Title:
非鉄金属冶金スラグの処理方法
Document Type and Number:
Japanese Patent JP5873600
Kind Code:
B2
Abstract:
A method for processing slags containing iron and non-ferrous metals, to produce clean slag free of detrimental substances and non-ferrous metals and suitable for use as a raw material or construction material. Slag is reduced in a reduction furnace with the help of reducing agents so that at least 5% of the iron of the slag is reduced into metal. Some of the non-ferrous metals, such as zinc, lead, arsenic and cadmium, vaporize. The contents of the reduction furnace are continuously mixed to prevent separation of a metallic phase from the slag. The generated slag-metal mixture is tapped off from the reduction furnace, cooled, crushed and ground to a finer size. Finally, a metal fraction is separated from a clean slag.
More Like This:
Inventors:
Mezzarinta, Mayer-Leena
Liipo, Yussi
Kurki, Pekka
Shadema, Madeleine
Liipo, Yussi
Kurki, Pekka
Shadema, Madeleine
Application Number:
JP2015506272A
Publication Date:
March 01, 2016
Filing Date:
April 15, 2013
Export Citation:
Assignee:
OUTOTEC (FINLAND) OY
International Classes:
C22B7/04; C22B5/02; C22B5/16; F27D3/16; F27D17/00; F27D27/00
Domestic Patent References:
| JP2010236069A | ||||
| JP2012067375A | ||||
| JP2000282154A | ||||
| JP2010168641A |
Attorney, Agent or Firm:
Takao Katori