US 12,565,619 B2 · Method for preparing coal or caking additive and method for producing coke

Abstract

A method for preparing a coal, which is used alone or in combination with at least one other coal, or a caking additive as a raw material for coke production. The method includes, before the coal or caking additive is delivered to a coke plant, adjusting a grain size such that the amount of grains with a grain size of 6 mm or more in the coal or caking additive satisfies at least one of a degree of entanglement (a−b)/a of 0.20 or more and a portion having a height a of 30 mm or more is 30% or less by mass. The height a is a height of semicoke adhering to a stirrer, the semicoke formed by heating the coal or caking additive in a container while rotating the stirrer, and the height b is a height of the semicoke on an inner wall of the container.

Claims10

Dependent claims

A method for preparing a coal, or a caking additive as a raw material for coke production, the method comprising:

before the coal or the caking additive is delivered to a coke plant, adjusting a grain size of the coal or caking additive such that a portion of grains with a grain size of 6 mm or more in the coal or the caking additive has at least one of (i) a degree of entanglement (a−b)/a of 0.20 or more, and (ii) a portion having a height a of 30 mm or more is 30% or less by mass,
heating and stirring the coal or caking additive in a container to form a semicoke,
wherein the height a is a height of the semicoke adhering to a stirrer, and a height b is a height of the semicoke on an inner wall of the container.

Dependencies are inferred from the claim text.

Method for preparing coal or caking additive and method for producing coke

Life of this patent

Method for preparing coal or caking additive and method for producing coke

Life of this patent

Abstract

Claims10