Title:
METHOD OF RECYCLING BLAST FURNACE WET DUST
Document Type and Number:
Japanese Patent JP2016188414
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method of recycling blast furnace wet dust enabling blast furnace wet dust to be effectively recycled.SOLUTION: There is provided the method of recycling blast furnace wet dust which is recovered with a wet dust collector from blast furnace exhaust gas and contains carbon and iron oxide. The method of recycling blast furnace wet dust comprises: a step of charging the blast furnace wet dust or a mixture dust formed by mixing iron oxide-containing dust with the blast furnace wet dust into a furnace body of a hot metal mixer car after the furnace body discharges molten pig iron; a step of holding the furnace body after the charging step; and a step of injecting the molten pig iron into the furnace body after the holding step. The method of recycling blast furnace wet dust is characterized in that mass ratio of carbon to iron of the blast furnace wet dust or mix dust injected in the charging step is 0.5 or more and a temperature in the blast body in the charging step is 1000°C or more. It is preferable that the furnace body is oscillated in the holding step and holding time in the holding step is 1.5 hrs to 10 hrs.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
SAWAYAMA MUNEYOSHI
INOUE TAKESHI
INOUE TAKESHI
Application Number:
JP2015069318A
Publication Date:
November 04, 2016
Filing Date:
March 30, 2015
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C21B3/04; C21C1/06; F27D17/00
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