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According to reports, this method is used in isolation from air conditions. The first step is to pyrolyze used tires at a high temperature of 800°C to obtain a mixture of carbon black, steel wire, and white carbon black; after magnetic separation, screening, and baking, semi-pure carbon powders are obtained; then semi-pure carbon is washed separately with hydrochloric acid and sodium hydroxide. Powder, carbon black for black printing ink can be obtained.
This high-temperature pyrolysis process does not emit carbon dioxide gas compared to the conventional furnace black process.
British Successfully Uses Waste Tire to Extract Carbon Black
A few days ago, three British inventors successfully extracted carbon black from used tires. This carbon black can be used as a substitute for coloring specialty carbon blacks for printing inks, and is inexpensive.