Design of Waste Heat Boilers for the Recovery of Energy from Arc Furnace Waste Gases

1983 ◽  
pp. 131-141
Author(s):  
S. Bramfoot ◽  
J. Dixon ◽  
J. R. Martin ◽  
A. D. Robertson
Keyword(s):  
Waste Heat ◽  
Arc Furnace

Dynamic simulation of an electric arc furnace waste heat recovery system for steam production

2018 ◽  
Vol 135 ◽  
pp. 188-196 ◽  
Author(s):  
Thomas Keplinger ◽  
Markus Haider ◽  
Thomas Steinparzer ◽  
Andreas Patrejko ◽  
Paul Trunner ◽  
...  
Keyword(s):  
Dynamic Simulation ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Electric Arc ◽  
Arc Furnace ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Steam Production

Discussion of Carbon Emissions for Charging Hot Metal in EAF Steelmaking Process

2017 ◽  
Vol 36 (6) ◽  
pp. 615-621 ◽  
Author(s):  
Ling-zhi Yang ◽  
Tao Jiang ◽  
Guang-hui Li ◽  
Yu-feng Guo
Keyword(s):  
Carbon Emissions ◽  
Waste Heat ◽  
Gas Production ◽  
Arc Furnace ◽  
Hot Metal ◽  
Unit Process ◽  
Coal Gas ◽  
Heat Utilization ◽  
Metal Ratio ◽  
Waste Heat Utilization

AbstractAs the cost of hot metal is reduced for iron ore prices are falling in the international market, more and more electric arc furnace (EAF) steelmaking enterprises use partial hot metal instead of scrap as raw materials to reduce costs and the power consumption. In this paper, carbon emissions based on 1,000 kg molten steel by charging hot metal in EAF steelmaking is studied. Based on the analysis of material and energy balance calculation in EAF, the results show that 146.9, 142.2, 137.0, and 130.8 kg/t of carbon emissions are produced at a hot metal ratio of 0 %, 30 %, 50 %, and 70 %, while 143.4, 98.5, 65.81, and 31.5 kg/t of carbon emissions are produced at a hot metal ratio of 0 %, 30 %, 50 %, and 70 % by using gas waste heat utilization (coal gas production) for EAF steelmaking unit process. However, carbon emissions are increased by charging hot metal for the whole blast furnace–electric arc furnace (BF–EAF) steelmaking process. In the condition that the hot metal produced by BF is surplus, as carbon monoxide in gas increased by charging hot metal, the way of coal gas production can be used for waste heat utilization, which reduces carbon emissions in EAF steelmaking unit process.

scholarly journals Case Study of an Organic Rankine Cycle (ORC) for Waste Heat Recovery from an Electric Arc Furnace (EAF)

Energies ◽  
2017 ◽  
Vol 10 (5) ◽  
pp. 649 ◽  
Author(s):  
Steven Lecompte ◽  
Oyeniyi Oyewunmi ◽  
Christos Markides ◽  
Marija Lazova ◽  
Alihan Kaya ◽  
...  
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace

Development of a thermal oil operated waste heat exchanger within the off-gas of an electric arc furnace at steel mills

2014 ◽  
Vol 66 (1-2) ◽  
pp. 335-345 ◽  
Author(s):  
Christian Brandt ◽  
Nils Schüler ◽  
Matthias Gaderer ◽  
Jens M. Kuckelkorn
Keyword(s):  
Heat Exchanger ◽  
Waste Heat ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Steel Mills ◽  
Thermal Oil

scholarly journals Numerical modelling of heat flows in the upper blast furnace of the electric arc furnace

2018 ◽  
Vol 157 ◽  
pp. 02025
Author(s):  
Richard Lenhard ◽  
Milan Malcho ◽  
Peter Ďurčanský ◽  
Katarina Kaduchová
Keyword(s):  
Waste Heat ◽  
Heating System ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Program Code ◽  
Ansys Fluent ◽  
Heat Flows ◽  
Central Heating ◽  
Volume Method

Contributing shows one of the alternatives to use the waste heat from an electric furnace hat with subsequent use for the need for heating water preparation and central heating. In a contribution is presents a numerical model of heat flows from electric arc furnace designed for, into a cooled furnace from which waste heat is led to the central heating system. The model was developed implementing the finite volume method in ANSYS-Fluent program code.

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.

Long-period modulated superstructures in Pd-12.5 at.%Ce and Pd-15 at.%Ce alloys

1990 ◽  
Vol 48 (4) ◽  
pp. 164-165
Author(s):  
Noriyuki Kuwano ◽  
Masaru Itakura ◽  
Kensuke Oki
Keyword(s):  
Electron Microscopy ◽  
Mean Value ◽  
Heavy Elements ◽  
Arc Furnace ◽  
X Ray ◽  
Long Period ◽  
Ultra High Purity ◽  
Heat Treated ◽  
Atomic Scattering ◽  
The Mean

Pd-Ce alloys exhibit various anomalies in physical properties due to mixed valences of Ce, and the anomalies are thought to be strongly related with the crystal structures. Since Pd and Ce are both heavy elements, relative magnitudes of (fcc-fpd) are so small compared with <f> that superlattice reflections, even if any, sometimes cannot be detected in conventional x-ray powder patterns, where fee and fpd are atomic scattering factors of Ce and Pd, and <f> the mean value in the crystal. However, superlattices in Pd-Ce alloys can be analyzed by electron microscopy, thanks to the high detectability of electron diffraction. In this work, we investigated modulated superstructures in alloys with 12.5 and 15.0 at.%Ce.Ingots of Pd-Ce alloys were prepared in an arc furnace under atmosphere of ultra high purity argon. The disc specimens cut out from the ingots were heat-treated in vacuum and electrothinned to electron transparency by a jet method.

Power from Waste Heat

1913 ◽  
Vol 76 (1968supp) ◽  
pp. 180-180
Keyword(s):  
Waste Heat
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