Title:
METHOD FOR PRODUCING COKE FOR IRONMAKING, COKE FOR IRONMAKING, AND METHOD FOR PRODUCING PIG IRON
Document Type and Number:
WIPO Patent Application WO/2018/043101
Kind Code:
A1
Abstract:
The present invention pertains to a method for producing coke for ironmaking, the coke having a representative strength of 2.5 MPa or higher, and the method including dry-distilling of raw material coal and a caking additive at a temperature of 800°C or lower. The representative strength is the crushing strength at which the cumulative fracture probability is 63.2% in a crushing strength test performed on six or more pieces of coke cut into a cylindrical shape having a diameter of 21 mm ± 2% and a height of 13 mm ± 2%. The present invention makes it possible to provide a method for producing high-strength coke at low cost, coke having a high hydrogen atom content obtained by said method, and a method for producing pig iron in which it is possible to reduce the amount of carbon dioxide.
Inventors:
YOSHIDA TAKUYA
SHISHIDO TAKAHIRO
SAKAI KOJI
OKUYAMA NORIYUKI
SAKIMOTO NAOTO
TAKANOHASHI TOSHIMASA
SHISHIDO TAKAHIRO
SAKAI KOJI
OKUYAMA NORIYUKI
SAKIMOTO NAOTO
TAKANOHASHI TOSHIMASA
Application Number:
PCT/JP2017/029176
Publication Date:
March 08, 2018
Filing Date:
August 10, 2017
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
AIST (JP)
AIST (JP)
International Classes:
C10B57/06; C21B5/00
Foreign References:
| JPH07179914A | 1995-07-18 | |||
| JP2010275567A | 2010-12-09 | |||
| JPS54148001A | 1979-11-19 | |||
| JPS54153801A | 1979-12-04 |
Other References:
JOURNAL OF THE JAPAN INSTITUTE OF ENERGY, vol. 90, no. 9, 2011, pages 853 - 858, XP055472970
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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