Abstract
This research investigated treatment of crude carbon
black produced from pyrolysis of waste tyres in order to evaluate its
quality and possible industrial applications. A representative sample
of crude carbon black was dry screened to determine the initial
particle size distribution. This was followed by pulverizing the crude
carbon black and leaching in hot concentrated sulphuric acid for the
removal of heavy metals and other contaminants. Analysis of the
refined carbon black showed a significant improvement of the
product quality compared to crude carbon black. It was discovered
that refined carbon black can be further classified into multiple high
value products for various industrial applications such as filler, paint
pigment, activated carbon and fuel briquettes.