Method for deciding blending amount of ash-free coal, and process for producing coke for blast furnace

• Main Authors: HAMAGUCHI MAKI, ISHIDA KAZUHIDE, NISHIBATA YUKO, WADA SHOHEI, SHISHIDO TAKAHIRO
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2017
• Subjects: CHEMISTRY; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The purpose of the present invention is to provide: an efficient method for deciding the blending amount of ash-free coal when producing a coke for blast furnaces; and a process for producing a coke for blast furnaces using said decision method. This method is for deciding the blending amount of ash-free coal obtained by solvent extraction of coal, when producing a coke for blast furnaces which comprises feed coal and the ash-free coal. The method comprises: calculating a reference value W [mass%] from the porosity index Pv [vol%] of the feed coal, the expansibility index D [vol%] of the ash-free coal, and the true specific gravity [Rho] of the ash-free coal using the following equation (1); and deciding the blending amount of the ash-free coal with respect to the blend coal on the basis of the reference value W. The blending amount of the ash-free coal with respect to the blend coal is preferably 0.29W-1.00W [mass%]. W=(Pv/D)*[Rho]*100 (1) 本发明的目的在于，提供种高炉用焦炭在制造时的高效的无灰煤调合量的决定方法和使用该决定方法的高炉用焦炭的制造方法。本发明是含有由煤的溶剂萃取