Scrap tyre recycling process with molten zinc as direct heat transfer and solids separation fluid: A new reactor concept
Sousa-Gallagher, Maria J.
Every year about 1.5 billion tyres are discarded worldwide representing a large amount of solid waste, but also a largely untapped source of raw materials. The objective of the method was to prove the concept of a novel scrap tyre recycling process which uses molten zinc as the direct heat transfer fluid and, simultaneously, uses this media to separate the solids products (i.e. steel and rCB) in a sink-float separation at an operating temperature of 450–470 °C. This methodology involved: construction of the laboratory scale batch reactor, separation of floating rCB from the zinc, recovery of the steel from the bottom of the reactor following pyrolysis.
Tyre pyrolysis , Molten metal , Direct heat transfer , Sink-float separation
Riedewald, F., Goode, K., Sexton, A. and Sousa-Gallagher, M. J. (2016) 'Scrap tyre recycling process with molten zinc as direct heat transfer and solids separation fluid: A new reactor concept', MethodsX, 3, pp. 399-406. doi:10.1016/j.mex.2016.05.003