The project includes the engineering and the supply of key components, equipment and systems for two LD (BOF) converters, a twin-station RH degassing plant and two ladle-treatment stations. The new plant, scheduled for completion in the first quarter of 2010, will be capable of producing 4.65 million tons of carbon-, alloyed- and special-steel grades per year, 1.3 million tons of which will be cast in an ultra-thick-2-strand-slab caster which Siemens VAI is currently supplying.
The slabs will be subsequently rolled to plates for use in, for example, the shipbuilding industry as well as for the construction of pipelines Posco, one of the largest steel manufacturers in the world, produced more than 30 million tons of steel in 2007. In response to the continually growing local and international demand for steel, Posco commissioned Posco E&C to install a new steel mill adjacent to its existing steel works in Pohang. Siemens Metals Technologies will provide engineering and key equipment and systems for two 300-ton-nominal-capacity LD (BOF) converters, including the offgas-treatment systems, a twin-station RH (Ruhrstahl-Heraeus) degassing plant – each station will be capable of degassing up to 345 tons of steel per treatment cycle – two ladle furnaces with the same capacity in addition to auxiliary facilities and systems.
Both converters will be equipped with the maintenance-free VAI-Con Link suspension system, a converter-tilting unit with drive, and a dry-type converter-offgas-treatment system which will cool and dedust up to 200,000 m3 of offgas per hour. Additionally, an evaporation cooler, a Siemens VAI four-field, round-type ESP (electrostatic precipitator), an ID (induced draught) fan and a gas-switchover station – for directing the treated converter offgas to either the flare or to intermediate storage in a gasholder for subsequent heating applications or for the generation of electricity – will be supplied. The offgas-treatment plant features a unique plate-type cooling system which ensures a high cooling efficiency of the exhausted air by the secondary dedusting system during converter charging.
This project represents the continuation of the successful cooperation between Posco and Siemens VAI. This is now the fifth converter project since 2000 that the two companies will be jointly implementing in the steelmaking sector.Additional information on solutions for steel works, rolling mills and processing lines is available at http://www.siemens.com/metals.
VAI-Con is a registered trademark of Siemens AG in certain countries.
The Siemens Industry Sector (Erlangen, Germany) is the world's leading supplier of production, transportation and building systems. Integrated hardware and software technologies combined with comprehensive industry-specific solutions enable Siemens to enhance the productivity and efficiency of its customers in industry and infrastructure. The Sector comprises six Divisions: Building Technologies, Industry Automation, Industry Solutions, Mobility, Drive Technologies and Osram. In fiscal 2007 (ended September 30), Siemens Industry generated sales of approximately EUR40 billion (pro forma, unconsolidated) with around 209,000 employees worldwide.
With the business activities of Siemens VAI Metal Technologies, (Linz, Austria), Siemens Water Technologies (Warrendale, Pa., U.S.A.), 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.Siemens AG
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