graphite electrodes in steel making

Mainly used in steelmaking electric arc furnace, refining furnace, industrial silicon furnace, yellow phosphorus furnace, corundum furnace, etc., as conductive usage.

Graphite electrode series products are made of high quality carbon materials.The main products are: RP graphite electrode, smelting furnace shaped carbon block, impregnated graphite electrode, high power graphite electrode, graphite crucible, electrode paste, recarburizer, and non-standard specifications of shaped carbon products.

PRODUCT DESCRIPTION

NAME: Graphite Electrode

MODEL: 400mm

Introduction

The graphite electrode is mainly made of petroleum coke and needle coke, and the coal asphalt is used as a binder. It is made by calcination, distributing, kneading, forming, roasting, graphitization and machining. It's a conductor which release electric energy in the form of electric arc in the electric arc furnace heats and melts the material. the charge can be divided into a regular power graphite electrode, a high power graphite electrode and an ultra high power graphite electrode according to its quality index. The main raw material for graphite electrode production is petroleum coke. The regular power graphite electrode can be added with a small amount of pitch coke. The sulfur content of petroleum coke and pitch coke cannot exceed 0.5%. Needle coke is also required for the production of high power or ultra high power graphite electrodes.

China graphite electrodes factory:Shijiazhuang huanan carbon factory

Advantage

The advantage of graphite electrode is that it is easy to process, the electricity discharge processing rate is high, and the graphite loss is small.

Production characteristics

The production period is long. The production period of regular power graphite electrodes is about 45 days, the production period of ultra high power graphite electrodes is more than 70 days, and the production period of graphite electrode joints (nipples) requiring multiple impregnation is more longer.

petroleum coke graphite electrode Application:

Mainly used in electric arc steelmaking furnaces, refining furnaces, industrial silicon furnaces, yellow phosphorus furnaces, electric resistance furnaces, etc., as conductive usage. The graphite electrode blank is also used to process a variety of shaped graphite products such as enamel, mold, boat and heating element.

Technical Properties of Graphite Electrodes & Nipples

Item Unit RP Graphite Electrodes

Specific Resistance ≤ Electrodes (E) μΩ.m 8.5

Nipple (N) 8.2

Flexural Strength ≥ Electrodes (E) MPa 9.8

Nipple (N) 13.0

Elastic Modulus ≤ Electrodes (E) GPa 9.3

Nipple (N) 14.0

Bulk Density ≥ Electrodes (E) ɡ/㎝³ 1.58

Nipple (N) 1.63

100-600(C.T.E.) ≤ Electrodes (E) 10-6/℃ 2.9

Nipple (N) 2.7

Ash Content ≤ Electrodes (E) % 0.5

Nipple (N) 0.5

Real Density ≥ Electrodes (E) ɡ/㎝³ 2.18

Nipple (N) 2.2

Allowable Current of Graphite Electrodes

Norminal

Diameter RP Graphite Electrode

Allowable Current

mm in A A/cm2

75 3 1000-1400 22-31

100 4 1500-2400 19-30

130 5.2 2200-3400 17-26

150 6 3000-4500 16-25

175 7 4000-5500 16-22

200 8 500-6900 16-21

225 9 6000-8200 15-20

250 10 7000-10000 14-20

300 12 10000-13000 14-18

350 14 13500-18000 14-18

400 16 18000-23500 14-18

Size & Dviation of Graphite Electrode

(Unit):mm

Norminal

 Diameter Actual Diameters Length

mm in Max. Min. Black Part 

Min. Standard Allow Deviation Allow Ruler 

Deviation

75 3 78 73 72 1000 +/-50 -50

-225

100 4 103 98 97 1200 +/-50 -50

-225

130 5.2 132 127 126 1200 +/-50 -50

-225

150 6 154 149 146 1600 +/-100 -100

-275

175 7 179 174 171 1600 +/-100 -100

-275

200 8 205 200 197 1600 +/-100 -100

-275

225 9 230 225 222 1600 +/-100 -100

-275

250 10 256 251 248 1600/1800 +50/-100 -100

-275

300 12 307 302 299 1600/1800 +/-100 -100

-275

350 14 357 352 349 1600/1800 +/-100 -100

-275

400 16 409 403 400 1600/1800 +/-100 -100

-275