DRAGON STEEL CORPORATION,
TAICHUNG, TAIWANSINTER PLANT NO.1

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A STATE-OF-THE- ART
SINTER PLANT
With selective waste gas recirculation
for adherence to strict environmental
regulations and low production cost

MAIN BENEFITSTHE CUSTOMER• Low environmental impact

Name. Dragon Steel Corporation (DSC)• High sinter quality for high blast furnace
performance

Location. Taichung, Taiwan• High availability

Services. DSC is a 100% subsidiary of China SteelCorporation, the largest steel producer in Taiwan.
Dragon Steel currently produces approximately
800,000 tons per year of carbon-steel grades,
which are cast as billets, blooms or beam blanks,
and followed by rolling into heavy sections. At thestart-up of phase 2 of the steelworks in 2012, DSC
had a flat-steel production capacity of 5 million
tons of high-quality slabs per year.

• Low electrical energy consumption• No blending yards required• Low maintenance costs• High flexibility in raw material selection

PLANT TECHNICAL FEATURES

PLANT TECHNICAL FEATURESTHE CHALLENGESCOPE OF SUPPLYThe Taiwanese steel producer Dragon Steel Corporation(DSC) awarded Primetals Technologies with a contract todesign and supply a new sinter plant for a daily productionof 7,440 tons.

• Basic and detail engineering for key equipment

The sinter plant is part of a new iron and steel works built
in the harbor area of Taichung. Following the start-up of
the works in December 2009, Dragon Steel entered theflat-steel market sector with a production capacity of 2.5
million tons of high-quality slabs per year.

• Automation systems (Levels 1 and 2)

Suction pressure-1,650 mm WC

Under size (-5mm)

max. 6%• Training

Off gas volume to stack

400,000 Nm³/h

Over size (+50mm)

max. 5%

Recirculation-gas volume

260,000 Nm³/h

TI (ISO)

min. 76%

Hot air from cooler

100,000 Nm³/h

RDIThe sinter plant is furnished with state-of-the-art sintering
technology from Primetals Technologies. On the one hand,
this technology allows for low-cost operation of the sinterplant, which also boasts high flexibility regarding the ironores that can be treated. On the other hand, operation is inaccordance with Taiwan’s strict environmental regulations.
THE SOLUTION
In order to achieve the required productivity and sinterquality, the sinter plant design features the latest Primetals
Technologies developments to produce sinter that enables
high-performance blast furnace operation with a low
environmental impact from the sinter offgas. The plant
is equipped with the following unique components from
Primetals Technologies:• Intensive mixing and granulation (IMGS®)• Grate-wing pallet cars

• Supply of key equipment• Advisory services for manufacturing, erection, start-up
and commissioning

Sinter plant area

478.5 x 90.5 m - 40,000 m²

Sinter production

7,440t/day
max. 120°C

Cooling area

264 m²

Discharge temperature after cooler

Suction area

248 m²

FeO content

DeSOx
DeNOx & DeDioxin

Screening and crushing

Plant de-dusting

Coated bag filter process
operating with hydrated lime
Dual functional catalyst
process operating withammonia
Scalping screen, roller crusher,hearth layer screen and returnfines screen (+ stand-by line)
ESP (maximum dust content
at stack 20 mg/Nm³)

max. 7.5%

Over size (+50mm)

Consumption of coke-oven gas

max. 38%
max. 2.5 Nm3/t sinterEMISSION DATA
Dust

max. 20 mg

SOxmax. 50 ppm (15% O2)

NOxmax. 70 ppm (15% O2)

DioxinPlant dedusting efficiency

max. 0.5 ng-TEQ/Nm³ (15%O2)
max. 20 mg/Nm³

TIME SCHEDULE
Contract signing
Start-up

August 2006
December 7. 2009

• Selective Waste Gas Recirculation System• Grate-wings cooler troughs
To ensure a low environmental impact, the plant is designedwith DeSOx, DeNOx and DeDioxin equipment.

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