What is a slow oxide graphite electrode?
Slow Oxidative Graphite electrode is a graphite electrode coated with a protective layer of oxidation resistance (graphite electrode antioxidant).
UHP/HP/RP graphite electrodes can be filled with antioxidant materials in a fixed container, and the electrode is evacuated and pressurized, so that the antioxidant materials can penetrate the surface of the graphite electrode to reduce the degree of oxidation of the graphite electrode. When the electric arc furnace smelts and melts the raw materials, it effectively reduces the consumption of graphite electrodes and saves the cost of the steel plant.
A protective layer that can conduct electricity and resist high temperature oxidation can be formed to reduce electrode consumption (19%-50%) in the process of steel making and extension of polycarbon-graphite electrode.
Slow oxidative graphite electrode technical parameters
Item |
Unit |
RP |
HP |
UHP |
||||
≤∅400 |
≥∅450 |
≤∅400 |
≥∅450 |
≤∅400 |
≥∅450 |
|||
Electric Resistivity |
Electrode |
μΩ*m |
≤8.5 |
≤9.0 |
≤6.0 |
≤6.5 |
≤5.0 |
≤5.5 |
Nipple |
≤6.5 |
≤6.5 |
≤5.5 |
≤5.5 |
≤4.5 |
≤4.5 |
||
Transverse Strength |
Electrode |
MPa |
≥8.0 |
≥7.0 |
≥10.5 |
≥10.5 |
≥15.0 |
≥15.0 |
Nipple |
≥16.0 |
≥16.0 |
≥20.0 |
≥20.0 |
≥22.0 |
≥22.0 |
||
Young’s Modulus |
Electrode |
Gpa |
≤9.3 |
≤12.0 |
≤14.0 |
|||
Nipple |
≤14.0 |
≤16.0 |
≤18.0 |
|||||
Bulk Density |
Electrode |
g/cm3 |
≥1.54 |
≥1.65 |
≥1.68 |
|||
Nipple |
≥1.69 |
≥1.73 |
≥1.76 |
|||||
Coefficient of Termal Expansion (100℃﹣600℃) |
Electrode |
100-6/ |
≤2.5 |
≤2.0 |
≤1.5 |
|||
Nipple |
≤2.0 |
≤1.6 |
≤1.2 |
|||||
Ash |
% |
≤0.3 |
≤0.2 |
≤0.2 |
Slow Oxidative Graphite electrode features:
① Effectively prevent oxidation of graphite electrode surface at 1500℃.
② Reduce graphite electrode consumption by 24% ~ 50%.
③ Increase the service life of electrode by 26% ~ 60%.
Slow oxidative graphite electrode production Process
Application of graphite electrode after oxidation resistance:
1. White fused alumina production factory
2. Brown fused alumina production plant
3. Factory producing zirconium corundum
4. Ferronickel production plant
5. Production of low-carbon Luo iron plant
6. EAF/LF melting scrap in steelmaking plant
http://www.lzcarbon.com/