Double screen for waste matter

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PURPOSE : A dual screening apparatus is provided to improve amount of crushed material screened and reuse constructional waste material depending on property and particle size applied in restructuring sites. CONSTITUTION : The apparatus comprises a top screen(1) located at determined angle to bottom end of output side of a top conveyor(3); a bottom screen(2) located at further determined angle lower than the top screen(1) and connected to output side of the top screen(1); a bottom conveyor(4) mounted at bottom ends of the top and bottom screens(1, 2); and a conveyor(5) mounted at bottom end of the output side of the bottom screen(2) to transfer waste materials passed through the top and bottom screens(1, 2).