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April
2008
Vol. 5, No. 4
Pre-Show Issue for AISTech 2008 plus Iron Production Technologies
About the Cover
At ArcelorMittal Dofasco Inc., environmental quality and the well-being of community are primary goals. The background building houses ArcelorMittal Dofasco’s steelmaking operations in Hamilton, Ont., Canada.
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108
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Safe Works Program at Worthington Industries Reduces Injuries
Joann Cantrell, editor, Iron & Steel Technology (jcantrell@aist.org)
Worthington Industries, is a known leader in safety management and injury prevention, operating with the belief that safety is everyone’s business. Through Safe Works, employees are developing new work habits and being rewarded for making safety a priority.
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111
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Arc Flash Study: The Six Steps
Timothy J. Lemoine (left) and Ronald G. Studtmann (right), Matrix Technologies Inc., Maumee, Ohio (tjlemoine@matrixti.com, rgstudtmann@matrixti.com)
An arcing fault can release tremendous amounts of concentrated radiant energy, resulting in an immensepressure blast and hurling shrapnel. This paper discusses arc flash analysis, short-circuit analysis, and protective coordination studies for meeting OSHA and NFPA 70E compliance standards.
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118
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PIZO Furnace Demonstration Operation for Processing EAF Dust
James E. Bratina, R&D engineer, and Kim M. Lenti, operations manager, Heritage Technology Group, Indianapolis, Ind. (james.bratina@heritage-enviro.com, kim.lenti@heritage-enviro.com)
The PIZO Process was developed for the upgrading of oxide materials from the metals industry. This paper discusses the operation of a demonstration facility while processing BOF sludge and EAF dust to produce zinc, iron and slag products.
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123
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Zero Liquid Discharge (ZLD) Cooling Tower Treatment at CSI
Dan Duke (pictured), chief financial officer, and John Kubis, chief executive officer, Water & Enviro Tech Co. Inc. (WETCO), Mission Viejo, Calif. (jack@wetco.biz); and Jeff Reed, site maintenance planner, California Steel Industries Inc., Fontana, Calif. (jreed@californiasteel.com)
Two new cooling towers were started up at CSI using zero liquid discharge water chemistry. The most significant benefit of the new technology is that cost savings and performance were not at the expense of water conservation or environmental protection.
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130
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Applications of Automatic Screen Filters in the U.S. Steel Industry
Marcus N. Allhands, Orival Inc., Englewood, N.J. (ma@orival.com)
Automatic self-cleaning screen filters must be well-designed in order to meet the high expectations of their use. This paper will look at a variety of those applications in a number of mills and describe the appropriate use of such filters
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139
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The Use of Steelmaking Slag for Mineralogical Sequestration of Carbon Dioxide — Aqueous Processing
C. Hank Rawlins (left), Simon N. Lekakh (second rom left), Von L. Richards (second from right) and Kent D. Peaslee (right), Missouri University of Science and Technology, Department of Materials Science and Engineering, Rolla, Mo. (chrnr9@mst.edu, lekakhs@umr.edu, vonlr@umr.edu, kpeaslee@mst.edu)
This paper reviews an experimental study using steelmaking slag to sequestrate carbon dioxide while simultaneously accelerating the slag stabilization process. The degree of slag carbonization is reported for slag component minerals and industrial slags under wet and dry conditions.
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