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What is the use of cracked carbon black after deep processing?

2024-07-18

Tire cracking is currently a more effective way to recycle rubber resources. As one of the cracking products, cracked carbon black accounts for about 30%-35% of the entire cracking product, but it is far behind commodity carbon black in composition and reinforcement effect. If it is not well utilized, it will not only waste resources but also cause secondary environmental pollution!

Untreated crude carbon black:

① Carbon black coarse powder is mixed with coal powder to make boiler fuel, which has extremely low value and excessive sulfur content emissions. It has been banned due to environmental impact.

② Adding clay and water to make charcoal blocks for combustion has also been banned.

The deep processing of cracked carbon black after deep processing has broad prospects for high-value utilization and a huge market! The uses are as follows:

① The rubber industry replaces some commodity carbon blacks such as N330, N550, N660, N754, and N774 as fillers.

② The plastic industry uses it as plastic masterbatch, which is used for EVA foaming, PE blown film, plastic modules, etc., to reduce the cost of commodity carbon black and enhance the high chromaticity visual impression.

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③ As a pigment for offset printing ink, it can greatly improve the dispersibility, fluidity, brightness, blackness and other properties of the ink.

④ Replace some wood-based and coal-based activated carbon in the fields of sewage purification, environmental protection, and medical and health.

⑤ As an inorganic filler, it is used as a road asphalt modification reinforcing agent to improve the performance of the road surface, especially suitable for strong ultraviolet radiation areas such as the western plateau (such as Qinghai and Tibet).

After deep processing, it can not only increase the profit of the waste tire pyrolysis industry, but also greatly reduce the cost of some downstream application markets! Therefore, the deep processing technology of pyrolysis carbon black in the reuse of waste tire pyrolysis carbon black is particularly important!

The preparation of waste tire pyrolysis carbon black is completely different from that of commercial carbon black. To a certain extent, it needs to undergo a series of deep processing to replace some commercial carbon black to achieve its certain performance. The main processes include steel wire deep magnetic separation, ultraFine Grinding, coupling agent modification, wet granulation, drying and packaging. If necessary, according to the different tire sources and the previous preparation process, combined with the downstream application technology requirements, acid and alkali ash removal treatment is also required.

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