Carbon black and pyrolysis

Carbon black

Carbon black is a fine black powder made of carbon. It is used primarily as a reinforcing material in rubber and tire products, but also as a key ingredient in the production of ink, different kinds of plastic, paintings and coatings.

Carbon black is produced from fossil fuels, mainly oil, by incomplete combustion in a controlled environment. The methods by which carbon black is produced depends on the grade and application needed.

Between 1,5 and 2 liters of oil is used to produce 1 kilogram of carbon black.

Recovered carbon black
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Our approach to recycling

Instead of producing new carbon black from oil, it can be recovered from end-of-life tires (ELT), as ELT contain up to 30% of carbon black. The carbon black is recovered through pyrolysis, where the ELT are heated in an oxygen-free environment thereby separated into oil, gas, steel and carbon black.

The plant will be able to use the recovered gas and part of the oil for its operation, making the plant self-sufficient in thermal energy.

The surplus heat created from the process will be delivered to the district heating network. The oil, which partly comes from natural rubber, will be sold as a bio-oil, and the steel and carbon black will be sold for recycling in new products.

The recovered Carbon Black (rCB), will consist of the same grades already present in the ELT. The pyrolysis process does not change the grade, the quality of the rCB will be comparable to newly produced carbon black and can therefore be used as a full replacement in several applications.