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Fuxin Special Steel Orders Stainless Steel Plant from SMS Siemag
09/22/2010 - Fuxin Special Steel Co. Ltd. has placed an order with SMS Siemag for the planning and supply of a steelworks for the production of stainless steel slabs. It will reportedly be the first stainless steel plant in the world to utilize the waste heat from the AOD converter and the electric arc furnace.
Fuxin Special Steel Co. Ltd. has placed an order with SMS Siemag for the planning and supply of a steelworks for the production of stainless steel slabs. SMS Siemag says it will be the first stainless steel plant in the world to utilize the waste heat from the AOD converter and the electric arc furnace (EAF).
The new construction project at the Zhangzhou location, in the southeast of the Chinese province of Fujian, comprises a plant and equipment for stainless steelmaking on a scrap basis via the Duplex route, a continuous slab caster, and comprehensive environmental technology systems for gas cleaning and energy recovery. The works is designed for a production of 720,000 tonnes of steel per year. Commissioning is scheduled for the end of 2012.
SMS Siemag will supply the complete basic and detailed engineering, the supply of mechanical and electrical core components, the X-Pact® electrical and automation package including the process automation (Level 1) and the metallurgical process models (Level 2), all supplied items, and the supervision of erection and commissioning.
The X-Melt® steel plant consists of a 160-tonne EAF with tapping spout, a 180-tonne AOD-L converter, and a 180-tonne ladle furnace. Converter vessel changing is performed by using the proven changing car concept, which enables the converter vessel to be changed twice as quickly as with the conventional method, according to SMS Siemag.
The primary emissions will be extracted via cooled stacks and fed to two bag filter houses. The EAF and the AOD converter are to be provided with enclosures (“dog houses”) for capture of the dust-laden secondary emissions. Additional dust produced will be captured at emission points and extracted. The gas cleaning systems are designed for filtering more than 2.3 million cubic meters of air per hour.
The steelworks will be equipped with an X-e² energy recovery system, utilizing the thermal energy of the hot waste gases from the EAF and AOD to produce superheated steam. The two energy recovery systems supply 36 tonnes of saturated steam per hour, which will be fed into the works’ steam network for various technical purposes.
The range of grades produced by the steelworks includes ferritic, austenitic, and martensitic stainless steels, which are processed on the X-Cast® continuous caster to provide slabs of 200 or 220 mm thickness. During casting, the width can be set from 800 to 1600 mm.
The plant is equipped with Intelligent Slab Casting (ISC®) modules. These include the hydraulically powered resonance oscillator, the position-controlled CYBERLINK segments, and the metallurgical Dynamic Solidification Control (DSC) process model for control of the secondary cooling. Together with the electromagnetic strand stirrer (EMS), a development by SMS Siemag and SMS Elotherm, these technologies are said to enable the production of slabs to a very high degree of quality.
The works layout already makes provision for a second expansion stage, allowing production capacity to be doubled.
Fuxin Special Steel Co. Ltd. is part of the Formosa Plastics Group, a private company group with head office in Taipeh, Taiwan.
SMS Siemag AG is a company of the SMS group, which is, under the roof of the holding SMS GmbH, a group of companies internationally active in plant construction and mechanical engineering for the steel and nonferrous metals industry. It consists of the two business areas, SMS Siemag and SMS Meer. In 2009, some 9000 employees worldwide generated a turnover of EUR 3.9 billion.
