METHOD FOR PRODUCING BLENDED COAL AND METHOD FOR PRODUCING COKE

WIPO Patent Application WO/2021/140947

A1

Provided are a method for producing a blended coal, said method enabling the production of a blended coal from which a coke having high strength is obtained after dry distillation, and a method for producing a coke.　This method, which is for producing a blended coal by blending a plurality of brands of coals, comprises: by referring the surface tension of coal having an inertinite structure content of 100% by volume to as γ100 and referring the surface tension of coal having a softened and melted structure content of 100% by volume to as γ0, determining the range of γ0 of coal; among the brands of coals 1, 2, - -, i, - - n to be blended in the blended coal, specifying coal i the γ100 of which is out of the range of γ0; then measuring TI of coal i; and setting the blending ratio of coal i so as to give w, which is calculated in accordance with formula (1), of 20.4 % by mass or less.　(1): w=∑(xi x TIi) In formula (1); xi represents the blending ratio (% by mass) of coal i; TIi represents the ratio (% by volume) of the inertinite structure contained in coal i; and w represents the ratio by mass (% by mass) of the inertinite structure being out of the range of γ0 of coal in the blended coal.

IGAWA DAISUKE (JP)
MATSUI TAKASHI (JP)
DOHI YUSUKE (JP)

PCT/JP2020/048673

July 15, 2021

December 25, 2020

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JFE STEEL CORP (JP)

C10B57/04

WO2013145677A1	2013-10-03
WO2013145678A1	2013-10-03
WO2013145679A1	2013-10-03
WO2020179576A1	2020-09-10

JP5737473B2

2015-06-17

D. W. FUERSTENAU, INTERNATIONAL JOURNAL OF MINERAL PROCESSING, vol. 20, 1987, pages 153
See also references of EP 4089157A4

KUMASAKA Akira et al. (JP)

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