Pyrolysis of Tires
“The pyrolysis method for recycling of used tires is an innovation technique that uses a special mechanism to heat the used tires in a closed, oxygen-free environment – a stove to melt down the tires into the materials that they were made of. There are many different ways to achieve the melting procedure. For a long time, external heating methods were used. Recently an electro–magnetic field technology was developed by Coral group, in Dnepropetrovsk, Ukraine. This method produces carbon, metal, gas and artificial oil as by-products of the recycling process. The quality of these by-products depends on the heating technique used, with simple outside heating techniques producing heavy oils (mazut); however, newer techniques that produce a “softer” pyrolysis produce by-products such as benzene, kerosene and diesel.” (Wikipedia, Pyrolysis of Tires, 6/28/2011)
Recent Journal Articles
Silica Obtained Via Pyrolysis of Waste ‘Green’ Tyres - A Filler for Tyre Tread Rubber Blends
(303-316) Journal of Elastomers and Plastics 43 #4 (2011)
Abstract
Ivanov and Mihaylov of the University of Chemical Technology and Metallurgy, Bulgaria, pyrolyzed treads of green tires to produce SiO2D cum-water vapor. It has been found by IR-FTIR and EDXRF spectroscopy that the product contains 65% of SiO2, 30% of carbon, 3% of ZnO, and 2% of other components. Differences have been established neither in the mechanical properties (Modulus 300, tensile strength, abrasion, etc.) nor in the dynamic properties (heat build-up, tan δ, etc.) of the vulcanizates filled with SiO2D and of those filled with conventional SiO2 and carbon black at a 2 : 1 ratio. The size of SiO2D particles has been found to be the same as that of conventional SiO2. Their distribution in the rubber matrix also does not differ. (RDC 6/27/2011)