公开(公告)号：US10414986B2

公开(公告)日：2019-09-17

申请号：US15312400

申请日：2015-05-15

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke Dohi ,  Yoshiko Maeta ,  Kazutoshi Hanada ,  Kiyoshi Fukada ,  Takashi Matsui ,  Michio Honma ,  Masahiro Shinohara

IPC: C10B57/04 ,  C10B57/10 ,  C10B53/04 ,  C10B41/02 ,  G01N33/22

Abstract: A method for manufacturing coke having a high strength and excellent extrusion capability. The method includes a preparing step of blending two or more coal brands to prepare a coal blend, a stirring and mixing step of stirring and mixing the coal blend to disintegrate at least a part of pseudo-particles that have been formed by agglomeration of coal particles in the coal blend, and a carbonizing step of charging the stirred and mixed coal blend into a coke oven to carbonize the stirred and mixed coal blend. Additionally, a mixing apparatus is used in the stirring and mixing step that has a capability of controlling a degree of mixing of the coal blend to be 0.85 or more at 60 seconds after start of a mixing operation. The degree of mixing is calculated by the following equation (1): degree of mixing=(σC0−σC)/(σC0−σCf)  (1).