METHOD AND APPARATUS FOR MELTING PRETREATMENT OF SLUDGE

摘要

PROBLEM TO BE SOLVED: To stably introduce granular dry sludge with a constant particle size into a melting furnace. SOLUTION: The dry sludge discharged from a hot air dryer 5 is introduced into a sieve machine 3 to be classified into large particle size dry sludge, medium particle size dry sludge and small particle size dry sludge and the medium particle size dry sludge is introduced into a melting furnace 9 and the large particle size dry sludge is crushed by a crusher 2. This crushed dry sludge, the small particle size dry sludge and a dehydrated sludge cake to be melted are mixed by a mixer 4 and introduced into the hot air dryer 5 to be dried by high temp. gas.