Carbon black grinding machine

Carbon black grinding machine

Carbon Black Pulverizer Manufacturers ZENITH is one of the largest carbon black pulverizer manufacturers in China and our carbon black [...]

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Carbon Black Pulverizer Manufacturers

ZENITH is one of the largest carbon black pulverizer manufacturers in China and our carbon black pulverizer have been sold to Germany, India, South Africa, Kenya, Algeria, Egypt, Ghana, Zimbabwe, Iran, Chile, Malaysia, Philippines, Sri Lanka, UAE, Zambia, Vietnam, Venezuela, Canada, Bolivia, Ecuador, etc. If you have any need, please contact us directly through #8220;Online Chat System#8221; in the website to get immediately response for free.

Carbon Black Pulverizer

Activated carbons were produced from waste tires using a chemical activation method. The carbon production process consisted of potassium hydroxide (KOH) impregnation followed by pyrolysis in N2 at 600–900 °C for 0–2 hr. The activation method can produce carbons with a surface area (SA) and total pore volume as high as 470 m2/g and 0.57 cm3/g, respectively. The influence of different parameters during chemical activation, such as pyrolysis temperature, holding time, and KOH/tire ratio, on the carbon yield and the surface characteristics was explored, and the optimum preparation conditions were recommended. The pore volume of the resulting carbons generally increases with the extent of carbon gasified by KOH and its derivatives, whereas the SA increases with degree of gasification to reach a maximum value, and then decreases upon further gasification.

Carbon Characterization

Specific SAs and pore volumes of the activated samples were determined by gas adsorption. An automated adsorption apparatus (Micromeritics, ASAP 2010) was employed for these measurements. Adsorption of N2 was performed at –196 °C. Before any such analysis, the sample was degassed at 300 °C in a vacuum at ~10 –3 Torr. Nitrogen SAs and micropore volumes of the samples were determined from the application of the BET and Dubinin-Radushkevich (D-R) equations, 15 respectively, to adsorption isotherms at relative pressures between 0.06 and 0.2. The amount of N2 adsorbed at pressures near unity corresponds to the total amount adsorbed at both micropores and mesopores; consequently, the subtraction of the micropore volume (from the D-R equation) from the total amount (determined to be p/p 0 = 0.98 in this case) will provide the volume of the mesopores. 16 Although this procedure of determining the mesopore volume is justifiable only if the isotherm is typical of type IV, which has a distinct plateau at high p/p 0, 17 it still provides a rough estimation of pore-size distribution of different samples. If the pores are assumed to be parallel and cylindrical, the average pore diameter would have a value of 4V/BET, where V is the total pore volume and BET represents the SA. 15 A scanning electron microscope (Jeol, JXA-840) was used to study the structural features of the carbon surface.