The more emphasized tendency to use alternative fuels along with the traditional ones in clinkering plants raises a series of problems regarding technological, thermo-technical, economical and environmental issues. Whereas technological and economical aspects are mostly established, from the thermo-technical point of view, not all changes that occur in a clinkering plant when one fuel is replaced by another one have been studied yet.

In present article, the second from a series of four, it is emphasized the way that certain thermo-technical parameters influence the flow and chemical composition of the hot gases exhausted into the atmosphere. The thermo-technical parameters that were taken into account were: absolute productivity, theoretical temperature, dissociation degree of some components of the hot gases and coefficient of air in excess used for the combustion.