A regeneration carbon black modification treatment process and device

Abstract

This invention relates to a process and apparatus for modifying recycled carbon black, belonging to the field of material modification processes. The process is characterized by at least three core steps: impurity removal, filtration, and membrane separation. Recycled carbon black is mixed and reacted with an acidic treatment agent with a pH of 1-6 in a stirred tank to remove ash and organic impurities. The resulting slurry is then separated by pressure filtration to obtain sustainable carbon black. The filtrate is then separated by membrane separation to achieve clear liquid reuse and metal ion concentration and recovery. This process can significantly reduce the ash content of recycled carbon black, with an ash removal rate of 50%-80%, increase iodine and oil absorption values, and improve its dispersibility and reinforcing properties in rubber. The process of this invention is characterized by mild conditions, avoiding the use of large amounts of strong acids and alkalis, and achieving solvent recycling. It is suitable for the purification and high-value utilization of various types of recycled carbon black, and has good economic and environmental benefits.

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