Study on the influence of tar residue coal blending coking on the mechanical strength of coke and the prediction of proportions
This study examines the influence of blending coal tar residue with coking coal on the quality of both the coking coal and the resultant coke,and delves into their underlying correlations.By leveraging the influence pattern of varying blending ratios on the caking index,an optimal blending ratio of tar residue in coking coal is determined,thereby providing technical guidance for the industrial application of tar residue in coal blending for coking.Experi-mental samples were sourced from a specific coking plant,including coal tar residue and coking coal.Coking tests were conducted with tar residue blended at 3.0％and 5.0％,respectively,while maintaining constant conditions such as bulk density and particle size.The results revealed that after blending tar residue,the moisture and total sul-fur content of the coking coal increased,whereas the ash content decreased.For coking coals with inherently low vol-atile matter content,the incorporation of tar residue was advantageous in enhancing the volatile matter.Additionally,the air-dried moisture and volatile matter of the coke slightly increased,the total sulfur content decreased,and the mechanical strength of the coke was improved.By analyzing the variation pattern of the caking index with the addition of tar residue ranging from 1％to 5％,it was discovered that when the tar residue blending ratio was controlled be-tween 3.0％and 4.5％,it could ensure that the caking index of the coke did not decrease while maximizing the in-corporation of tar residue,thereby facilitating the resource utilization of solid waste.
tar residuemechanical strengthquality of coking coalcaking indexproportion of blendingbulk densityparticle size
万方数据
维普
