Electric Arc Furnace and Hot Rolling Mill Danieli

160Ton EAF + Mitsubishi 1650 mm W Hot Rolling (Strip) Mill -

Electric Arc Furnace and Hot Rolling Mill (Strip)

1) General specification :

Date of operation 2009. 07.01, Shutdown : 08.

2019 Reason for shutdown Management deterioration

Products capacity 3.0 million ton / year.

Steel kind AHSS 80, API, SPFS590, High carbon steel, etc. 

2 Facility specification

2.1 Electric Arc Furnace

Type  : AC Consteel, EBT ,

Capacity : 160 ton / heat 2units

Transformer : 140 MVA 2units

Electrode arm size : 28 inch Conducive arm : cupper

Furnace dia. : 7.700 mm

Oxygen injector : 2400 Nm3 / hr. x 4 ea

Carbon injector : 50 kg / min. x 2ea

C/O2 injector : 3,700 Nm3 / hr. , 45kg / min. x 1ea

Lime injector : 200 kg / min. x 1ea. 

 2.2 Laddle Furnace 

Type : Twin station, TTT : 46min. / heat,

Capacity : 160 ton / heat

Transformer : 34 MVA

Electrode arm size :18 inch

Temperature rising : 4.5°C / min.

VD-OB : Twin station.

2.3 Continuous Caster 

Type : Vertical curved caster, 2 units

Radius : 5,000 mm,

Slab size : 70, 85 mm x 900~1,650 mm,

Casting speed : 70 mm slab : 6.0m/min., 85mm slab : 4.6m/min.

Mould : Length : 1,200 mm,

Strand Segments : 9ea.

Dummy bar : Bottom feeding (T x W x L) 85 x 1335 x 10100 mm,

Ladle turret : 160 ton (max.190 ton), 

Tundish : 38 ton (max. 42 ton),

Tundish car : Moving speed : 2m~20 m/min., Lifting speed : 300 m/min.

Oscillator Frequency : 0~450cycle / min. Stoke : 0~10mm 

Shear : Pendulum type, Capacity : 13,000 KN max., Knife length : 1,900 mm,

2.4 Hot Rolling Mill

Type : Pair cross type

Product size : 1.2 mmT~16 mm T x 900 mm ~1650 mm x max. 30 ton,

Product capacity : 3.0 million ton / year,

Tunnel Furnace : 505 ton A line: 219.25 m, B line:176.8m, Shuttle ferry type Slab size : 70 mm T / 85, mm T x 900 W mm / 1,650Wmm Fuel : LNG,

Length : A-219.25m, B-176.8m, out put temp.: 1,150°C,

Vertical edger : Roll dia. : 580 mm ~ 640mm,

Roughing mill : 4 high x 2stand, RSB, AGC, Pass linner, Pinion,

Finishing mill : 4 high x 5stand, FSB, AGC, Step liner, Pass liner, Looper Line max. speed : 760m/min.

Run out table : 12 banks, top : laminer flow, bottom : spary 

Down coiler : Pinch roll, unit roll, mandrel,

2.4 Skin pass mill

Type : Single stand 4high

Product capacity : 1.2million ton

Mill specification : Strip thickness : 1.0 mm ~ 6.0 mm Strip width : 900 mm~1,630 mm Line speed : 1.0 mm - 500 m/min., 6.0 mm - 255 m/min. 

Coil dia. : Inn : 762mm, out : 1000 mm ~ 2,100mm, weight : 5,000 kg ~ 30,000 kg,

Roll shop : Buck up roll grinder : 1 unit, Work roll grinder : 3 unit,

2.5 Water treatment facility

Pump : 228 unit 

Filter : 46 unit 

Cooling tower : 13 sets 

2.6 Substation

Transformer : 154 KV / 3,3 K, 220 MVA 2 unit, 200 MVA 1 unit 

Generator : 6,6 KV / 2,500 KVA 2 unit 

This mill is included Electric Arc Furnac ( 160ton)

This mill is on foundation in works