Quicklime is a widely used industrial chemical and its characteristics may be affected by the limestone calcination temperature. The present study investigated quicklime obtained from after at different temperatures (800, 900, 1000 ℃) six geological-different mines in West Sumatera, Indonesia. X-ray fluorescence (XRF) analysis was performed to characterize elemental compositions quicklime. stoi...

With globally more than 100,000 km2 impacted by surface mining at present, and with increasing demand for surface-mined products, land managers are challenged to address landscape degradation of decommissioned quarries, especially in urban areas. In this study, soil, microclimate, vegetation community data were collected from geomorphologically distinct locations (quarry floor, platform pond, q...

The use of blasting cost (BC) prediction to achieve optimal fragmentation is necessary in order to control the adverse consequences of blasting such as fly rock, ground vibration, and air blast in open-pit mines. In this research work, BC is predicted through collecting 146 blasting data from six limestone mines in Iran using the artificial neural networks (ANNs), gene expression programming (G...

Reclamation (revegetation) activities must be carried out upon the completion of mining. Limestone dust can affect physical, chemical, and biological properties soil. To increase growth rate non-wood product species such as coffee, fertilizers mycorrhiza are introduced to reclamation site. The goal this study is examine effects limestone covering former mines different doses mycorrhizal on coff...

The typical thick-hard limestone roof with high failure pressure and easy fracture closure under in situ stress is extremely prone to induce disasters, which seriously threatens the safe production of coal mines. modification carbonate minerals by acidic effects can effectively realize weakening control hard strata. In this study, a multi-factor orthogonal experiment was designed for acidificat...

A fast, quantitative image analysis technique was developed to assess potential rock weathering by bacteria. The technique is based on reduction in the surface area of rock particles and counting the relative increase in the number of small particles in ground rock slurries. This was done by recording changes in ground rock samples with an electronic image analyzing process. The slurries were p...