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Graphite Electrode2016-08-30

Graphite electrode

Production Description.

Graphite electrode is made from the domestic first petroleum coke and high quality needle coke and widely used in the electric arc furnaces for production of alloy steels, metal and other nonmetallic materials, etc. The graphite electrodes include regular power, high power, super high power, ultra high power and square electrode. The range of diameters covers from 200mm to 700mm. Our products own the following characteristics: low electric resistance, good electric and thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy.

 

Do you know our material of the graphite electrode?

The regular power graphite electrode is made from petroleum coke with a little pitch, which meets  the state standards YB/T4088-2000

The high power graphite electrode is made form 70% petroleum coke and 30% imported needle coke, which meets the state standards YB/T4089-2000

The ultra high power graphite electrode is made form 100% imported needle coke, which meets the state standards YB/T 4090-200

Note: Needle coke is one kinds of very important material to produce the high grade graphite electrode, which is rapid development in carbon graphite industry. The needle coke own the following characteristics: low electric resistance, low dilatation coefficient, good electric and thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy, low consume.

 

Do you know how do we produce the graphite electrode?

1, we will select the best material which meets the state standards.

2, The raw material will be crushed and calcined.

3, The material need to be medium crushed and milled.

4, We will screen the milled material and dose the material.

5. The material will be kneaded.

6. We will use the equipment extruded and formed the raw shape.

7. The raw graphite electrode need to be baked and impregnated, then it will be had a graphitization. (The high power graphite electrode is baked twice and impregnated one time. The ultra high power is baked three time and impregnated twice.)

8. We will machine the formed graphite electrode. After inspection, the final product finished.

Do you know how many kinds of our graphite electrode?

1, according to the power, we have regular power, high power, super high power, super high power and American Ucar standard.

2, according to the shape, we have round shape and square shape.

3, according to the size, the diameter is from 200mm to 700mm.

 

Do you know the use of the graphite electrode?

1, It is used for the electric arc furnace steel making. (About 70-80% graphite electrode is used for steel making).

2, It is used for the submerged arc furnace, including melting iron alloy, pure silicon, yellow phosphorus, matte, calcium carbide and so on.

3, It is used for the resistance furnace, such as the graphite making, melting glass, silicon carbide making and so on.

 

Do you know how to choose the graphite electrode?

Many kinds of factor can influence the chosen of the graphite electrode, such as the capacity of your furnace, variety of your furnace, the value of the Transformer, the value of secondary current, the variety of metal, the quantity of metal. So if you want to get the best chosen, all the information need to be confirmed.

According to our experience and the kinds of furnace in China, some suggestions are as follows,

1, the capacity of 5 tons Electric Arc Furnace(EAF): 250mm diameter regular power(RP) graphite electrode..

2, the capacity of 10 tons Electric Arc Furnace(EAF): 350mm diameter high power(HP) graphite electrode.

3. the capacity of 20 tons Electric Arc Furnace(EAF): 400mm diameter high power(HP) graphite electrode.

4. the capacity of 30 tons Electric Arc Furnace(EAF): 450mm diameter high power(HP) graphite electrode.

5. the capacity of 50 tons Electric Arc Furnace(EAF): 500mm diameter ultra high power(UHP) graphite electrode.

6. the capacity of 75 tons Electric Arc Furnace(EAF): 550mm diameter ultra high power(UHP) graphite electrode.

7. the capacity of 100 tons Electric Arc Furnace(EAF): 600mm diameter ultra high power(UHP) graphite electrode

8. the capacity of 150 tons Electric Arc Furnace(EAF): 700mm diameter ultra high power(UHP) graphite electrode

9. the capacity of 10 tons Ladle Furnace(LF): 250mm diameter regular power(RP) graphite electrode.

10. the capacity of 20 tons Ladle Furnace(LF): 300mm diameter high power(HP) graphite electrode.

11. the capacity of 30 tons Ladle Furnace(LF): 350mm diameter high power(HP) graphite electrode.

12. the capacity of 50 tons Ladle Furnace(LF): 350mm diameter high power(HP) graphite electrode.

13. the capacity of 75 tons Ladle Furnace(LF): 350mm diameter ultra high power(UHP) graphite electrode.

14. the capacity of 100 tons Ladle Furnace(LF): 450mm diameter ultra high power(UHP) graphite electrode.

15. the capacity of 150 tons Ladle Furnace(LF): 450mm diameter ultra high power(UHP) graphite electrode.

16. the capacity of 40 tons converter with Ladle Furnace(LF): 350mm diameter high power(HP) graphite electrode.

17. the capacity of 65 tons converter with Ladle Furnace(LF): 350mm diameter ultra high power(UHP) graphite electrode.

18. the capacity of 100 tons converter with Ladle Furnace(LF): 400mm diameter ultra high power(UHP) graphite electrode.

19. the capacity of 120 tons converter with Ladle Furnace(LF): 450mm diameter ultra high power(UHP) graphite electrode.

20. the capacity of 180 tons converter with Ladle Furnace(LF): 500mm diameter ultra high power(UHP) graphite electrode.

21. the capacity of 300 tons converter with Ladle Furnace(LF): 550mm diameter ultra high power(UHP) graphite electrode.

The above information is for your reference, if you have any question and inquiry, please don’t hesitate to contact us.

Do you know the operating instruction of the graphite electrode?

1, Use special hoist tools to hoist graphite electrode. It is strictly forbid to prize electrode ends up with crowbar. It must be handled with great care during transport to avoid being struck.

2, Graphite electrode must be kept away from being moistened or wet by rain, snow and water, and must be kept dry.

3, Carefully checking before making connection, make sure that the socket and nipple thread is not damaged, nipple pitch plug is in.

4, Blow the nipple and socket threads with compressed air.

5, It must be dried in the furnace before use. The drying temperature in the furnace should be less than 150 degree. The drying period should be more than 30 hours.

6, Graphite electrode must be connected and contacted closely and straightly. Use moment spanner for connection electrode with suitable force. Must not decline.

7, The holding device must hold the electrode tightly, good contact and no arc.

8.To avoid the electrode breakage, put the large materials in lower part and small materials in the upper part. Insulating materials should not be put into the furnace. The working current of electrode must be conformity with the allowable current of electrode in the instructions.

Note: The consumption of Electric Arc Furnace(EAF) is about 3-5kg per ton steel. The Ladle Furnace(LF) is about 1kg per ton steel. The converter with Ladle Furnace(LF) is about 0.5kg per ton steel. All the information is for your reference. There are many factors can influence the consumption, such as the kinds of steel, conduction time, process production and so on. So if you have any question, please don’t hesitate to contact us.

 

 

Item

Petroleum coke

Imported Needle coke

State Standards

RP graphite electrode

100%

 

YB/T4088-2000

HP graphite electrode

30%

70%

YB/T4089-2000

UHP graphite electrode

 

100%

YB/T4090-2000

 

 

Capacity of Furnace

EAF

LF

5 tons

250mm RP

 

10 tons

350mm HP

250mm RP

20 tons

400mm HP

300mm HP

30 tons

450mm HP

350mm HP

50 tons

500mm UHP

350mm HP

75 tons

550mm UHP

350mm UHP

100 tons

600mm UHP

450mm UHP

150 tons

700mm UHP

450mm UHP

 

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