Solid material comminution or disintegration – Processes – Selective or differential comminution of mixed or bonded solids
Patent
1987-11-03
1989-03-28
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
Selective or differential comminution of mixed or bonded solids
241 24, 241 76, 241 791, 241 81, 241142, 241198A, 241240, 241289, 241DIG38, B02C 2100
Patent
active
048156671
ABSTRACT:
The present invention pertains to a system and a method for recovering salvageable ferrous and non-ferrous materials from incinerated waste materials including friable, carbonaceous incineration byproducts such as ash and associated ferrous and non-ferrous metal components. The system includes at least one crushing means for selectively comminuting friable material comprised of a rotating roll having at least one protrusion, preferably a weld extending transversely to the direction of rotation of roll, on its exterior cylindrical surfaces in spaced relation to a backing plate. The backing plate is urged toward the roll by a bias means exerted a preferably adjustable pressure sufficient to comminute the friable carbonaceous material to a desired size, and insufficient so as to permit the backing plate to retract and allow passage of ferrous and non-ferrous components in the waste material through the crushing means substantially uncomminuted. The bias means tends to rapidly urge the retracted backing plate to its set position and exert a selective comminution pressure through the retraction cycle. At last a first separating means coacts with the first crushing means for at least partially separating comminuted carbonaceous incineration byproducts from ferrous and non-ferrous metal components; and first magnetic means separates ferrous metal components from the waste material. The present invention further relates to a novel crusher for selectively comminuting friable materials without substantially comminuting associated malleable materials.
REFERENCES:
patent: 1357015 (1920-10-01), Whitney
patent: 1783373 (1930-12-01), Borton
patent: 3086718 (1963-04-01), Lukas
patent: 4044956 (1977-08-01), Benedetto et al.
patent: 4288039 (1981-09-01), Waskow
patent: 4406412 (1983-09-01), Alexandersson
Rosenbaum Mark
Shaneway, Inc.
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