March 2009
Vol. 6, No. 3 - Full Table of Contents
Pre-Show Issue for AISTech 2009 plus Iron Production Technologies
About the Cover |
Train carrying iron ore through the Pilbara in Western Australia, run by Rio Tinto’s Pilbara Iron. Rio Tinto Iron Ore’s operations in the Pilbara produce more than 163 million tonnes of iron ore annually. With a network of 11 mines, three shipping terminals and the largest privately owned heavy freight rail network in Australia, the Pilbara operations make up a major part of Rio Tinto’s global iron ore activities. Photograph courtesy of Rio Tinto. |
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Why It Pays to Be a Leader: AIST 2008 Membership Survey Results
S. Varmecky |
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| 33 |
HIsmelt® Technology:
The Future of Ironmaking
Theodore Leczo, steel industry consultant (tjleczo@hotmail.com)
The unique liquid ironmaking process of HIsmelt® technology produces LD-quality hot metal or pig iron using lower-quality iron ore and non-coking coal, and a variety of iron and carbon-bearing mill wastes, without
blending or agglomeration. A HIsmelt facility can replace an obsolete blast furnace in a brownfield
application or can be the iron-producing component of a greenfield state-of-the-art steelmaking plant. |
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| 50 |
Modeling Coal Combustion Behavior in an Ironmaking Blast Furnace Raceway:
Model Development and Applications
Daniel Maldonado (top left), research engineer, Peter R. Austin (top right) and Paul Zulli (bottom left), BlueScope Steel Research Laboratories, Port Kembla, NSW, Australia (Daniel.maldonado@bluescopesteel.com, peter.austin@bluescopesteel.com, paul.zulli@bluescopesteel.com); and Baoyu Guo (bottom right), School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, Australia (baoyu@materials.unsw.edu.au)
This paper describes the application of a 3-D numerical model to investigate plant-specific blast parameters. The effects of cooling gas type, coal particle size
distribution, longer tuyeres and lance tip geometry are discussed. |
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| 65 |
Severstal NA “C” Blast Furnace 2007 Revamping:
Equipment Design Transforms C BF Into a World-Class Operation
Bruce Edwards, general manager — blast furnace technology, Paul Wurth Ltd., Burlington, Ont., Canada (bruce.edwards@paulwurth.com); Art Cheng (left), manager — technology, iron production, and Stuart Street (right), process specialist – iron producing, Severstal North America Inc., Dearborn, Mich. (acheng@severstalna.com, sstreet@severstal.com); Bill Ebner, vice president — engineering, Paul Wurth Inc., Canonsburg, Pa. (bill.ebner@paulwurth.com); and Lionel Hausemer, project engineer — engineering, Paul Wurth S.A., Luxembourg, Luxembourg (lionel.hausemer@paulwurth.com)
Severstal North America’s “C” blast furnace
underwent a revamping in the fall of 2007. Criteria for decisions on equipment replacement or enhancements are presented and the benefits discussed. |
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Role of an Axial Cyclone in Recycling of Blast Furnace Offgas Cleaning System Solid Wastes
Naiyang Ma (left) and Harold R. Kokal (center), ArcelorMittal Global R&D — East Chicago, Process Research Div., East Chicago, Ind. (naiyang.ma@arcelormittal.com, harold.kokal@arcelormittal.com); and James Flannery (right), ArcelorMittal Indiana Harbor, Environmental Dept., East Chicago, Ind. (james.flannery@arcelormittal.com)
Performance of conventional dust catchers and an axial cyclone in an ArcelorMittal USA blast furnace offgas cleaning systems is assessed. The axial cyclone is shown to be an effective and efficient device for minimizing disposal of blast furnace offgas cleaning system solid wastes. |
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Prediction of Blast Furnace Hearth Inner Profiles
Lijuan Zheng (top left), Rohit Deshpande, and Chenn Q. Zhou (top right), Purdue University Calumet, Department of Mechanical Engineering, Hammond, Ind. (qzhou@calumet.purdue.edu); D. (Frank) Huang (bottom left), ArcelorMittal Global R&D — East Chicago, East Chicago, Ind.; and Pinakin Chaubal (bottom right), director — process research, ArcelorMittal Global R&D, Maizieres-les-Metz, France (pinakin.chaubal@arcelormittal.com)
A 3-D CFD model was developed to predict the inner profile of a blast furnace hearth. The model was
applied to predict the inner profile for the
ArcelorMittal Indiana Harbor No. 7 blast furnace. Results are presented in this paper. |
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| 90 |
Chlorine Behavior of Coal and Waste Plastics During Carbonization
Kenji Kato (top left), Seiji Nomura (top right) and Koichi Fukuda (bottom left), Environment & Process Technology Center, Nippon Steel Corp., Chiba, Japan (katoh.kenji1@nsc.co.jp, nomura.seiji@nsc.co.jp, fukuda.koichi@nsc.co.jp); and Hiroshi Uematsu (bottom right), Technical Administration & Planning Div., Nippon Steel Corp., Tokyo, Japan (uematsu.hiroshi@nsc.co.jp)
Waste plastics include chlorine-containing types, which can cause corrosion problems in the equipment used to recycle the plastics into chemical products such as coke, tar and coke oven gas. This paper discusses chlorine behavior and pre-treatment of waste plastics.
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