Jfe Steel Corporation

Masahiro Shinohara

Takashi Matsui

Yusuke Dohi

Kiyoshi Fukada

Michio Honma

Kazutoshi Hanada

Mikiya Nagayama

Yoshiko Maeta

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=(&#x3c3;)/(&#x3c3;)&#x2003;&#x2003;(1).

Method for manufacturing coke, coke, and method for evaluating homogeneity of coal blend

A coke manufacturing method includes preparing blended coal by blending coal of at least two types, stirring and mixing the blended coal so as to disintegrate at least a part of pseudo-particles in the blended coal that have been formed by agglomeration of coal particles, and charging the blended coal after stirring and mixing into a coke oven and carbonizing the blended coal so as to manufacture coke.

Coke manufacturing method

Growing community of inventors

Kurashiki, Japan

Masahiro Shinohara