Method for producing coke, and coke

Abstract

A method for producing a coke includes performing dry distillation of a mixture. The mixture includes: an ashless coal; an oxidized ashless coal obtained by an oxidation treatment of an ashless coal; and a raw petroleum coke. Relative to 100 parts by mass of a total of the ashless coal, the oxidized ashless coal and the raw petroleum coke, a content of the ashless coal is from 5 to 40 parts by mass, and a total content of the ashless coal and the oxidized ashless coal is from 30 to 70 parts by mass.

1 . A method for producing a coke, comprising performing dry distillation of a mixture containing:
 an ashless coal;   an oxidized ashless coal obtained by an oxidation treatment of an ashless coal; and   a raw petroleum coke,   wherein, relative to 100 parts by mass of a total of the ashless coal, the oxidized ashless coal and the raw petroleum coke,   a content of the ashless coal is from 5 to 40 parts by mass, and   a total content of the ashless coal and the oxidized ashless coal is from 30 to 70 parts by mass.   
     
     
         2 . The method for producing a coke according to  claim 1 , wherein the mixture is subjected to forming, and then, the dry distillation is performed. 
     
     
         3 . The method for producing a coke according to  claim 1 , wherein a percentage of increase in oxygen of the oxidized ashless coal is from 2 to 10%. 
     
     
         4 . The method for producing a coke according to  claim 1 , wherein the oxidation treatment is an air oxidation. 
     
     
         5 . The method for producing a coke according to  claim 1 , wherein the oxidation treatment is performed at a temperature of 150° C. or more and less than an ignition point. 
     
     
         6 . The method for producing a coke according to  claim 1 , wherein the dry distillation is performed in a chamber furnace. 
     
     
         7 . The method for producing a coke according to  claim 2 , wherein the dry distillation is performed in a rotary kiln. 
     
     
         8 . A coke produced by performing dry distillation of a mixture, the mixture containing:
 an ashless coal;   an oxidized ashless coal obtained by an oxidation treatment of an ashless coal; and   a raw petroleum coke,   wherein, relative to 100 parts by mass of a total of the ashless coal, the oxidized ashless coal and the raw petroleum coke,   a content of the ashless coal is from 5 to 40 parts by mass, and   a total content of the ashless coal and the oxidized ashless coal is from 30 to 70 parts by mass.