Solid material comminution or disintegration – Processes – With classifying or separating of material
Patent
1997-04-10
1999-03-30
Husar, John M.
Solid material comminution or disintegration
Processes
With classifying or separating of material
241 2418, 241 791, 2411522, 241DIG38, B02C 1900, B02C 1912
Patent
active
058878050
ABSTRACT:
Preferred processes to separate metallic and non-metallic constituent components of at least one electronic product are generally comprised of the following steps: (a) repeatedly crushing the at least one electronic product to create a plurality of crushed electronic components; (b) repeatedly screening the plurality of crushed electronic components to ensure that the plurality of crushed electronic components substantially conform to a specific size; and (c) separating the plurality of crushed electronic components after steps (a) and (b) into non-metallic constituent components and metallic constituent components by weight. In addition, before step (a), the at least one electronic product must be provided or otherwise transported to crushing machines to perform step (a). Likewise, the crushed electronic components must be transported from one crushing machine to another crushing machine and to the separating apparatus to perform step (c). At least three crushing machines are generally used, so that the at least one electronic product are generally crushed at least three times (and transported between the crushing machines). The crushed electronic products are also periodically screened, such as after each crushing step to limit the size of the crushed materials in the stream of crushed materials being evaluated. Lightweight material is also removed from the stream of crushed materials by at least one air separator. Portions of the light weight material that comprise metallic material are returned to the stream of crushed material. Portions of lightweight material substantially comprised of non-metallic materials (i.e., dust) is transported to a collection apparatus. The products can be shredded before step (a).
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Burke R. Darryl
Husar John M.
Resource Concepts, Inc.
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