Furnaces – Process – Treating fuel constituent or combustion product
Patent
1995-12-07
1997-09-30
Bennett, Henry A.
Furnaces
Process
Treating fuel constituent or combustion product
241 19, 210695, F23J 300
Patent
active
056716885
ABSTRACT:
In the process for treating slag from refuse incineration plants, the crude slag, after passing through the firing grate, is separated into at least two fractions directly and without previous quenching in a water bath. These two fractions are further processed separately, the coarse fraction being fed to a wet deslagger. For optimum separation of the two fractions, the first fraction, having a particle size preferably up to 32 mm, is separated off in a first screening stage and the screen oversize of the first screening stage is fed to the wet deslagging. The screen undersize and if appropriate the material passing through the firing grate are fed to a second screening stage to separate off the fine fraction 0 . . . 2 mm. The screen oversize of the second screening stage, if appropriate after removing metallic and inert materials, is mechanically comminuted. In an optional third screening stage (8), the fine fraction 0 . . . 2 mm is fed together with the screen undersize of the second screening stage to a special treatment.
REFERENCES:
patent: 5051190 (1991-09-01), Schwyter
patent: 5143304 (1992-09-01), Schwyter
patent: 5356082 (1994-10-01), Prinz et al.
Burgin Markus
Carcer Bruno
Edlinger Alfred
Martelli Jean-Marc
Asea Brown Boveri AG
Bennett Henry A.
O'Connor Pamela A.
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