Title:
DUST RECOVERY METHOD
Document Type and Number:
Japanese Patent JP2016194103
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a dust recovery method capable of effectively suppressing generation of failure on facility during dust recovery and effectively collecting dust having high iron percentage content.SOLUTION: The dust recovery method is a method for recovering dust generated in a converter having a process of sprinkling to exhaust gas containing the dust by a wet type dust collector, a process of separating coarse grain from dust collection drain water after the sprinkling process by a classifier and a process of separating fine particle from water containing the fine particle after the coarse particle separation process by a thickener, where pH of the dust collection drain water treated in the coarse particle separation process is adjusted in a range of 10 to 12, pH of water containing the fine particle treated in the fine particle separation process is adjusted in a range of 7 to 9 and difference of pH of the dust collection drain water and pH of water containing the fine particle is adjusted to 3 or more.SELECTED DRAWING: Figure 1
Inventors:
YOSHIDA ATSUHIKO
Application Number:
JP2015074014A
Publication Date:
November 17, 2016
Filing Date:
March 31, 2015
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C21C5/40; F27D17/00
Domestic Patent References:
| JP2014084525A | 2014-05-12 | |||
| JP2004025166A | 2004-01-29 | |||
| JPH0797638A | 1995-04-11 | |||
| JP2002126787A | 2002-05-08 | |||
| JP2008238032A | 2008-10-09 | |||
| JP2008038032A | 2008-02-21 | |||
| JP2007017102A | 2007-01-25 |
Attorney, Agent or Firm:
Hajime Amano
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kazuki Kagami
Kenichi Fujinaka
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kazuki Kagami
Kenichi Fujinaka