Abstract
In order to successfully transform coking technology of moisture-free coal, which has energy conservation and environmental protection properties into production, moisture effects on coking course of coal was researched and the caking indices; plastometric indices, Gieseler fluidity, and coke optical texture of coking coal under different moisture proportions were studied. The result showed that when the moisture proportion of charging coal was decreased, the voids among coal particle minished. The size and proportion of pores produced by moisture’s volatilization declined, the expansion pressure produced in coking course increased and inborn plastometric layer’s spreading property was improved. All these made caking indices of coking coal take on increasing trend. They also made the shrinking value x decrease, the solid-soft interval increase, the fluidity and the spreading property of layer among anthracite be improved and coke tight property be improved. These provided many useful conditions for coke with good quality and the decrease of coking wastewater.
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