东庞煤矿高硫煤配煤炼焦的研究与应用

Preparation of blended raw high-sulphur coal in Dongpang coal mine

东庞煤矿9号煤资源丰富,为高硫气肥煤和肥煤,黏结性很好,适当降硫就可用于炼焦配煤,此品种在周边用户群中有一定的需求。通过对东庞矿区的2号煤和9号煤进行配煤、煤质分析、40 kg焦炉炼焦实验等,研究配煤指标变化和成焦性能。镜质组最大反射率实验结果表明:配煤具有煤种的单一性,其工业性质及黏结性等指标具有近似的数学加权性,通过配煤入洗可以实现高低硫资源煤质指标互补。将研究成果用于指导实际生产,改造东庞矿洗煤工艺,新建东庞矿西庞井选煤厂,实现高硫煤的全部配煤入洗,生产出满足市场需求的中高硫气肥煤品种,扩大了炼焦资源和高硫煤用途,提高了企业经济效益。2011年生产高硫精煤111万t,直接增加收入1.5亿元。

There are abundant No.9 coal resources in Dongpang coal mine,most are high-sulphur gas-fat coal and fat coal,the caking property is excellent,so just reduce sulphur content,the blended raw coal can be used to coking.Investigate the coking properties of No.2 and No.9 coal resources according to coal blending test,coal quality analysis and 40 kg sample coke oven test.The maximum reflectance of vitrinite test show that,the blended coal retain some part of raw coal characteristics,its industrial natures and caking property can be solved for weighting function.The blended coal for cleaning can comprehensively utilize high and low sulphur coal resources.The newly-built Xipangjing coal preparation plant adopts the research achievement for practical production guidance,the middle and high sulphur gas-fat coal products meet the market demand,that means the benefits increase.The high sulphur clean coal yield is 1.11×106 tons,increase 1.5×108 yuan in 2011.