Conference Dates

May 16-21, 2010


Solid samples, either of realistic waste model or coal, and spiked with Cd, Pb or Zn, were burned in an electrically-heated fluid bed reactor coupled to a customized ICP spectrometer, for on-line analysis of vaporized metals. For waste samples, a single kinetic law (whatever the metal), predicting the vaporization characteristic time and the time course of the metal concentration in the solid, was obtained. Tests with burning coal samples, spiked with Cd (at 820°C) and Zn (temperature range 680°C to 820°C), proved that this law is still valid, with a slight tendency to underestimation for both Cd and Zn vaporization rates. The transient metal concentration in burning coal was also very well predicted.