Sampling method and sampling device of recycled raw material, analysis sample of recycled raw material, and evaluation method of recycled raw material

Patent metadata

Field	Value
Publication number	US-9329105-B2
Application number	US-201314400726-A
Country	US
Kind code	B2
Filing date	Sep 13, 2013
Priority date	Apr 26, 2013
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

Provided is a sampling method of recycled raw material, the method including: a process (S 3 ) of primarily crushing recycled raw material; a process (S 4 to S 7 ) of separating primarily crushed raw material into three components, “scrap iron”, “scrap aluminum”, and “recycled raw material component other than scrap iron and scrap aluminum” and performing primary sample reductions of the three components; a process (S 8 to S 10 ) of secondarily crushing “the recycled raw material component other than scrap iron and scrap aluminum”, which is subjected to the primary sample reduction, and performing a secondary sample reduction of “recycled raw material component other than scrap iron and scrap aluminum” which is secondarily crushed; and a mixing process (S 12 ) of mixing “scrap iron” and “scrap aluminum” with “the recycled raw material component other than scrap iron and scrap aluminum” which is subjected to the secondary sample reduction.

First claim

The invention claimed is:

1. A sampling method of recycled raw material, the method comprising:
a process of primarily crushing recycled raw material;
a process of separating primarily crushed raw material into three components, “scrap iron”, “scrap aluminum”, and “recycled raw material component other than scrap iron and scrap aluminum”;
a process of performing a primary sample reduction of “the recycled raw material component other than scrap iron and scrap aluminum” which is separated at least after the primary crushing process;
a process of secondarily crushing “the recycled raw material component other than scrap iron and scrap aluminum”, which is subjected to the primary sample reduction, into a size less than that in the primary crushing process and performing a secondary sample reduction of “the recycled raw material component other than scrap iron and scrap aluminum” which is secondarily crushed;
a process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed; and
a mixing process of mixing “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which is subjected to the secondary sample reduction at a mixing ratio corresponding to the weight ratio obtained in the previous process,
wherein a mixture obtained in the mixing process is set as an analysis sample.

2. The sampling method of recycled raw material according to claim 1 ,
wherein in the process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed,
the weight of each of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed is measured to obtain the weight ratio.

3. The sampling method of recycled raw material according to claim 1 ,
wherein the process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed includes
a process of measuring the total weight of the recycled raw material before or after the primary crushing process,
a process of measuring the weight of each of “scrap iron” and “scrap aluminum” which are separated after the primary crushing process, and
a process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum” and “the recycled raw material component other than scrap iron and scrap aluminum” based on a calculation result of the weight of “the recycled raw material component other than scrap iron and scrap aluminum”, which is obtained by subtracting the weight of “scrap iron” and the weight of “scrap aluminum” from the total weight of the recycled raw material, and the measured weights of “scrap iron” and “scrap aluminum”.

4. The sampling method of recycled raw material according to claim 1 ,
wherein in the primary crushing process, the recycled raw material is crushed into a size of 20 mm or less.

5. The sampling method of recycled raw material according to claim 1 ,
wherein in the secondary crushing process, “the recycled raw material component other than scrap iron and scrap aluminum” is crushed into a size of 5 mm or less.

6. An analysis sample of recycled raw material which is sampled using the sampling method of recycled raw material according to claim 1 .

7. An evaluation method of recycled raw material, the method comprising:
a process of mixing “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum”, which are obtained using the sampling method of recycled raw material according to claim 1 , with each other to obtain an analysis sample; and
a process of performing an elementary analysis of the analysis sample to measure the content of valuable metals in a certain number of samples.

8. A sampling method of recycled raw material, the method comprising:
a process of primarily crushing recycled raw material;
a process of separating primarily crushed raw material into three components, “scrap iron”, “scrap aluminum”, and “recycled raw material component other than scrap iron and scrap aluminum” from the primarily crushed raw material and performing primary sample reductions of the three components;
a process of secondarily crushing “the recycled raw material component other than scrap iron and scrap aluminum”, which is subjected to the primary sample reduction, into a size less than that in the primary crushing process and performing a secondary sample reduction of “the recycled raw material component other than scrap iron and scrap aluminum” which is secondarily crushed;
a process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed; and
a mixing process of mixing “scrap iron”, “scrap aluminum” which are subjected to the primary sample reduction, and “the recycled raw material component other than scrap iron and scrap aluminum” which is subjected to the secondary sample reduction at a mixing ratio corresponding to the weight ratio obtained in the previous process,
wherein a mixture obtained in the mixing process is set as an analysis sample.

9. The sampling method of recycled raw material according to claim 8 ,
wherein in the process of obtaining a weight ratio of the three components,“scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed,
the weight of each of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed is measured to obtain the weight ratio.

10. The sampling method of recycled raw material according to claim 8 ,
wherein the process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum”, and “the recycled raw material component other than scrap iron and scrap aluminum” which are primarily crushed includes
a process of measuring the total weight of the recycled raw material before or after the primary crushing process,
a process of measuring the weight of each of “scrap iron” and “scrap aluminum” which are separated after the primary crushing process, and
a process of obtaining a weight ratio of the three components, “scrap iron”, “scrap aluminum” and “the recycled raw material component other than scrap iron and scrap aluminum” based on a calculation result of the weight of “the recycled raw material component other than scrap iron and scrap aluminum”, which is obtained by subtracting the weight of “scrap iron” and the weight of “scrap aluminum” from the total weight of the recycled raw material, and the measured weights of “scrap iron” and “scrap aluminum”.

11. The sampling method of recycled raw material according to claim 8 ,
wherein in the primary crushing process, the recycled raw material is crushed into a size of 20 mm or less.

12. The sampling method of recycled raw material according to claim 8 ,
wherein in the secondary crushing process, “the recycled raw material component other than scrap iron and scrap aluminum” is crushed into a size of 5 mm or less.

13. An analysis sample of recycled raw material which is sampled using the sampling method of recycled raw material according

Assignees

• Mitsubishi Materials Corp

Inventors

• Oguma Nobuhiro
• Takagi Makoto
• Wajima Eiji

Classifications

• G01N1/286 Primary

  involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising (microtomes G01N1/06; pulverising in general B02C; mixing in general B01F) · CPC title

• G01N1/4077

  by other techniques involving separation of suspended solids · CPC title

• G01N1/38

  Diluting, dispersing or mixing samples · CPC title

• G01N1/04 Primary

  in the solid state, e.g. by cutting · CPC title

• G01N2001/2866

  Grinding or homogeneising · CPC title