The manufacturing process of carbon electrode paste involves the careful selection of high-quality raw materials, primarily petroleum coke and coal tar pitch. These materials are chosen for their purity, carbon content, and specific characteristics. The selected components are blended in precise proportions, creating a homogeneous paste.
The mixing stage is followed by kneading, where the paste is shaped into a consistent and workable form. The next step involves extrusion or vibration molding to produce the desired shape and size of the electrode paste. This formed paste undergoes baking or calcination at elevated temperatures, typically exceeding 1000 degrees Celsius, to ensure the removal of volatile components and enhance the final product's mechanical strength and electrical conductivity.
The final electrode paste is then packaged for use in various industrial applications, including electric arc furnaces in steelmaking and other processes requiring a reliable and conductive carbon source. The entire manufacturing process is designed to produce a high-quality carbon electrode paste tailored to meet specific industrial requirements.
Product Parameters
|
Item |
Electrode Paste |
||
|
Si |
<0.28% |
Fe |
<0.25% |
|
P |
<0.004% |
|
|
|
Ash Content |
2-10% |
Resistivity |
55-90 uΩm |
|
V.M |
10.0-15.0% |
Density |
>1.46g/cm3 |
|
Compression Strength |
>18Mpa |
Extensibility |
6-20 |
|
Apparent Density |
>1.42g/cm3 |
Rupture Strength |
>4.0 |
|
Real Density |
>1.98g/cm3 |
Fluidity Coefficient |
1.10-2.10 |
|
|
Unit |
Sealed Paste |
Standard Electrode Paste |
|
|||
|
No.1 |
No.2 |
No.1 |
No.2 |
No.3 |
|||
|
Ash |
% |
4.0 |
6.0 |
7.0 |
9.0 |
11.0 |
11.0 |
|
Volatile Flux |
% |
12.0-15.5 |
12.0-15.5 |
9.5-13.5 |
11.5-15.5 |
11.5-15.5 |
11.0-15.5 |
|
Compressive Strength |
Mpa |
18.0 |
17.0 |
22.0 |
21.0 |
20.0 |
18.0 |
|
Resistivity |
uΩm |
65 |
75 |
80 |
85 |
90 |
90 |
|
Volume Density |
g/cm3 |
1.38 |
1.38 |
1.38 |
1.38 |
1.38 |
1.38 |
|
Elongation |
% |
5-20 |
5-20 |
5-30 |
15-40 |
15-40 |
5-25 |