Coal coke asphalt
Coal coke asphalt
Coal coke asphalt (modified asphalt)
is the residue in the deep processing of coal tar. It is a black solid or semi-solid material obtained by coal tar distillation (300~400℃).
Coal coke asphalt, a premium-grade carbonaceous material derived from coal tar distillation (300-400℃), serves as a critical component in multiple industrial applications. This black semi-solid material contains high concentrations of polycyclic aromatic hydrocarbons (PAHs), granting exceptional bonding strength, thermal stability, and chemical resistance properties.
Superior Adhesion: β resin content ≥18% ensures optimal binding capacity for electrode manufacturing and refractory materials
High Coking Value: ≥50% coking yield forms durable carbon matrices under extreme temperatures
Chemical Resistance: Withstands acid, alkali, and organic solvent exposure in harsh industrial environments
Temperature Adaptability: Adjustable softening point range (60-180℃) for specialized applications
Primary Utilization Areas:
Aluminum Production: As the principal binder in cathode paste formulations for electrolytic cells operating at 950-1000℃
Graphite Electrodes: Essential bonding agent for ultra-high power (UHP) electrode production, demonstrating 12-15% lower electrical resistivity than standard binders
Waterproofing Systems: Core component in coal tar-based membrane systems (ASTM D2626/D2626M standard) with 98% water impermeability
Advanced Material Processing:
Needle Coke Production: High-quality feedstock for premium-grade needle coke with CTE values below 1.0×10⁻⁶/℃
Carbon Fiber Precursors: Modified coal coke asphalt yields carbon fibers with tensile strength exceeding 3.5 GPa
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