needle coke
Needle Coke Data Sheet
| Needle Coke Data Sheet | ||||||||
| Item | Real density | Sulfur | Ash | V.M. | Moisture | Grain Strength | Vibrated bulk density | Coefficient of thermal expansion (CTE) |
| Unit | g/cm³ | % | % | % | % | % | g/cm³ | 10-6/℃ |
| 1# | ≥2.13 | ≤0.50 | ≤0.1 | ≤0.35 | ≤0.1 | ≥25 | ≥0.90 | 1.0-1.1 |
| 2# | ≥2.13 | ≤0.50 | ≤0.1 | ≤0.35 | ≤0.1 | ≥25 | ≥0.90 | 1.0-1.1 |
| 3# | ≥2.13 | ≤0.50 | ≤0.1 | ≤0.35 | ≤0.1 | ≥25 | ≥0.90 | 1.0-1.1 |
| 4# | ≥2.13 | ≤0.50 | ≤0.1 | ≤0.35 | ≤0.1 | ≥25 | ≥0.90 | 1.0-1.1 |
| needle coke for nipple | ≥2.135 | ≤0.45 | ≤0.1 | ≤0.35 | ≤0.1 | ≥30 | ≥0.92 | ≤1.05 |
| Calcined needle coke for negative material | ≥2.13 | ≤0.50 | ≤0.1 | ≤0.4 | ≤0.1 | / | / | / |
| Green needle coke for negative material | ≥1.4 | ≤0.52 | ≤0.15 | ≤4-8 | ≤6 | / | / | / |
Product Description：
Needle coke is the main raw material for making advanced graphite electrodes. According to different raw materials, it is divided into two types: oil series and coal series. Needle coke produced from petroleum heavy oil as raw material is the oil system, and needle coke produced from coal tar pitch and its fractions as raw material is the coal system. The production processes of the two needle cokes are not exactly the same, but their uses are basically the same.
Application range：
Needle coke is widely used in electric furnace steelmaking, nuclear reactor deceleration materials and ultra-high-power electrodes for rocket launches. Needle coke is a high-quality material for manufacturing high-power and ultra-high-power electrodes. It is made of needle coke Graphite electrodes have the advantages of strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and large allowable current density.
