SAMPLING METHOD AND SAMPLING DEVICE OF RECYCLED RAW MATERIAL, ANALYSIS SAMPLE OF RECYCLED RAW MATERIAL, AND EVALUATION METHOD OF RECYCLED RAW MATERIAL

摘要

A method including: a step (S3) in which recycled raw materials are primarily crushed; steps (S4 to S7) in which the primarily crushed raw materials are separated into three kinds, i.e., "Fe scraps", "Al scraps", and "recycled raw materials other than Fe and Al scraps", and primary reduction is conducted; steps (S8 to S10) in which the "recycled raw materials other than Fe and Al scraps" after the primary reduction are secondarily crushed to conduct secondary reduction; and a mixing step (S12) in which the "Fe scraps" and "Al scraps" are mixed with the "recycled raw materials other than Fe and Al scraps" which have undergone the secondary reduction, in a mixing ratio that corresponds to the weight ratio of the three kinds, i.e., "Fe scraps", "Al scraps", and "recycled raw materials other than Fe and Al scraps". The mixture obtained in the mixing step is used as a sample to be analyzed.