Successful Hot Run of No.2 Steel Making Plant (Phase-III Project) at Hyundai Steel Dangjin Works, South Korea

5. Nov, 2013


A successful hot run was held in early September 2013 of No.2 Steel Making Plant (Phase-III, 4 million ton/year expansion) carried out as a follow-up to the construction of No.1 Steel Making Plant (Phase-I & II, 8 million ton/year) at Hyundai Steel (head office, Seoul) Dangjin Works, which was completed between 2010 and 2011. This brings the total capacity of the Dangjin Works to 12 million ton/year.

This Phase-III project, just 20 months of the unprecedented shortest delivery period was required, started the simultaneous construction of OG equipment on November 2012 and the commissioning work of each equipment had been started from May 2013. All the equipment had been started up in sequence, beginning with secondary refining facilities (RH, LF), hot metal pretreatment system (KR) on August 2013, and finally successful hot-run of No.4 & No.5 BOF was achieved on September 2013.

With the completion of Phase-III project, Hyundai Steel has realized integration of No.1 Steel Making Plant and No.2 Steel Making Plant in the form of a Compact Integrated Steel Mill (CISM) with mutually complementary logistics and processing functions thanks to a globally pioneering layout whereby the hot metal pit is shared with No.1 & No.2 Steel Making Plant.

For Hyundai Steel, its steel making plant is the most important process in deciding the quality of the automotive steel sheets it supplies to Hyundai/Kia Motors, and this high-efficiency, high-quality steel production process, which was achieved due to the knowledge and hard work of all involved parties, has attracted much attention from the steel industry. For Steel Plantech, aside from representing an invaluable experience, this project is also an invaluable asset in the trust relationship built with Hyundai Steel over many years from Phase-I to Phase-III.


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RH Degasser

Molten steel, taken out of the converter furnace, is ultimately refined and degassed during the secondary refining process. The RH Vacuum Degasser is ideal for the swift degassing of large amounts of molten steel. The RH Vacuum Degasser is also suitable for the mass production of high purity steel at integrated steelworks, realizing decarburization and heating by injecting pure oxygen gas into the vacuum vessel. Furthermore, it has extended refining functions, such as the acceleration of desulfurization and deoxidation through addition of flux while controlling the form of the impurities.

KR Hot Metal Desulfurization System

Demand for high purity steel is becoming stronger as quality demands for steel become higher. This is especially true for sulfur content, and there is now a need to make strict adjustments to the amount contained in the manufactured steel. This process of removing impurities from molten metal in advance before charging it into a converter furnace is called hot metal preliminary processing.
The KR Hot Metal Desulfurization System developed by Steel Plantech will achieve high-level desulfurization efficiency as well as contribute to a reduction of operating costs.


A steel manufacturing plant centered on converter systems is Steel Plantech’s core product, and more than 130 units have been delivered to date since 1960. In addition to providing equipment that constitutes a steel manufacturing plant, including KR hot metal desulfurization systems, converter systems, exhaust treatment systems (OG) and secondary refining systems (RH/LF), Steel Plantech can coordinate the whole plant. Our OG system is rated highly for its high level of safety, low environmental burden, and energy saving effects.

OG System

The OG system (Oxygen Converter Gas Recovery System) is suppressed type LD gas recovery system for the converters of steel makings shops. The OG system was jointly developed and improved by both Nippon Steel Corporation (NSC/ now NSSC) and Kawasaki Heavy Industries Ltd. (KHI), in Japan. In 2004, steel plant division of KHI was transferred to JP Steel Plantech, Co (SPCO).
Therefore, SPCO and NSC have developed the technologies and own the patents of the OG system. Until now, totally 192 OG systems have been installed in all over the world, thus the name of “OG” is widely admitted not only as the safest process for recovering LD gas with high efficiency but also as a synonym of the best solution for energy saving and environmental control.

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