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Baosteel Starts Up World’s Largest Corex Ironmaking Plant
11/19/2007 - Baosteel Pudong Iron and Steel starts up a Corex C-3000 plant, with a nominal production capacity of 1.5 million tons of hot metal per year, making it the world’s largest.
Baosteel Pudong Iron and Steel Co. Ltd. at Luojing, near Shanghai, China, recently started up a Corex C-3000 plant, with a nominal production capacity of 1.5 million tons of hot metal per year. Siemens Metals Technologies completed the project within only 29 months from the contract signature.
Baosteel Pudong steel (the former Shanghai No. 3 Steel Company) was rebuilt at Luojing in the Baosteel industrial area on the western outskirts of Shanghai due to the relocation projects for the 2010 World Expo. With consideration to the inherent economical and environmental advantages offered by the Corex process, Baosteel decided to base their iron production on this technology instead of on the conventional blast-furnace route. The tapped hot metal is comparable in quality to that produced in a blast furnace.
The Corex Process allows a wide range of coals to be substituted for coke in smelting-reduction operations, which considerably reduces raw-material costs and environmental emissions. Corex fully meets the strict environmental regulations that were imposed by the municipal government as a precondition for the reconstruction of the steel works. Top gas from the Corex plant is used a combined-cycle electrical power station as well as for heating purposes throughout Baosteel's steel works.
Siemens’ scope for the Corex facility included supply of the complete process engineering, engineering of key plant areas, and engineering and supply of core equipment and components. Siemens supplied coal dryers, hot-gas generator, oxygen burners, screw conveyors for the reduced iron and coal, gas-cleaning equipment and recycling systems, cooling-gas compressors, and gas-gate valves. Siemens also supplied two Gimbal-charging systems—one for charging burden into the reduction shaft and one for charging coal into the melter gasifier—as well as electrical equipment for Level 1 and Level 2 automation, and core instrumentation.
Siemens also provided advisory services for local manufacturing, engineering erection and plant start-up as well as training rounded off the Siemens scope of supply.
In the course of this 29-month project, over 5000 pilings were installed and 10,200 tons of steel structure were erected—100 tons more than the weight of the Eifel Tower. The height of the Baosteel Corex tower is 118 meters, which is 15 meters higher than the Statue of Liberty in the U.S. More than 4000 on-site working personnel were involved in the construction of the Corex plant.
“That a project of this size and complexity could be completed within such a short time period, especially when it involves an innovative ironmaking technology, is a testimony of the outstanding efforts, coordination and the will to succeed by all parties involved,” commented Christian Böhm, Sales Manager for Smelting-Reduction and Direct-Reduction Technology.
In the plant commissioning period the process parameters of Baosteel's Corex plant will be further optimized to maximize the economical and environmental advantages.
Baosteel Group Corp. is one of the largest steel producers in China.
Metals Technologies (MT), a Division of the Siemens Industrial Solutions and Services (I&S) Group, is one of the world's leading engineering and plant-building companies for the iron and steel industry as well as for the flat-rolling sector of the aluminum industry and for open-cast mining. MT, which was created from the integration of Voest-Alpine Industrieanlagenbau, Linz/Austria, plus the electrical engineering product business and automation solutions of Siemens, provides a comprehensive range of supplies and services for all related technological processes and integrated automation solutions for the entire life-cycle of metallurgical plants.
The Siemens Industrial Solutions and Services Group (I&S) is the integrator of systems and solutions for industrial and infrastructure facilities and global service provider for the plant and projects business covering planning, installation, operation and the entire life cycle. I&S uses its own products and systems and process technologies in order to enhance productivity and improve competitiveness of companies in the sectors of metallurgy, water treatment, pulp and paper, oil and gas, marine engineering, open-cast mining, airport logistics, postal automation, intelligent traffic systems and industrial services. In fiscal 2007 (to September 30) I&S employed a total of 37,000 people worldwide and achieved total sales of EUR 8.894 billion, according to U.S. GAAP.
