WASTE SORTING METHOD, RECYCLED MATERIAL MANUFACTURING METHOD AND PROCESSOR THEREFOR

To provide a waste sorting method which sorts and recovers recycled resources according to recycled resource users from waste containing various kinds of plastics.SOLUTION: A waste sorting method has: a first water tank specific gravity sorting process S7 for sorting and recovering a first water tank floating matter with a specific gravity of less than 1 and a settling first water tank precipitate in a water tank; and a second water tank specific gravity sorting process S8 in which the first water tank precipitate of waste crushed matter, that has been separated and recovered by the first water tank specific gravity sorting process S7, is further separated into a second water tank floating matter floating in a heavy liquid with a specific gravity of more than 1 and a settling second water tank precipitate in the water tank. The first water tank floating matter of the waste crushed matter, which has been generated during separation processing by the first water tank specific gravity sorting process S7, is recovered as "petroleum refining raw material", "naphtha raw material" which become materials for chemical recycling, and the second water tank floating matter of the waste crushed matter, which has been generated during separation processing by the second water tank specific gravity sorting process S8, is recovered as "cement raw fuel", "industrial furnace raw fuel" which become recycled materials for fuel.SELECTED DRAWING: Figure 1 【課題】多種類のプラスチックを含む廃棄物から、リサイクル資源の利用者に応じてリサイクル資源を選別回収する廃棄物の選別方法の提供。【解決手段】水槽において、比重１より小さい、浮遊する第１水槽浮遊物と、沈降する第１水槽沈降物とに分離、回収する第１水槽比重選別工程Ｓ７と、第１水槽比重選別工程Ｓ７により分離回収した廃棄物粉砕物の第１水槽沈降物を、更に水槽において比重１より大きい重液で浮遊する第２水槽浮遊物と、沈降する第２水槽沈降物とに分離、回収する第２水槽比重選別工程Ｓ８とを有し、第１水槽比重選別工程Ｓ７により分離処理した際に生じた廃棄物粉砕物の第１水槽浮遊物は、ケミカルリサイクル用材料となる「石油精製原料」、「ナフサ原料」として回収し、第２水槽比重選別工程Ｓ８により分離処理した際に生じた廃棄物粉砕物の第２水槽浮遊物は、燃料用リサイクル材料となる「セメント原燃料」、「工業炉原燃料」として回収する。【選択図】図１