Siemens VAI to Install Dedusting for New Novolipetsk LD Converter
12/12/2008 - Siemens VAI Metals Technologies will install dedusting systems and auxiliary equipment for a new LD converter in NLMK’s Steel Works No. 2.
Russian steel producer OJSC Novolipetsk Steel (NLMK) has contracted Siemens VAI Metals Technologies for the installation of dedusting systems and auxiliary equipment for a new LD (BOF) converter in Steel Works No. 2. The order value for Siemens is a two-digit-million euro figure.
Installation of the dedusting facilities is part of an extensive campaign currently underway at Novolipetsk Steel to considerably reduce emissions from their two oxygen steelmaking works and thus improve overall air quality in Lipetsk.
Novolipetsk Steel is installing a third 325-tonne converter in the LD Steelmaking Plant No. 2, which will increase the annual steel capacity in this mill from its current level of 5.5 million tonnes to approximately 7.6 million tonnes. Siemens VAI will provide the engineering and supply of main equipment for the dedusting and alloying systems for the new converter. Siemens VAI will also provide various components, equipment and automation packages for the converter itself.
The new dedusting facilities will include a Baumco wet-type scrubber for the primary-dedusting system. The scope of supply for the secondary dedusting system comprises the excess-heat-absorber, raw-gas collection ducts, spark arrestor, pulse-jet-type filter baghouse and radial ID (induced-draft) fans. The dedusting system will exhaust emissions from the immediate vicinity of the converter, particularly during charging and tapping, and also from the canopy hood. It will reduce the dust content in the gas exiting the primary- and secondary-dedusting systems to contractually specified values in accordance with local environmental regulations.
Siemens VAI will also supply and install material-handling and transport equipment, including the related dedusting system.
For the converter installation itself, Siemens VAI will provide VAI-CON slag stoppers, a bottom-stirring system to improve steel homogeneity, different valve stands for the O2 lances, a wrecking machine for removing worn refractories, and probe manipulators for the temperature measurement and sampling equipment. Siemens will also install Dynacon Level 2 process optimization, which will use converter offgas analyses to conduct end-blow calculations for achieving the targeted decarburization level in the steel bath. The process model will also calculate the decarburization rate, chemical composition of the steel and slag, and the temperature of the liquid steel, thus facilitating the achievement of significantly shorter tap-to-tap times.
Siemens VAI will also provide all of the associated electrical and automation systems, as well as advisory services for installation, start-up and commissioning, plus spare parts. Start-up of the 325-tonne-capacity converter is tentatively scheduled for 2011.
This project follows Siemens VAI’s successful installation of new and modernization of existing continuous slab-casting machines for Novolipetsk Steel. Siemens VAI is currently modernizing the primary- and secondary-dedusting systems of three 160-tonne-capacity converters in the LD Steelmaking Plant No. 1.
Novolipetsk Steel (NLMK), one of the world’s leading steel companies, operates its main steelmaking and rolling facility in Lipetsk, Russia, approximately 500 km south of Moscow. In their two LD steelmaking plants, the company produced over nine million tonnes of crude steel in 2007, comprising a wide range of carbon and alloy steels. These are sold as slabs, coils (including galvanized and color-coated coils) and sheets, in some 80 countries. The company is also one of the world's leading suppliers of electrical steel grades with a 20% share of the global grain-oriented steel market. The main customers are from the construction, automotive, electrical engineering, shipbuilding and household-appliance industries.
The Siemens Industry Sector (Erlangen, Germany) is a leading international supplier of production, transportation, building and lighting technologies. The Sector consists of six Divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 222,000 employees worldwide, Siemens Industry posted a profit of EUR3.86 billion with revenues totaling EUR38 billion.
With the business activities of Siemens VAI Metal Technologies, (Linz, Austria), Siemens Water Technologies (Warrendale, Pa.), and Industry Technologies (Erlangen, Germany), the Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities. Using its own products, systems and process technologies, Industry Solutions develops and builds plants for end customers, commissions them and provides support during their entire life cycle. With around 31,000 employees worldwide Siemens Industry Solutions achieved an order intake of EUR 8.4 billon in fiscal year 2008 (preliminary and unaudited).
