Title:
SINTERED ORE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/137484
Kind Code:
A1
Abstract:
The present invention proposes a sintered ore production method with which, even in the case where performance in granulation of a blended sintering raw material is improved by adding an ultrafine powder raw material to the blended sintering raw material, it is possible to prevent a decrease in productivity after an ore to be sintered has undergone sintering. In this sintered ore production method, a sintered ore is produced by granulating, with a granulator, a blended sintering raw material including iron ores of multiple brands and then firing the resultant granule raw material for sintering in a sintering machine. In the blended sintering raw material, an ultrafine powder raw material in which a predominant quantity is accounted for by particles having a diameter of 10 μm or less is blended so that the quantity of the particles having a diameter of 10 μm or less is increased by 1-10 mass%. In granulation of said blended sintering raw material, coke dust is added while the blended sintering raw material containing no coke dust is being granulated by the granulator.
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Inventors:
TAKEHARA KENTA (JP)
YAMAMOTO TETSUYA (JP)
HIGUCHI TAKAHIDE (JP)
HIROSAWA TOSHIYUKI (JP)
IWAMI YUJI (JP)
YAMAMOTO TETSUYA (JP)
HIGUCHI TAKAHIDE (JP)
HIROSAWA TOSHIYUKI (JP)
IWAMI YUJI (JP)
Application Number:
PCT/JP2019/048041
Publication Date:
July 02, 2020
Filing Date:
December 09, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22B1/16
Domestic Patent References:
| WO2011004907A1 | 2011-01-13 | |||
| WO2018194014A1 | 2018-10-25 |
Foreign References:
| JP2001187887A | 2001-07-10 |
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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