Investigation of the process of grinding of a char coal obtained from tires waste pyrolysis

摘要

The paper contains results of examinations of grinding of char obtained from waste car tires.The grinding of the char was conducted in a laboratory vibratory mill of low vibration frequency.The examinations concerned the possibility of using a char as raw material in industry,particularly as a substitute for carbon black applied for the production of rubber.One of the basic parameters characterizing carbon black is particle size distribution as well as specific surface area.In the examinations,the char was obtained with following characteristic sizes of particles: d_(50)= 2.5 ÷ 9.3 μm,d_(90)= 13.3 ÷ 35.0 μm and specific surface area 74 ÷ 163 m~2/g matching the particle size distribution and specific surface area characteristic of carbon black,which means that in order to grind a char,the vibratory mill can be used.