What is RKEF + AOD melting process for stainless steel?
This article briefly introduces A kind of novel process that adopts RKEF and AOD stove duplex practice smelting stainless steel.
RKEF+AOD is a novel technique for smelting stainless steel through an RKEF (rotary kiln-electric furnace) and AOD furnace duplex process. The technique comprises the following steps: directly feeding crude nickel alloy molten iron produced by an RKEF into an AOD furnace, performing duplex refining to produce stainless steel, and making the stainless steel into slabs through a continuous casting system. The invention has the following beneficial effects: intermediate production procedures, such as crude nickel alloy casting, intermediate frequency furnace remelting and the like, are reduced; the heat energy of the crude nickel alloy molten iron is fully utilized; the slag type, slag temperature and molten iron temperature in the crude nickel alloy production are controlled, so that the temperature can reach a certain value during AOD furnace refining, and the pilot and industrial production of the stainless steel can be finished through other technologies; the technique reduces the power consumption and production cost, shortens the product yield time, ensures that the on-site environment is cleaner and more friendly and relieves the labor intensity of personnel; and refined stainless steel products meeting the national standards and customer requirements can be produced.
Keywords: RKEF+AOD, steel making process
Foshan Glimpse Engineering Technology Co., Ltd. (Glimpse Technology for short, its predecessor is Xi'an Weibao Metallurgical Equipment Technology Co., Ltd. established in 2014) is located in Foshan, the main distribution hub of stainless steel in China and Glimpse’s headquarter office is located in Foshan Greenland Financial Complex Building. Glimpse is a high-tech company with a team of top metallurgical experts in China, specializing in development, design, manufacture, installation and commissioning of complete sets of cold rolling equipment and strip processing equipment for stainless steel, carbon steel and non-ferrous metals. Glimpse has a professional team of 40 experts and technicians which including 2 well-known steel rolling expert professors (appointed consultants), 4 well-known foreign steel rolling experts (appointed consultants), 8 professor-level senior engineers, 10 senior engineers, and the rest are master degree holders or experienced technicians with medium-grade or above professional titles. Glimpse masters the core technologies of metallurgical fields: cold rolling, tandem cold rolling, annealing, pickling etc. Glimpse cooperates with world first-class professional companies, university research institutes (such as China North Heavy Industries Group, Sinosteel West Heavy, MCC Shaanxi) Press, China Second Heavy, Xi'an University of Technology, Yanshan University, Germany ABB, Germany Siemens, etc.) for long-term strategic cooperation.
Glimpse provides domestic and oversea steel plants with professional strip cold rolling, strip processing equipment and engineering services.
Cold rolling equipment includes: provides 20-high reversible cold rolling mills, 18-high reversible cold rolling mills, four-high reversible cold rolling mills, six-high reversible cold rolling mills, carbon steel tandem rolling mills, and stainless steel tandem rolling mills for domestic and oversea steel plants.
Strip processing equipment includes: galvanzing and coating line, continuous annealing furnace, pickling line, tension leveller, 23-roll tension leveller, recoiler, skin pass mill, silicon steel processing line and other processing lines.
Engineering services includes: design, engineering, installation, commissioning and training for strip milling and processing equipment. Since its establishment, Glimpse has won royal customers at home and abroad through good performance and reputation in the industry. Customers spread in Guangdong, Guangxi, Shandong, Jiangsu, Zhejiang, Fujian, Shaanxi, Anhui, and other regions as well as India, Indonesia, Russia and other countries. Glimpse wholeheartedly provides customers with high-quality technology, equipment and engineering services, and cooperates with customers and partners to achieve a win-win situation.
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