There is also an inextricable link between pigmented carbon black and gases
To get high quality pigmented carbon black, it is necessary to fully contact the oxygen in the air during the production process of carbon black, so that the surface of carbon black can be fully combined with oxygen, followed by rapid oxidation by oxygen molecules to get pigmented carbon black with higher blackness, better color and better dispersion. As for how to combine carbon black with oxygen in the air quickly, this is a very professional issue, in which two important points are to choose good carbon black production equipment, followed by the oxygen content in the air.
The method of making carbon black fully combined with oxygen.
The raw material hydrocarbon (antiseptic oil as raw material is also possible) is first vaporized when heated and then brought to the burner by the spontaneously combustible gas (supplied with energy) as a carrier, and the carbon black is generated in a large number of fan-shaped flames emitted by these bat-shaped burners. Because each flame is small and burns in air, the formation of carbon black is very different from the lamp black production process (incomplete combustion). On the burning flame is a slowly rotating water-filled drum on which the carbon black is deposited and then scraped away by a scraper, and when the temperature is still high, the newly generated carbon black comes into contact with oxygen in the air, whereupon partial oxidation occurs and a large number of acidic groups are formed, with the corresponding gas black The PH value is in the acidic range. And about 6% of volatile content is obtained, representing its surface oxide content.
Due to the formation of mixed gas pigment carbon black after oxygen oxidation, good dispersion performance, high blackness, so it is often used in the quality inspection of more stringent high-tech industries, high-quality products corresponding to its price is not cheap, the market price of mixed gas carbon black is generally about 10,000 yuan per ton
