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Improved environmental and labor conditions at the Cherepovets plant
Siemens delivers new secondary dedusting system for converter steelmaking plant of Severstal
The Cherepovets combine located in the Vologda Region forms part of the "Severstal Russian Steel" division of OAO Severstal. It is one of the largest integrated steel plants in the world and produced a total of 11.1 million tons of steel in 2010. The converter steelmaking plant at the Cherepovets location is equipped with three 350-ton converters. In 2010, the converter plant alone produced 9.3 million tons of steel. As a consequence, the dust emission levels are also very high. The new secondary dedusting system is part of an environmental program at Severstal. The company intends to invest three billion rubles (roughly 75 million euros) in the dedusting plant. Severstal will carry out civil works and installation and set up the necessary auxiliary facilities. The dedusting plant will collect and clean the dust emitted during the charging of scrap and hot metal. This will limit the dust load in offgases through the stack to a maximum of 10 mg/Nm3, thus achieving levels in the top ranks worldwide.
Siemens delivered the core components of the secondary dedusting system, including a static offgas cooler, a bag filter and the induced-draft fans. Siemens is also responsible for the entire design, including electro-technical equipment and automation technologies. The heart of the equipment is the patented heat absorption cooler developed by Siemens. Temperature peaks can occur in the offgas as a result of the high content of combustible non-metallic impurities in the charged scrap. This in turn can lead to damage to the filter bags. The heat absorption cooler avoids high offgas temperatures and protects filter bags from damage.
Severstal is already the second steelmaker in Russia to have a secondary dedusting system installed by Siemens VAI in an existing steelworks. These installations make Siemens the market leader in Russia in this technological area.
Further information about solutions for steel works, rolling mills and processing lines is available at http://www.siemens.com/metals
The Metals Technologies Business Unit (Linz, Austria), part of the Siemens Industry Sector, is one of the world's leading suppliers of plant construction and engineering in the iron and steel industry as well as in the flat rolling segment of the aluminum industry. The Business Unit offers a comprehensive product and service portfolio for metallurgical plants and equipment as well as integrated automation and environmental solutions covering the entire lifecycle of plants. For more information, visit www.siemens.com/metals
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