Structure of nickel electric furnace (2)

Main parameters of copper-nickel antimony ore melting furnace

project

Domestic factory

Beichen Company ¹

North Nickel Corporation ²

Norilsk

Thompson

Furnace internal dimensions (length × width × height) / m

21.5×5.5×4.0

22.74×5.54×5.1

11.2×5.2×4.0

23.2×6.0×5.1

27.4×6.71×3.96

Hearth area / m ²

118.25

126

58

139

184

Electrode diameter / m

1

1.1

1.2

1.2

1.22

Electrode center distance / m

3

3.2

3

3.2

3.76

Number of electrodes

6

6

3

6

6

Number of electric furnace transformers

3

3

1

3

3

Transformer capacity (total capacity) / kVA

5500 (16500)

16667(50000)

30000 (30000)

15000 (45000)

6000 (18000)

Pressure side line voltage / V

304～470

800～475

550~390

743～551

300～160

Power intensity / [kVA.m ^-2 ]

140

396

517

324

98

Bottom brick

Magnesium brick

Chrome magnesia brick clay brick

Cement, magnesia brick

cement

Magnesium filler

Clay brick

Chrome magnesium brick

Slag line wall

Magnesia brick

Chrome magnesium brick

Magnesia brick

Chrome magnesium brick

Magnesia brick

Slag line above the furnace wall brick

Clay brick

Clay brick

Clay brick

Clay brick

Clay brick

Furnace lining thickness / mm

807

　

　

　

　

Bottom (center) / mm

1250

1310

920

1310

1065

Slag end wall thickness / mm

1040

1150

920

1040

1260

Outlet end wall thickness / mm

1040

1150

1215

1150

1180

Side wall thickness / mm

807

1150

690

1040

　

Furnace thickness / mm

300

300

300

300

950

Number of mouths

3

4

3

4

3

Number of slag mouth

3

4

2

4

1

Slag mouth height from the bottom of the furnace / mm

1300

1750

1500

1450

1525

Molten pool depth / mm

21000

2700

2500

2700

-

Nickel crucible depth / mm

600～900

600～800

600～800

600～900

600～750

Electric furnace operating power / kW

　

40000

27000

40000

12000-15000

Average drop distance per electrode / (mm.d ^-1 )

250

450～500

400～500

　

　

Ton charge energy consumption / kWh

600

740

780～815

525~625

400～430

Tons of furnace electrode consumption / kg

5.7~7.8

4.1

2.9

2.8~3.4

1.75~1.9