PROCESS FOR INFLUENCING THE PROPERTIES OF COMBUSTION RESIDUE

摘要

Combustion residues can be partially melted and/or sintered in the combustio n bed of a grate furnace system. By returning the unmelted and/or unsintered combustion residue, a completely sintered inert granulate is obtained. To control these melting an d sintering processes, it is proposed that least one of the following process steps be implemented: -- the residues are returned only as long as, and only in such an amount tha t, the changes thus caused in the essential combustion parameters remain within previously defined tolerance limits; -- the combustion conditions of the combustion process are changed in such a way as to counteract the changes in the combustion parameters produced by the return; -- the material composition of the combustion residue is changed by the retu rn of selected fractions of the combustion residue in such a way that the melting and/or sintering process of the combustion residues is influenced; and -- the material composition of the combustion residue is changed by the addition of additives in such a way that the melting and/or sintering process of the combustion residue is influenced.