Coal gangue is a byproduct of coal mining, and has been piled up for years in China, forming thousands hills, which have become an important part abandoned mining areas. In recent years, the government issued various policies on ecological restoration hills provided economic support. However, relying solely support not long-term solution. The key to improve production efficiency promote their s...

This study examines the particle size and distribution of main chemical components gangue during crushing process. Coal mine was chosen as research object, its at various crusher discharge settings were examined through screening, grinding, composition testing, other methods. The findings demonstrate that characteristic in model has a logarithmic upward trend width port increases. In contrast, ...

Coal mining has caused groundwater pollution and loss. Using a mined area as water storage space for storing purifying mine is low-cost environmentally friendly method. In this study, static dynamic adsorption experiments on the ions in were carried out using roof rocks from Lingxin coal mine. The sample analysis results show that main chemical composition of mainly SiO2 Al2O3. chemistry type S...

Abstract The arsenic-bearing gold ore in Anhui, China is an extremely refractory ore, and the cyanide leaching rate of concentrate only 30%. mineralogical factors low were discussed by process analysis. results demonstrate that contains 20.30 g/t gold, 3.39% arsenic, 29.80% sulfur, 4.10% iron. Gold exists occurrence states metallic mineral-wrapped gangue fissure which account for 64.90%, 8.31%,...

Computer-vision-based separation methods for coal gangue face challenges due to the harsh environmental conditions in mines, leading reduction of accuracy. So, rather than purely depending on image features distinguish gangue, it is meaningful utilize fixed characteristics like density. This study achieves classification and based their mass, volume, weight. A dataset weight 3_side images colle...

The compaction and re-crushing characteristics of crushed gangue are important factors which affect the quality effectiveness filling quarry. To study particles, continuous grading intermittent two different structures were designed to bulk particle size distribution. By conducting a side-limited uniaxial compression test on gangue, deformation parameters samples under axial pressure conditions...