Title:
EVALUATION METHOD FOR COAL, PREPARATION METHOD FOR BLENDED COAL, AND PRODUCTION METHOD FOR COKE
Document Type and Number:
WIPO Patent Application WO/2020/179576
Kind Code:
A1
Abstract:
The invention makes it possible to more accurately specify a coal constituting a coal blend that can produce a coke having a desired strength, and the mass ratio of the coal, as compared with the related art. A preparation method for a blended coal, comprises: determining an interfacial tension at which the desired strength is reached from a correlation on the basis of the correlation determined from the strength of a coke produced from the blended coal and a surface tension of the blended coal determined from a surface tension γ100 at which an inert amount is 100%, a surface tension γ0 at which the inert amount is 0%, a blending ratio of each brand of coal in the blended coal, the mass ratio of an inert structure, and the mass ratio of a softening and melting structure; and mixing two or more brands of the coal at a mass ratio ensuring the surface tension at which the desired strength is reached, or a lower surface tension, to prepare the blended coal.
Inventors:
IGAWA DAISUKE (JP)
DOHI YUSUKE (JP)
MATSUI TAKASHI (JP)
DOHI YUSUKE (JP)
MATSUI TAKASHI (JP)
Application Number:
PCT/JP2020/007700
Publication Date:
September 10, 2020
Filing Date:
February 26, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C10B57/04; G01N33/22
Domestic Patent References:
| WO2013145678A1 | 2013-10-03 | |||
| WO2013145679A1 | 2013-10-03 | |||
| WO2013145680A1 | 2013-10-03 | |||
| WO2014129337A1 | 2014-08-28 | |||
| WO2013145680A1 | 2013-10-03 |
Foreign References:
| JP2015193829A | 2015-11-05 | |||
| JP2018197319A | 2018-12-13 | |||
| JP2019031641A | 2019-02-28 |
Other References:
D.W. FUERSTENAU, INTERNATIONAL JOURNAL OF MINERAL PROCESSING, vol. 20, 1987, pages 153
See also references of EP 3936586A4
See also references of EP 3936586A4
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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