临漳县三能石墨材料有限公司

18in超高功率石墨电极

18in超高功率石墨电极

产品详情

 A, Product Information;

 1. Product name:    18″ U H P graphite electrode                     

  2. Specifications: DIA.450mm*1800/2100/2400

  3. Product origin: China

 4.product raw materials: Petroleum coke and 70% needle coke

  5.Product packaging: Export wooden box packaging

  6. Trade TermsFOB; FCA; DAP; CFR; CPT; CIF

   7. Product price:FOB Tianjin  $1700-$2300 / Metric Ton

  8 .payment methods: L/C; T/T;  D/P or CAD

    9. supply quantity: 1500  Metric Tons / Month

 10.HS Code: 854511

  B. product introduction;

Sanneng Carbon Co., Ltd., graphite electrode (factory one) produces 18 in UHP graphite electrode  ,70% of the production cost of graphite electrode comes from raw materials, mainly petroleum coke and needle coke. It is made through a series of complex processes with coal asphalt as binder. Petroleum coke is the combustible solid obtained from petroleum residue and petroleum pitch after coking. Petroleum coke is a kind of easy graphitized carbon and is the main raw material for producing graphite products. Roasting stage

The thermal stability, mechanical strength and electrical conductivity of the materials can be greatly improved by roasting. The coking of coal asphalt inside the green billet results in the discharge of about 10% volatiles and the volume shrinkage of 2-3% and the mass loss of 8-10%. The physical and chemical properties of the electrode are also improved, the volume density is reduced from 1.70g/cm3 to 1.60g/cm3, the resistivity is reduced from 10000U2.m to 4050us2.m, and the mechanical strength of the electrode is also improved.

Secondary roasting refers to the roasting of roasted products after impregnation to carbonize asphalt immersed in the pores of the roasted products. For the electrode with high volume density  and the joint, the joint billet should be baked three times or two times. Baking furnace mainly furnace type: continuous operation - ring furnace (with cover, not with cover), intermittent operation - down-draft kiln, tunnel kiln car type furnace, box-type furnace roasting curve and the maximum temperature: a roasting - 320, 360, 422, 480 hours, 1250  second burn - 125.240, 280 hours, 700-800  roasting product inspection: appearance struck, resistivity, volume density, Needle coke is a kind of high quality coke with fibrous texture, low coefficient of thermal expansion and easy graphitization. The physical and mechanical anisotropy of needle coke is very obvious, and it has good conductivity and heat conduction performance. Therefore, needle coke is a key material for manufacturing high power or ultra high power graphite electrode. In addition, needle coke can be divided into needle coke of oil residue and needle coke of coal measure produced from raw material of refined coal pitch.


18 in UHP graphite electrode Used in EAF and LF for steel making, as well as in electric smelting furnace for producing industrial silicon, phosphorus, etc

We can provide more consulting services and more graphite electrode use technology

Welcome all customers to consult, we discuss better cooperation methods for graphite electrodes 

C. index


Items

 

Unit

 

Electrode

 

Nipples

size

Inch/mm

18″dia450

4TP/4TPN

Resistivity(≤)

 

μΩm

5.5

3.5

Bulk Density (≥)

 

g/cm3

1.72

1.83

Bending Strength (≥)

Mpa

11

16

 

Elastic Modulus (≤)

GPa

12

 

16

C.T.E.(≤)
(100-600°C)

x10-6/℃

1.8

1.2

Ash

%

0.3

0.2

Current Density

Current-Load

A

32000-48000

29-28(A/ cm3)