Influence of Preparation Process on Briquette and Form Coke Compressive Strength

Abstract

This paper investigated preparation process of briquette by using starch and bentonite as composite binder. It also studied the impact of pulverized coal particle size, coking particle size, compacting pressures, moisture content on the strength of briquette and form coke. The result showed that coking coal particle size was the main influence factor. And the optimum conditions of molding process were as follows: low rank pulverized coal particle size was less than 0.63mm, coking coal particle size was less than 0.28mm, compacting pressure was 60 kN, molding moisture content was 12%. Under the optimal conditions, compressive strength of briquette and form coke was 3470 N/ball and 2910 N/ball, respectively.