Improvement of the preparing aggregates process on cyclic type asphalt plants using exhaust gas during hot-mix asphalt production

Na asfaltnoj bazi koristi se izuzetna količina energije prilikom proizvodnje vrućih asfaltnih mješavina. Kako se dio energije ispušta u atmosferu ideja prikazana u ovom radu je da tu energiju pretvorimo u zatvoreni ciklus proizvodnje. Stoga se kosa traka na asfaltnoj bazi mijenja s trakastom sušarom. Pomoću laboratorijskog modela segmenta trakaste sušare provedena su mjerenja. Kao ulazni parametri korišteni su vrijeme, temperatura i brzina strujanja zraka. Na različitim frakcijama agregata obavljena su mjerenja koliko je vlažnosti izgubila koja frakcija agregata. Matematičkim analizama dobivene su jednadžbe ponašanja sušenja agregata pod zadanim uvjetima. Jednadžbama je definiran model sušenja agregata. Također je ispitivan i utjecaj prionjivosti bitumena i agregata s ispušnim plinom.Exceptional amount of energy is used on the asphalt plant when producing hot asphalt mixtures. As part of the energy is released into the atmosphere, the idea presented in this paper is to turn this energy into a closed cycle of production. Therefore, the belt conveyor on the asphalt plant changes with a belt conveyor drying chamber. Measurements were made using a laboratory model of the belt conveyor drying chamber segment. The input parameters used were time, temperature and air flow rate. Different aggregate fractions performed measurements of how much moisture the aggregate fraction lost. Mathematical analyzes yielded aggregate drying behavior equations under the given conditions. The equations have a model for drying the aggregates. The impact of bituminous aggregates and exhaust gas aggregates has also been investigated