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Siemens Receives Final Acceptance Certificate from Dragon Steel

12/21/2010 - Siemens VAI Metals Technologies GmbH received the Final Acceptance Certificate from Dragon Steel Corp. following the successful start-up and fulfillment of the guarantee performance figures of Sinter Plant No. 1.

Siemens VAI Metals Technologies GmbH received the Final Acceptance Certificate from Dragon Steel Corp. following the successful start-up and fulfillment of the guarantee performance figures of Sinter Plant No. 1.
 
At Dragon Steel, located in the harbor of Taichung in Taiwan, Phase 1 of a new greenfield integrated iron and steel works was recently completed. This industrial complex, for which Siemens VAI designed and supplied a new sinter plant, a blast furnace with an inner volume exceeding 3200 m3 and a two-strand slab caster, is capable of producing 5.2 million tonnes of high-quality slabs per year.
 
The sinter plant, which has a surface area of 248 m2, produces more than 7,440 tonnes (nominal capacity) of sinter per day, or more than 2.4 million tonnes of sinter per year.
 
The Intensive Mixing and Granulation System, comprised of an intensive mixer and a granulation drum, processes 100% of the sinter raw materials, including residuals recycled from the steelworks. There is no need for raw material blending beds at Dragon Steel, reducing the size of the raw material storage and handling areas.
 
Segregation of the raw mix into larger- and smaller-sized particles is made possible by the Twin-Layer Charging System. The initial layer of coarser particles of the sinter raw mix is first deposited onto the sinter bed, followed by the charging of a second layer of smaller-sized particles, including an increased portion of the solid-fuel content. The Twin-Layer Charging System was installed for the first time in the world at Dragon Steel, according to Siemens.
 
The Selective Waste Gas Recirculation system reportedly recirculates approximately 30-40% of the waste gas emitted from the sinter strand back to the process, reducing the volume of waste gas requiring treatment in the downstream gas-cleaning facilities. The Level 2 Sinter VAiron automation system includes a number of closed-loop control modules and an expert system.
 
Sinter Plant No. 2, with a larger production capacity, is currently being constructed and is scheduled to commence operations in October 2012. The suction area of the sinter strand will be 387 m2, allowing a sinter output of approximately 3.8 million tonnes per year. The plant will be equipped with the same technologies and systems that are installed in Sinter Plant No. 1.
 
Dragon Steel Corp. is a subsidiary company of China Steel Corp., the largest steel producer in Taiwan.
 
The Siemens Industry Sector (Erlangen, Germany) is a leading international supplier of environmentally friendly production, transportation, building and lighting technologies. The Sector comprises six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility und Osram. With around 204,000 employees worldwide (September 30), Siemens Industry achieved in fiscal year 2010 total sales of approximately €34.9 billion.
 
The Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities comprising the business activities of Siemens VAI Metals Technologies, Water Technologies and Industrial Technologies. With around 29,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of €6.0 billion in fiscal year 2010.