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2010 February Issue
Vol. 7, No. 2 - Full Table of Contents
Electric Steelmaking Technologies
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About the Cover
Tenova recently celebrated the 20th anniversary of Consteel®, the continuous charging system for electric arc furnaces, at a two-day international event in Milan, Italy. Guests visited Acciaierie Arvedi, site of the world’s largest Consteel plant in operation, and had the opportunity to see an EAF using Consteel technology and Arvedi’s cutting-edge casting and rolling lines. Consteel was developed through the vision of John A. Vallomy at the end of the 1980s and is now used all over the world.
Photo courtesy of Tenova.
Full magazine available in the Members Only Area |
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Technical Features Table of Contents |
| 29 |
Performance of the New VLB System at CMC Steel South Carolina
Andrew Oseman (left) and Jonathan Ridgeway (right), CMC Steel South Carolina, Cayce, S.C. (andrew.oseman@cmc.com, jonathan.ridgeway@cmc.com)
This paper examines the new Virtual Lance Burner (VLB) system installed at CMC Steel South Carolina and the positive results achieved. |
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| 38 |
Opportunities and Technologies for Energy Recovery in Minimills
Jeremy A.T. Jones, WorleyParsons GC, Irving, Texas (jeremy.jones@worleyparsons.com)
Energy recovery can provide such benefits as cost savings and reduced emissions. This paper attempts to quantify typical energy losses in conventional steelmaking operations, and technologies that might be implemented in the future for energy recovery. |
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47 |
TELEMASTER: On-Line Preventive Maintenance System for Water-Cooled Cables
Alessio Arioli, chief executive officer, BRAR Elettromeccanica, Pegognaga, Italy (alessio.arioli@brar.it)
This paper describes the new on-line preventive maintenance system, TELEMASTER, for water-cooled cables that use Hall Effect sensors. The differential systems presented here are sensitive and operate instantaneously, leading to improvements in fault detection and security against misoperation. |
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56 |
Reduction of N2 Pickup and Increase of Metallic Yield Using the Consteel® EAF Practice
Francesco Memoli (top left), vice president, Tenova Core, Coraopolis, Pa. (fmemoli@corefurnace.com); Marta Guzzon (top right), process development engineer, and Cesare Giavani (bottom left), process development manager, Tenova Melt Shops, Tenova SpA, Milano, Italy (marta.guzzon@it.tenovagroup.com, cesare.giavani@it.tenovagroup.com); Maurizio Zanforlin (bottom right), steel plant manager, O.R.I. Martin SpA; Brescia, Italy (maurizio.zanforlin@orimartin.it); and Paolo Galbiati, steelmaking regional industrial process specialist, TenarisDalmine SpA, Dalmine, Italy (pgalbiati@tenaris.com)
This paper analyzes the reduction of nitrogen pickup that can be achieved through the standard melting practice of the Consteel® EAF, which involves continuous scrap feeding and foamy slag during the whole power-on time. |
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| 63 |
Mitigating CO2 Emissions in the Steel Industry: A Regional Approach to a Global Need
Michael F. Riley (left), senior development consultant — metals processing technology, Praxair Inc., Indianapolis, Ind. (mike_riley@praxair.com); Lee Rosen (center), senior manager — oxygen transport membrane commercial development, and Ray Drnevich (right), corporate fellow — hydrogen and energy technology, Praxair Inc., Tonawanda, N.Y. (lee_rosen@praxair.com, ray_drnevich@praxair.com)
This paper reviews the distribution of ironmaking and steelmaking tonnage and the associated profile of CO2 emissions among different process routes in various regions. Industrial results are presented that can mitigate short-term emissions in each region. |
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| 74 |
EAF Foamy Slag in Stainless Steel Production: A New and Extremely Efficient Technology, Easy to Handle and Cost-Efficient
Jan Reichel (left), senior specialist — BOF and secondary metallurgy, and Lutz Rose (right), project director — Steelmaking/Continuous Casting Div., SMS Siemag AG, Düsseldorf, Germany (jan.reichel@sms-siemag.com, lutz.rose@sms-demag.de)
A new, patented technology for stainless steel production decreases refractory and electrode consumption and noise level, and results in longer electric arcs and a higher temperature gradient. Lower production costs are achieved, along with improved operating conditions. |
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