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Metals and Minerals Processing News
News Release from: Linde Gas | Subject: ArcelorMittal Shelby
Edited by the Processingtalk Editorial
Team on 25 February 2008
Minimising energy used at tubular mill
25% more capacity and 50% less fuel consumption thanks to Rebox: Linde technology boosts tube production at ArcelorMittal Shelby
ArcelorMittal Shelby Tubular Products is a North American market leader for seamless and welded tubular products for end user applications in markets such as automotive, oil and gas and construction The company needed to boost their seamless tube mill output for larger billet dimensions while minimising energy and maintenance costs
This article was originally published on Processingtalk on 14 Feb 2007 at 8.00am (UK)
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In the second half of 2007, the Linde Group converted a rotary hearth furnace for billet reheating, on a turnkey basis.
A compressed project timeline of four months from contract signing to commissioning was necessary to meet the objectives and time constraints of this project plan.
The formerly air fuel fired furnace was equipped with a Rebox oxyfuel solution including flameless technology.
The conversion was made in two steps, first using oxygen-enrichment for a short period of time before implementation of the flameless oxyfuel operation.
Excellent results have been achieved, including a 25% increase in reheating capacity and a 50% reduction in fuel consumption, fulfilling the performance guarantees.
Moreover, the temperature uniformity improved, producing better piercing results.
The scale formation was reduced by 50%, and the emission levels of NOX and CO2 were also significantly minimised.
Rebox oxyfuel solutions are employed in over 110 reheating and annealing furnaces worldwide.
The use of oxyfuel will further improve important parameters such as fuel consumption, throughput capacity and emission levels.
Compared to air fuel solutions, oxyfuel can boost production throughput up to 50% as well as reducing fuel consumption and CO2 emission by 50%.
The first installation of this kind took place at Timken in the US in 1990.
ArcelorMittal Shelby Tubular Products is based at Shelby, in Ohio.
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