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A technology for recycling plastics and screening methods, applied in plastic recycling, mechanical material recycling, recycling technology, etc., can solve problems such as difficult to improve work efficiency, reduce manufacturing costs and manpower input, reduce labor costs, and prevent air pollution Effect
Inactive Publication Date: 2011-06-01
SEOHUNG & TECH +1
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[0078] Screen out mixed plastics (PET, PP, PE, PS, PVC, etc.) from existing domestic waste, and screen PET, PP, PE, PS for recycling. Since PET, PP, PE and PS cannot be completely screened out in different categories from mixed plastics (PET, PP, PE, PS, PVC, etc.), there are limitations in the use and recycling of recycled plastics.
[0079] The present invention provides a method for screening out PVC from mixed plastics (PET, PP, PE, PS, PVC, etc.) most accurately in order to fully recycle the above-mentioned wasted plastic resources.
[0080] According to the present invention, under the state of power input to each device, when domestic waste flows into the weight sorting machine (11) through the conveyor belt (101), the weight sorting plate (12) sorts the weight in an inclined state. Therefore, foreign matter (sand, sand, etc.) is discharged through the hole (not shown) below the weight sorting plate (12), while most of the heavy things (solid plastics) and light things ...
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Abstract
A selection method for recycling plastic is provided to reuse the plastic mixed in household waste by assorting the plastic from the household waste, and to reduce air pollution by preventing the plastic from burning with other waste. A selection method for recycling plastic comprises the following: a step of assorting water; a step of assorting steel and metals; a step of assorting plastic including PE, PP, PS, and PET by classification using near infrared ray sensor; a step of wind force selection process to assort light plastic; a step of assorting aluminum cans from the selected light plastic; a step of crushing the light plastic; a step of assorting crushed light plastic into PE, PP, PET, and PVC using gravity difference in a water tub; a step of dehydrating the selected PE, PP, PS, PET, and PVC; a step of drying the selected PE, PP, PS, PET, and PVC; and a step of minutely assorting PE, PP, PS, PET, and PVC.
Description
technical field [0001] The invention relates to a method for screening recyclable garbage from domestic garbage except industrial garbage, in particular to a method for separating PE, PP, PS, PET, PVC, vinyl plastics, etc. from domestic garbage. , PP, PS, PET and PVC, vinyl plastics, including the steps of separating vinyl sheets, tapes, sand, sand from domestic waste flowing in through conveyor belts using a gravimetric sorting machine; manually screening out fibers, Cloth, etc.; the step of separating metal cans when the garbage such as tapes and fibers passes through the first magnetic separator; the garbage that separates vinyl sheets, tapes, and ferrous metals is screened out when it passes through a small chamber equipped with a near-infrared sensor The steps of PE, PP, PS, and PET; the step of screening out PE, PP, PS, and PET garbage when passing through the wind screening device due to wind force and screening according to the scattering distance due to the weight dif...
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