Title:
電炉ダストからの金属回収方法及び装置
Document Type and Number:
Japanese Patent JP5541736
Kind Code:
B2
Abstract:
Obtained are a method and an apparatus for recovering a metal from electric furnace dust, which are capable of recovering the metal with high efficiency without causing problems such as occlusion of the apparatus. An apparatus (1) for recovering a metal from electric furnace dust of the present invention, which recovers molten iron and zinc oxide by melting and reducing electric furnace dust, which contains not less than 12% by mass of a chlorine content and a zinc content in total, mainly by electrical energy. The apparatus (1) for recovering a metal from electric furnace dust comprises: a melting/reduction furnace (3); a secondary combustion chamber (5) in which the exhaust gas from the melting/reduction furnace (3) is caused to form an upward flow at an ascending rate of 0.5-2.0 m/s (inclusive); a coarse-grained dust recovery device (7) for recovering coarse-grained dust that settles in the lower part of the secondary combustion chamber (5); and a fine dust recovery device (9) which is disposed on the exhaust gas exit side of the secondary combustion chamber (5) for the purpose of recovering fine dust.
Inventors:
Michio Nakayama
Keiji Wakahara
Keiji Wakahara
Application Number:
JP2010540747A
Publication Date:
July 09, 2014
Filing Date:
September 14, 2010
Export Citation:
Assignee:
Steel plan tech incorporated company
International Classes:
C22B7/02; C22B19/30; C22B19/34; F27D17/00
Domestic Patent References:
| JP2010180461A | 2010-08-19 | |||
| JP2008101826A | 2008-05-01 | |||
| JP2008291333A | 2008-12-04 | |||
| JP2006328451A | 2006-12-07 | |||
| JPS58113328A | 1983-07-06 | |||
| JPH0770662A | 1995-03-14 | |||
| JP2010180461A | 2010-08-19 | |||
| JP2008101826A | 2008-05-01 | |||
| JP2008291333A | 2008-12-04 | |||
| JP2006328451A | 2006-12-07 | |||
| JPS58113328A | 1983-07-06 | |||
| JPH0770662A | 1995-03-14 |
Attorney, Agent or Firm:
Toshihiko Ishikawa