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Electric Arc Furnace

Electric Arc Furnace (EAF)

High-impedance electric arc furnace equipment is used for the smelting of ordinary steel, high-quality carbon steel and various alloy steel, and it is suitable for all scrap operations, scrap and wrought iron operations, scrap and pellets, preheated scrap, hot briquetted reduced iron (HBI), sponge iron and so on.

Electric Arc Furnace (EAF) features:

1)Furnace temperature can be controlled flexibly to meet different steel grades melting. 

2)  High thermal efficiency, furnace ingredients can be controlled.

3) Sulfur, phosphorus, oxygen and other impurities can be greatly removed to improve steel quality.

4) The chemical composition of steel can be easily controlled. Recovery of alloy is high and stable.

5)The main loop and the reactor are series connection, which can improve system impedance, achieve the second high voltage.

6)Power splitting: ordinary power, high power, ultrahigh power.

7)Steel tapping ways: steel groove tapping and the EBT tapping.

8)Tube-type water-cooling furnace cover and furnace wall.

9)  Copper-steel composite conductive arm.

10)  Centralized large-area water-cooling cable.

11) Energy saving short network.

12)  Proportional valve hydraulic system.

13) PLC+IPC control system.

14) VVVF(variable voltage variable frequency technology).

  

Features of High Impedance EAF:

Reactor is connected in series in main circuit, and it's improved the system impedance, achieved secondary high voltage, long-arc low current operating, high and arc power. Furnace adopts on-load voltage regulation in running. It has two operation modes, right operation and left operation. Furnace lid is spin-open type, top feeding, eccentric bottom tapping. The furnace is a frame-type water-cooled structure, the upper shell and the lower shell can be demolished, the lid is a concentric circular tube water-cooled structure, hydrocarbon gun on the furnace door and burner on furnace wall. Proportional valve controls the electrode lifting, lid rotation and furnace tilting. Adopt ull set of PLC and computer control system, computer screen monitoring system.

The whole electric arc furnace is composed of the following parts: furnace body, tilting device, electrode lifting device, lifting and rotating device, water cooling device and its alarm device, hydraulic station, air compressor system, feeding system, high voltage switch system, transformer, series reactor, low-voltage power supply and distribution systems, computer control system and computer screen monitoring system.

The main technical parameter of the Electric Arc Furnace (EAF)

Model

Furnace shell
inner diameter
(mm)

Capacity
(T)

Transformer Capacity
(KVA)

Transformer
secondary
voltage(V)

Electrode
diameter
(mm)

HX-1.5

2100

1.5-2

1250

210-104

200

HX-3

2500

3-5

2200

220-110

250

HX-5

3200

5-8

3200

240-121

300

HX-10

3500

10-15

6300

260-139

250

HX-15

3800

15-20

9000

280-100

400

HX-20

4000

20-25

9000

280-100

400

12500

314-116

HX-30

4600

30-35

16000

353-137

450

20000

420-250

25000

436-184

HX-40

4800

40-45

30000

620-350

500

HX-50

5200

50-60

40000

750-350

500

HX-60

5400

60-70

45000

750-360

500

HX-75

5800

75-85

50000

610-250

550

HX-90

6100

90-100

60000

740-270

600

HX-100

6400

100-110

80000

760-310

600

HX-125

6800

125-135

100000

880-330

650