the smelting without additives only shows that the Fe content in pig iron amounted to 88.90 %wt and 68.76% values for Fe Recovery.

Analytical Electron Microscopy Characterization of Electric Arc Furnace Dust

1981 ◽  
Vol 39 ◽  
pp. 134-135
Author(s):  
J. R. Porter ◽  
J. I. Goldstein ◽  
D. B. Williams
Keyword(s):  
Electron Microscopy ◽  
Analytical Electron Microscopy ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Dust Particles ◽  
Particle Analysis ◽  
Arc Furnace ◽  
Analytical Electron ◽  
Residual Elements ◽  
Industry Practice

Alloy scrap metal is increasingly being used in electric arc furnace (EAF) steelmaking and the alloying elements are also found in the resulting dust. A comprehensive characterization program of EAF dust has been undertaken in collaboration with the steel industry and AISI. Samples have been collected from the furnaces of 28 steel companies representing the broad spectrum of industry practice. The program aims to develop an understanding of the mechanisms of formation so that procedures to recover residual elements or recycle the dust can be established. The multi-phase, multi-component dust particles are amenable to individual particle analysis using modern analytical electron microscopy (AEM) methods.Particles are ultrasonically dispersed and subsequently supported on carbon coated formvar films on berylium grids for microscopy. The specimens require careful treatment to prevent agglomeration during preparation which occurs as a result of the combined effects of the fine particle size and particle magnetism. A number of approaches to inhibit agglomeration are currently being evaluated including dispersal in easily sublimable organic solids and size fractioning by centrifugation.

Monitoring the environmental and energy impacts of electric arc furnace steelmaking

2016 ◽  
Vol 104 (1) ◽  
pp. 102 ◽  
Author(s):  
Valentina Colla ◽  
Filippo Cirilli ◽  
Bernd Kleimt ◽  
Inigo Unamuno ◽  
Silvia Tosato ◽  
...  
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace
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