| 摘要 |
<p>The present invention relates to a method for producing an additive that is added in a raw material coal for producing coke, the method comprising the steps of preparing a coal; preparing a solvent to be mixed with the coal; mixing the coal and the solvent; liquefying and extracting the mixture of the coal and solvent; and collecting liquefied soluble material and non-liquefied insoluble material after finishing the liquefying and extracting step. Accordingly, by means of embodiments of the present invention, an additive for reinforcing the strength of coke is produced using coal, especially, a semi-soft coking coal that is abundant and inexpensive. Then, costs for producing the additive can be reduced. Even though the semi-soft coking coal is used as raw material coal, caking properties can be ensured by means of the additive of the present invention. Therefore, the content of the semi-soft coking coal included in a combined coal can be increased.</p> |
