Study On The Oxidation Resistance Of Binding Coke Made From Coal-tar Pitch

With two kinds of coal-tar pitch as raw materials, binder pitches were modiifed by addingfour kinds of additive （aromatic nitro-compound，lfuoride, boron compound and siliconcompound）. Modified pitch cokes were prepared at1250°C.Binding cokes were characteirzed bycoking value, CO₂reactivity and TG. The results show that aromatic nitrocompoundssubstantially enhance coking condensation of coal-tar pitch. The oxidation resistance of pitchcokes modified by boron compound and lfuoride has been evidently improved. These two kindsof additive effecitvely changed the oxidation behavior of modiifed pitch binding coke.CO₂reactivity of boron compound modified pitch cokes has been reduced by87%.Oxidation weightloss temperature of.boron compound modiifed pitch cokes has been evidently increased.Oxidation weight loss rate of.boron compound modiifed pitch cokes has been evidentlydecreased. Modification treatment by boron compounds has effectively inhibited oxidation ofpitch binding coke.