配用弱黏结煤对配煤指标的影响研究

Study on Influence of Weakly Caking Coal on Coal Blending Indices

为解决弱黏结煤用于炼焦配煤时所导致的配煤常规黏结性能指标胶质层指数、奥阿膨胀度及黏结指数难预测的问题,在选定基础配煤方案的基础上,添加大同弱黏结煤,研究了大同弱黏结煤配比从0%～25%变化时,配煤常规黏结性能指标实测值与预测值之间的关系。结果表明,大同弱黏结煤配比在0%～25%时,各黏结性能指标的预测值与实测值存在一定的线性相关性。基于该相关性,可以较为准确地预测常用的配煤黏结性能指标,为更好地控制配煤和焦炭质量提供了可能。

In order to solve the difficulty of predicting the conventional coal blending adhesive performance indices such as plastometer index, Arnu-Audiberts dilatation index and caking index when weakly caking coal was used for coking coal blending, on the basis of selecting the basic coal blending scheme, Datong weakly caking coal was added, and the relationships between predicted value and measured value of the adhesive performance indices mentioned above were studied. It was found that there was a good linear relationship between the predicted value and the measured value when the ratio of weakly caking coal varied in the range of 0%-25%. Based on these linear relationships, the common adhesive performance indices of blended coal could be predicted more accurately, making it possible to better control the quality of coal blending and coke.