EXTRACTION OF CARBON BLACK FROM THE COCONUT SHELL
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by
Rahul Karmankar
Abstract
This papers show the carbon black and its manufacturing process. Carbon black is produced by the incomplete combustion of hydrocarbon or thermal cracking. The blacks falls into three groups by method of manufacture: (1) channel (2) furnace, and (3) thermal. The average particle size of blacks range from about 15 to 275 milli-microns. The finest black are channel blacks and coarsest are the thermal blacks, but there is some overlapping of the furnace blacks at both ends. Carbon blacks are not pure carbon but contain varying amounts of hydrogen and oxygen. The principal effect of this non-carbon material seems to be on the surface characteristics, specially the pH. The channel blacks are acid, while furnace blacks and thermal blacks are neutral or alkaline. The acid blacks are slower curing and generally require more accelerator for good cure. As a group, the carbon blacks have probably received the greatest amount of study both as to method of manufacture Carbonization (or carbonization) is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. The soot of a natural gas flame, used in paints; is fine carbon. Also called channel black.
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