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Submerged arc furnace

Submerged Arc Furnace is used for many kinds of ferroalloy smelting, including Ferrotungsten, High-carbon Ferromanganese, Ferrosilicon, ferrochrome, Ferronickel and Silicon, Calcium Carbide, Corundum, Yellow Phosphorous, etc.

Detailed description

Usage:

   Submerged Arc Furnace is used for many kinds of ferroalloy smelting, including Ferrotungsten, High-carbon Ferromanganese, Ferrosilicon, ferrochrome, Ferronickel and Silicon, Calcium Carbide, Corundum, Yellow Phosphorous, etc.The nomenclature submerged means that the furnace's electrodes are buried deep in the furnace burden. A reduction reaction takes place near the tip of the electrodes to facilitate the furnace's process.


Furnace structure & main Components:

    A submerge arc furnace's shell or casing is fabricated from steel. The lower part is lined with hard blocks of strongly calcined carbon, and the upper part with firebrick. The floor and lower section of the furnace are water-cooled. Three electrodes are placed at the angles of an equilateral triangle with rounded corners. These furnaces can be equipped with either pre-baked electrodes or Söderberg electrodes. The Söderberg electrodes are heated by the electric current and the furnace heat, then baked solid in the region of the contact clamps. The electrode must become baked solid over its entire cross section (inside the charge) when it is fed downwards to compensate for its consumption in the furnace (which is a few centimeters per hour). 


Mechanism System:

  • Furnace Shell

  • Furnace Cover 

  • Fume exhaust system

  • Electrode System: electrode holder, electrode lifting device and electrode clamping/ releasing device

  • Charging System

  • Hydraulic System

  • High Current System

  • Water-cycling system

  • Tapping System

Electric system:

  • Transformer

  • High-voltage control protection system

  • Low-voltage control protection system

  • Computer operating system

  • Heavy gauge water-cooled cable


Main Parameters of Submerged Arc Furnace


Transformer capacity

(MVA)

Working voltage

(V)

Furnace shall inner dia.

(mm)

Electrode dia.

(mm)

Products

6.3

110

2000

780

Ferrotungsten;

Ferromanganese;

Ferrosilicon;

Ferrochrome;

Ferronickel;

Silicon;

Calcium Carbide;

12.5

141

2600

1020

16.5

154

3200

1200

25.5

200

8600

1300

31.5

224

11500

1500

    NOTE: According to the difference smelting process, these parameters will be adjusted for the difference products.

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