Wholesale Discount Graphite Electrode For Electrolysis - 400 UHP graphite electrode – Hexi
Wholesale Discount Graphite Electrode For Electrolysis - 400 UHP graphite electrode – Hexi Detail:
Graphite electrodes are mainly used in the steelmaking process. Iron scrap gets melted in an electric arc furnace and recycled. As a kind of conductor, they are an essential component in this kind of
UHP graphite electrode is mainly made up of high-quality needle coke，and widely used in ultra high power electric arc furnaces.It is capable of carrying the current density more than 25A/cm2
| Standard for ultra high power graphite electrodes and connectors | |||||
|
items |
unit |
nominal diameter（mm） |
|||
|
250～400 |
450～550 |
600～700 |
|||
|
specific resistance |
electrode nipple |
μ Ω•m |
4.8～5.8 3.4～4.0 |
4.5～5.6 3.4～3.8 |
4.5～5.4 3.0～3.6 |
|
transverse strength |
electrode nipple |
MPa |
≥12.0 ≥22.0 |
≥12.0 ≥22.0 |
≥10.0 ≥24.0 |
|
elastic modulus |
electrode nipple |
GPa |
≤13.0 ≤18.0 |
≤13.0 ≤18.0 |
≤13.0 ≤20.0 |
|
ash content |
electrode nipple |
% |
≤0.2 |
≤0.2 |
≤0.2 |
|
bulk density |
electrode nipple |
g/m³ |
1.68～1.73 1.78～1.84 |
1.68～1.72 1.78～1.84 |
1.68～1.72 1.80～1.86 |
|
C.T.E) |
electrode nipple |
10℃ |
≤1.2 ≤1.0 |
≤1.2 ≤1.0 |
≤1.2 ≤1.0 |
Manufacturing process
Graphite electrode is mainly made of petroleum coke and needle coke, mixed with coal pitch, getting through processes of calcinations, kneading, forming, baking, graphitizing and machining, finally to be products. Here are some explanations for some production process:
Kneading: Stirring and mixing a certain amount of carbon particles and powder with a certain amount of binder at a certain temperature, this process is called kneading.
The function of kneading
①Mix all kinds of raw materials evenly, and at the same time make solid carbon materials of different particle sizes uniformly mix and fill, and improve the density of the mixture;
②After adding coal asphalt, get all material firmly together.
③Some coal pitches penetrate into the internal voids, which further improves the density and adhesion of the paste.
Forming: The kneaded carbon paste is extruded into a green body (or green product) with a certain shape, size, density and strength in a molding equipment. The paste has a plastic deformation under the external force.
Roasting also called baking, It is a high temperature treatment, making the coal pitch carbonized to coke formed, which consolidate the carbonaceous aggregates and powder particles together with high mechanical strength, lower resistivity, better thermal stability and chemical stability.
Secondary roasting is to bake one more time, making the penetrating pitch carbonized . Electrodes (all types except RP) and nipples that require higher bulk density are required to be second-baked, and nipples three-dip four-bake or two-dip three-bake.
Product detail pictures:
Related Product Guide:
We emphasize advancement and introduce new products into the market each year for Wholesale Discount Graphite Electrode For Electrolysis - 400 UHP graphite electrode – Hexi, The product will supply to all over the world, such as: Nepal, Germany, Danish, We are your reliable partner in international markets with the best quality products. Our advantages are innovation, flexibility and reliability which have been built during the last twenty years. We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sales and after-sales service ensures strong competitiveness in an increasingly globalized market.
By Althea from Luxembourg - 2018.06.21 17:11
On this website, product categories is clear and rich, I can find the product I want very quickly and easily, this is really very good!
By Natalie from Saudi Arabia - 2017.06.22 12:49
