Discarded tires can be extracted carbon black

Recently, the United Kingdom 3 inventors from discarded tires to extract carbon black. This black color printing ink can be used as a substitute for special carbon black, low prices. This method is in the air under the conditions of isolation, at 800 ℃ high temperature pyrolysis of used tires, to be black, white and black wire, and other mixtures, magnetic separation, after the screening of baking, a system of semi-pure powder. Hydrochloric acid and sodium hydroxide were then washed and a half of pure powder, black can be printed with black ink. Compared with traditional furnace method of carbon black production process, this high-temperature pyrolysis process, not emissions of carbon dioxide gas.