Method for producing molded product for ferrocoke

Abstract

A method for producing a molded product for ferrocoke, wherein a high-strength molded product for ferrocoke can be produced advantageously without making particular investment in facilities and inviting the operating troubles. In a method for producing a molded product for ferrocoke by molding a mixed starting material of coal, an iron-source material, a high-softening point binder having a softening point of not lower than 150° C., and a low-softening point binder having a softening point of lower than 150° C., at least one of the iron-source material and the high-softening point binder is previously heated to not less than a temperature lower by 20° C. than a softening point of the high-softening point binder to perform molding of the mixture.

1 - 6 . (canceled) 
     
     
         7 . A method for producing a molded product for ferrocoke by molding a mixed starting material of coal, an iron-source material, a high-softening point binder having a softening point of not lower than 150° C., and a low-softening point binder having a softening point of lower than 150° C., characterized in that at least one of the iron-source material and the high-softening point binder is previously heated to not less than a temperature lower by 20° C. than a softening point of the high-softening point binder to perform molding of the mixture. 
     
     
         8 . The method for producing a molded product for ferrocoke according to  claim 7 , wherein iron-source particles having an average particle size of not more than 2.0 mm are used as the iron-source material, heated to not less than a temperature lower by 20° C. than the softening point of the high-softening point binder, then mixed with the high-softening point binder, and thereafter mixed with the low-softening point binder having a softening point of lower than 150° C. to mold the mixed starting material. 
     
     
         9 . The method for producing a molded product for ferrocoke according to  claim 7 , wherein iron-source particles having an average particle size of not more than 2.0 mm are used as the iron-source material, and the high-softening point binder is heated to not less than a temperature lower by 20° C. than the softening point of the high-softening point binder, then mixed with the iron-source material, and thereafter mixed with the low-softening point binder having a softening point of lower than 150° C. to mold the mixed starting material. 
     
     
         10 . The method for producing a molded product for ferrocoke according to  claim 7 , wherein the iron-source material and the high-softening point binder are simultaneously charged into a kneading machine. 
     
     
         11 . The method for producing a molded product for ferrocoke according to  claim 8 , wherein the iron-source material and the high-softening point binder are simultaneously charged into a kneading machine. 
     
     
         12 . The method for producing a molded product for ferrocoke according to  claim 9 , wherein the iron-source material and the high-softening point binder are simultaneously charged into a kneading machine. 
     
     
         13 . The method for producing a molded product for ferrocoke according to  claim 7 , wherein the iron-source material or the high-softening point binder is heated to not more than a temperature higher by 10° C. than the softening point of the high-softening point binder. 
     
     
         14 . The method for producing a molded product for ferrocoke according to  claim 8 , wherein the iron-source material or the high-softening point binder is heated to not more than a temperature higher by 10° C. than the softening point of the high-softening point binder. 
     
     
         15 . The method for producing a molded product for ferrocoke according to  claim 9 , wherein the iron-source material or the high-softening point binder is heated to not more than a temperature higher by 10° C. than the softening point of the high-softening point binder. 
     
     
         16 . The method for producing a molded product for ferrocoke according to  claim 7 , wherein an average particle size of the iron-source material is 0.58-1.64 mm. 
     
     
         17 . The method for producing a molded product for ferrocoke according to  claim 8 , wherein an average particle size of the iron-source material is 0.58-1.64 mm. 
     
     
         18 . The method for producing a molded product for ferrocoke according to  claim 9 , wherein an average particle size of the iron-source material is 0.58-1.64 mm.