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Needle Coke-Grade Graphitized Petroleum Coke
Needle coke-grade graphitized petroleum coke is a high-quality raw material used in the production of high-performance graphite electrodes for the steel and aluminum industries. The term "needle co...
DESCRIPTION
Needle coke-grade graphitized petroleum coke is a high-quality raw material used in the production of high-performance graphite electrodes for the steel and aluminum industries. The term “needle coke” refers to a specific type of petroleum coke that is characterized by its unique physical structure, which resembles a series of interconnected needles.
The production of needle coke-grade graphitized petroleum coke involves a complex process that starts with the selection of high-quality raw materials, including low-sulfur, low-nitrogen petroleum coke. The coke is then calcined at high temperatures to remove the volatile components and increase the carbon content. The resulting coke is then graphitized through a high-temperature process that converts the carbon to graphite.
The use of needle coke-grade graphitized petroleum coke in the production of graphite electrodes offers several advantages. First, the unique physical structure of needle coke provides superior strength and thermal conductivity, which is essential for the high-temperature and high-stress environments encountered in steel and aluminum production. Second, the graphitization process improves the purity of the coke, resulting in better performance and longer electrode life. Finally, needle coke-grade graphitized petroleum coke has a low sulfur and ash content, which reduces the potential for impurities and contamination in the electrode material.
| Property | Value |
|---|---|
| Fixed Carbon | 98.5% min. |
| Sulphur | 0.05% max. |
| Nitrogen | 0.03% max. |
| Ash | 0.5% max. |
| Volatile Matter | 0.5% max. |
| Moisture | 0.5% max. |
| Real Density | 2.22-2.25 g/cm³ |
| Electrical Resistivity | 4.5-6.0 µΩm |
| CTE | 1.2-2.0 x 10^-6/°C |
| Young’s Modulus | 10,000-16,000 MPa |
| Particle Size | 0-1mm, 0-5mm, 1-5mm, or as per customer requirements |
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