山西省典型煤电基地煤基固废综合利用研究与资源化分析

通过对山西省典型煤电基地潞安矿区煤矸石和粉煤灰综合利用途径进行深入的研究,对煤矸石和粉煤灰样品的化学组成、矿物组成、发热量、重金属含量、灰分含量、水分含量、含碳量和全硫量等物理化学性质进行检测试验,结合煤基固废综合利用的总体原则和对应用过程中对环境污染风险的考虑,选择适合不同物理化学性质的煤矸石的利用途径和优先发展产业链。研究发现,山西地区大部分煤矸石适合制备水泥和建筑材料,部分煤矸石适合回收硫铁矿、制作高级陶瓷、制备分子筛、用作燃料和发电材料;而山西地区的粉煤灰不适于做混凝土掺料、水泥混合材、硅酸盐制品、砂浆原料、回填材料、泡沫绝热材料、粉煤灰三渣和陶质材料,适合用做填料、农用、提铝,也可用于水处理剂和其他高附加值应用。该研究可为提高山西省典型煤电基地固废利用率和产业化实际应用提供参考。

Comprehensive utilization study and resource recycling analysis of coal based solid waste in Shanxi typical coal power base

Through the in-depth study on the comprehensive utilization ways of coal gangue and fly ash in Lu'an mining area,a typical coal power base in Shanxi province,the chemical composition,mineral composition,calorific value,heavy metal content,ash content,moisture content,carbon content and total sulfur content of coal gangue and fly ash samples were tested,combined with the general principle of coal based solid waste comprehensive utilization and considering the risk of environmental pollution in the application process,the utilization ways and the priority development industrial chain of coal gangue with different physical and chemical properties should be selected should be selected.It was found that most gangues in Shanxi were suitable for the preparation of cement and building materials,some gangues were suitable for recovering pyrites,making advanced ceramics,preparing molecular sieves,fuel and power generation materials;fly ash in Shanxi area was not suitable for making concrete admixtures,cement mixed materials,silicate products,mortar raw materials,backfill materials,foam insulation materials,and fly ash mixed materials and ceramic materials,while suitable for padding making,farm-oriented materials,aluminum extraction,water treatment agent and other high value-added applications.This study could provide reference for improving the utilization rate of solid waste and industrial application in typical coal power base in Shanxi province.