Title:
廃材料からの有価物の選別回収方法及び設備
Document Type and Number:
Japanese Patent JP6747420
Kind Code:
B2
Abstract:
To sort and recover a valuable substance from a waste material containing a used refractory material with high yield.SOLUTION: When sorting and recovering a valuable substance from a waste material containing a used refractory material, the waste material is classified by a sieve (1a) of a sieve opening D, the waste material which becomes oversized is crushed by a crusher (2) into a particle diameter which passes the sieve of the sieve opening D, the crushed waste material is classified by a sieve (1b) of a sieve opening Dsmaller than the sieve opening Dtogether with the waste material which becomes undersized by classification of the sieve (1a), and fine powders which become undersized are removed. Impurities are removed from the waste material, which becomes oversized by classification of the sieve (1b), by physical sorting, and the waste material in which the impurities are removed is recovered as a valuable substance. When performing size control as a preliminary treatment for physically sorting and recovering the valuable substance, classification by a sieve is firstly performed and only the oversized waste material is crushed, and therefore, the waste material, which has a particle diameter suitable for physical sorting from the beginning, is not crushed, and thus, increase of fine powders, which are not suitable for physical sorting, can be suppressed.SELECTED DRAWING: Figure 1
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Inventors:
High Yuki Ki
Yoshiaki Nishina
Junichi Yotsuji
Taniguchi
Yoko Miyamoto
Hisahiro Matsunaga
Yoshiaki Nishina
Junichi Yotsuji
Taniguchi
Yoko Miyamoto
Hisahiro Matsunaga
Application Number:
JP2017217612A
Publication Date:
August 26, 2020
Filing Date:
November 10, 2017
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B09B5/00; B02C23/08; B03B4/06; B07B4/08; B07B9/00
Domestic Patent References:
| JP2016077956A | ||||
| JP2007247016A | ||||
| JP11138542A |
Attorney, Agent or Firm:
Hideto Tomabechi