氧化度对炼焦煤工艺性质的影响研究

STUDY ON THE INFLUENCE OF OXIDATION DEGREE ON TECHNOLOGICAL PROPERTIES OF COKING COAL

在实验室模拟自然氧化,以氧化时间作为氧化度定量的指标,研究了氧化度对炼焦煤工艺性质的影响,并分析了氧化引起的煤中结构变化.结果表明,随着氧化度增加,炼焦煤的Vdaf未见有变化,但黏结性和结焦性均有不同程度降低,随煤化度增加,这种影响逐渐减小,同时用红外光谱分析找出了其变化的原因.

The influence of mild oxidation the structure of the coals were studied under the on the technology properties and the changes of simulative nature oxidation at laboratory, and the oxidize time was used for the oxidation degree. The results showed that the Va,f of the coals had almost not changed, but the caking and coking capacity had become worsening more or less with the increase of oxidation degree. And the higher the rank of the coal, the less influence on these technology properties, and the reason of these changes were explained with FTIR.