公开(公告)号：JPH08229430A

公开(公告)日：1996-09-10

申请号：JP657696

申请日：1996-01-18

Applicant: ABB MANAGEMENT AG

Inventor： MARUKUSU BUYURUGIN ,  BURUUNO KARUSAA ,  ARUFUREETO EDORINGAA ,  JIYANNMARUKU MARUTERI

IPC: B03B9/04 ,  C04B5/00

Abstract: PROBLEM TO BE SOLVED: To make it possible to easily separate a fine fraction, to shut off air from an incinerating chamber, and to cool down the second fraction, by separating a fine fraction containing toxic substances in a dry process, and by further treating a coarse fraction containing little toxic substances in a wet process. SOLUTION: A slag generated on the grate in an incinerator is directly discharged into the first screening stage 3 constituted of a screen-conveyer-type grate. Then, the slag is separated into the fine fraction having a particle size of up to 2 mm and the coarse fraction having a particle size of over 80 mm. The coarse fraction is fed to a wet deslagger (a removing apparatus) 4 which simultaneously shuts off air from the coarse fraction side in the incinerator. The fine fraction is fed to the second screening stage 5 through a screw conveyer 10 and a double flap valve 11, where it is screened. The fraction having a particle size of under 2 mm is fed to a fusion furnace 7, and a fraction having a particle size of over 2 mm is fed to a comminuting stage 6 and is comminuted there. Then, it is fed to a classifying stage 9 and further to the third screening stage 8 and is fed to the fusion furnace 7 after screening.