HYUNDAI STEEL, South Korea

Construction of new Blast Furnaces 1, 2 & 32010 / 2013

Blast Furnace Constructions, Rebuilds & Relines

Introduction

In the years 2006-2007, the South Korean steelmaker Hyundai Steel (HSC), which is part of the Hyundai Motor Group, decided to invest in the construction of a new integrated steel-works in Dangjin (120 km southwest of Seoul), comprising three large blast furnaces and thus complementing the existing EAF steelmaking route. The aim of the project was to make high-grade products mainly for automotive applica-tions. All together, the electric arc furnaces and blast furnaces allow HSC to produce up to 24 million tons of steel per year. The high-productivity units integrate the latest envi-ronmentally friendly technologies, reflecting the eco-friendly management philosophy of Hyundai Steel.

Project Realisation

In April 2007, the Paul Wurth Group has been contracted to provide the plant design and the key equipment supply for the two nearly identi-cal blast furnaces N°1 and N°2, designed for a production of 4.08 million tpa of hot metal each.The very challenging project schedule was met over the entire design and construc-tion period. Blow-in of BF1 was completed in January 2010. The start-up of BF2 followed in November 2010. Commissioning a total an-nual production capacity of 8 million tHM has never before been achieved within the space of a year at a single plant.

Shortly after the successful start-up of these furnaces, Paul Wurth was entrusted in March 2011 with a similar supply scope for the con-struction of the third blast furnace.

Again the project schedule for BF3 was very tight and required a perfect coordination. Only three years after the blow-in of the first two blast furnaces, HSC completed its ambitious integrated steelplant project by putting BF3 in operation on 13 September 2013. Thanks to the exemplary team work between Hyun-dai Steel and Paul Wurth, this project turned out highly successful and can be considered a key reference: The 12-million-ton project in Dangjin was not only brought to completion as planned, but even ahead of schedule!

Project Description

Hot blast stoves

Hyundai Steel’s new integrated steel works in Dangjin

Project Data

Blow-in dates : 5 January 2010 (BF1) 23 November 2010 (BF2) 13 September 2013 (BF3)

Blast Furnace Data (per BF)

Annual production : 4.08 Mio tHM (BF1 & BF2) 4.28 Mio tHM (BF3)

Daily production (avg.) : 11 650 tHM (BF1 & BF2) 12 230 tHM (BF3)

Services

` Technology and concept engineering

` Basic engineering of the blast furnace plant

` Detail engineering of critical areas

` Erection supervision

` Training & operational assistance

` Commissioning

Key Component Supplies

` Bell Less Top® charging systems

` Bleeder valves, equalising and relief valves

` TMT probes*

` Hot blast stove plants with external combustion chamber

` Gas cleaning plants with axial cyclones and annular gap scrubbers

` Pulverised coal injection systems with individual flow rate control

` TMT casthouse equipment*

` INBA® slag granulation and dewatering plants with cold water system and full condensation

` Process models

The blast furnace proper is a free-standing type with a surrounding access and support tower. Each blast furnace has 4 tapholes serviced by TMT high-performance clayguns and taphole openers*. Automatic clay mass preparation and loading systems fill the clayguns. TMT drill rod changing equipment* services the taphole openers. The cast floors are of flat design with all safety features. 3x3 external combustion chamber stoves gen-erate the hot blast for each BF. The furnaces’ high performance operation is enhanced by pulverised coal injection. Paul Wurth’s indi-vidual flow control system provides the nec-essary coal distribution accuracy over the tuyeres with deviations of less than +/- 1%.

Paul Wurth’s Scope of Supply

BF 2 inauguration ceremony

Castfloor

Hearth diameter : 14.8 m

Number of tuyeres : 42

Number of tapholes : 4

BF inner volume : 5 250 m3

BF working volume : 4 525 m3

Hot blast temperature : 1280 °C (max.)

PCI : 180 kg / tHM (normal) 250 kg / tHM (max.)

International presence:Brazil, Chile, Czech Republic, Germany, India, Italy, Japan, Korea, Mexico, P.R. China, Russia, South Africa, Taiwan, Ukraine, U.S.A., Vietnam

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Non Contractual Data: Paul Wurth believes that the data contained in this folder are correct and accurate, but cannot guarantee same or better performances for any specific site without a detailed quote. Patents and Patents pending. — Paul Wurth equipment and processes are protected in many countries by patents.

Paul Wurth, the Paul Wurth Logo, Bell Less Top, BLT and INBA are trademarks of Paul Wurth S.A. and may be registered in your jurisdiction.

VCA**CER

TIFIED SAFETY SYSTEM

VINCOTTE

ISO 9001ISO 14001

BUREAU VERITASCertification

Technical Highlights

Paul Wurth S.A.32, rue d’AlsaceL-1122 LuxembourgPhone: (+352) 4970-1Fax: (+352) 4970-2209paulwurth@paulwurth.comwww.paulwurth.com

* TMT – Tapping Measuring Technology, a joint company of Dango & Dienenthal and Paul Wurth.

Bell Less Top ®

INBA ® – slag granulation plant Pulverised coal injection

TMT casthouse equipment* Gas cleaning plant