Physicochemical properties and resource utilization analysis of coal gangue in huaihe energy mining Area
Systematically analyze the physicochemical characteristics of coal gangue in Huaihe Energy Mining Area,and provide technical support for the high-quality comprehensive utilization of coal gangue and mine environmental management.Through the collection of coal mine gangue,determination of its chemical composition,mineral composition,rare earth content,heavy metal content,etc.,analysis of the physical and chemical characteristics of the gangue,the results show that:Huaihe River energy mine gangue for the silica-aluminum type gangue,the mineral composition of the main quartz and clay minerals,the G3 mine Fe2O3 content of 11.16％,for the high iron type of gangue;CaO,MgO content is lower,in the construction materials have a high value of utilization;SiO2,Al2O3 content is higher can be used for high quality comprehensive utilization and mine environmental management.High utilization value;SiO2,Al2O3 content is high can be used for the production of cement or the preparation of silicon,aluminum products;gangue in the fast-acting potassium content of the first level of the second standard,can be used as potash fertilizer;G3,G9 organic matter content is high,can be used for farmland improvement,to enhance soil fertility.The content of rare earth elements in the gangue is higher than that of the world coal,among which,the lanthanum and cerium content of G8 and G9 gangue is 3.15 and 2.98 times of that of the Chinese coal,which is of extraction and utilization value;the maximum value of 8 kinds of heavy metals in the gangue is much lower than the risk screening value,which is of low risk to the growth of crops and the ecological environment of the soil.
Huaihe Energy Mining Areacoal ganguephysical and chemical characteristicsresource utilization analysis
NETL
NSTL
万方数据
