Shanxi Taigang reposition themselves with duplex RH plants from SMS Mevac
In November 2011, Taigang Group International Trade Co.,Ltd., located in Taiyuan, China, awarded SMS Mevac, Germany, and its consortium partner SMS Siemag Technology (Beijing) Co., Ltd. a contract to supply a new RH recirculation degasser with Top-lance system and convert the existing fast-vessel-change RH plant supplied by SMS Mevac in 1996 into a duplex RH plant.
The scope of supply includes nearly the complete basic engineering, main parts of the detail engineering, the delivery of key components of mechanical, electrical and instrumentation equipment, the complete level-1 and level-2 automation systems as well as supervision of installation and commissioning. Modernization of the existing RH plant includes the installation of a second treatment position, two new TOP-lance systems, a new four-stage steam-ejector vacuum pump and the replacement of the vacuum alloying system.
Commissioning of the new RH-TOP plant is scheduled to take place in the first half of 2013. Then, the conversion of the existing RH-TOP plant into a duplex plant will be carried out. Both plants will be designed to treat heats with a nominal weight of 80 t and laid out as duplex plants with two treatment stations. Each treatment station includes a hydraulically actuated ladle lifting system, a metallurgical TOP lance and vacuum lock for the addition of ferroalloys.
The vacuum will be generated by a four-stage steam-ejector vacuum pump with variable pressure reduction (RH-SC) for optimized process control.
Both plants will primarily be used for the treatment of steel for electric sheet production.
SMS Mevac GmbH form part of the Metallurgical Plant and Rolling Mill Technology Business Area of the SMS group.
Maanshan successfully commissioned SMS Mevac duplex RH plant
Maanshan Iron & Steel (Group) Co., Ltd., located in Maanshan, China, has successfully commissioned the new duplex RH plant delivered by SMS Mevac, Germany.
The plant is designed to treat with a nominal weight of 120 t and features two treatment positions. Each treatment position is equipped with a hydraulic ladle lifting system, a burner lance and a vacuum alloying system for the addition of ferroalloys under low-pressure conditions.
The vacuum is generated by means of a state-of-the art four-stage steam ejector vacuum pump system with variable pressure reduction for optimized process control.
The duplex RH plant is part of a new electric steelmaking shop which will produce, amongst others, semi-finished products for high-speed train wheels.
The scope of supply of SMS Mevac included the complete basic engineering, main parts of the details engineering, delivery of mechanical, electrical and instrumentation key components, the complete level-1 and level-2 automation system, as well as supervision of the erection and commissioning.
Furthermore, the AGC 4000-type automatic inert gas coupling systems are included for the whole steelmaking shop.
Successful commissioning of 320-t duplex RH-TOP plant from SMS Mevac at the metallurgical combine of Novolipetsk (NLMK)
The metallurgical combine of Novolipetsk (NLMK), located in Lipetsk, Russia, has successfully commissioned the RH-TOP plant supplied by SMS Mevac GmbH, Germany.
The new duplex RH-TOP plant will be used predominantly for the production of ultra-low-carbon steels and low-alloy grades, among others for the production of pipes and tubes and for ship building. It is planned to treat more than 4 million tpy of steel in the RH plant.
The duplex plant, designed to treat heats with a nominal weight of 320 t, is equipped with a high-efficiency vacuum pump system.
Both treatment stations use a very reliable hydraulic rocker-type system for lowering the snorkels into the steel bath. The plant is completed by devices such as TOP lances, a common alloying system with double-chamber vacuum locks and temperature measuring and sampling devices with slag breakers. The supplied plants also include two stations for additional treatments. Each station is equipped with a cored-wire feeding system, devices for insulating powder addition and sample taking for hydrogen measurements.
The scope of supply comprised the complete basic engineering, delivery of main equipment, complete basic automation and level-2 process automation systems and supervision of installation and commissioning.
SMS Mevac GmbH forms part of the Metallurgical Plant and Rolling Mill Technology Business Area of the SMS group.
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