Recycling and Utilization of White Carbon Black: Innovative Practice of Circular Economy
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The recycling value of white carbon black in waste tires and silicone products is enormous, but technological bottlenecks persist for a long time:
Thermal decomposition method: Recovering silica through high-temperature cracking, but with lower purity.
Solvent extraction: Using organic solvents to separate rubber and fillers is costly.
Biodegradation: Using enzymatic hydrolysis technology to selectively decompose organic matter and preserve the structure of white carbon black.
Breakthrough case: Langsheng Company in Germany has developed a "chemical regeneration+magnetic separation" process, which recovers white carbon black with a purity of 98% and has been applied in the production of industrial seals.
