Mercury (Hg) is a toxic trace element emitted from coal conversion and utilization. Samples with different ranks gangue Ningwu Coalfield are selected investigated in this study. For understanding dependence of mercury distribution characteristics on coalification degree, Pearson regression analysis coupled Spearman rank correlation employed to explore the relationship between sulfur, ash coal, ...

Due to the gradual depletion of shallow mineral resources at present, mines are now gradually entering deep mining stage. To promote safe and efficient green coal sustainable energy development, improve production efficiency paste filling mining, research group has performed this study on technology application working face. Taking face 1241 (3) Xieqiao mine as engineering background, selection...

In response to China’s “double carbon” strategic goal, the problem of large emissions coal gangue and low utilization rate cemented backfill with fly ash as admixture needs be solved urgently. Based on this, this paper uses powder coarse fine aggregate prepare coal-gangue-based green filling body (CGGCFB) different mass concentrations (MC). The workability, mechanical properties, microscopic po...

China produces and consumes most of coal in the world. This situation is expected to continue within a certain period in the future. Currently, Chinese coal industry is confronted with several serious problems relating to land resource, water resource, environmental, and ecological sustainability. Coal resource exploitation causes the permanent fracture and movement of strata structure, which h...

The Thor lake deposit is a world class resource of rare earth (REE) metals and minerals in Canada. Development work to optimize a REE mineral recovery process flow sheet is underway, however, given the ore mineralogy; the developed reagent scheme is relatively complex. As part of a research project, micro flotation tests were conducted on a feed sample in order to examine factors affecting stre...