نتایج جستجو برای: open pit mines

تعداد نتایج: 407524  

Journal: :Sustainability 2023

In the next decades many of old tailings storage facilities (TSFs) could be re-processed if one considers prices metals, new uses metals which today are not valuable, and application new, more efficient metallurgical technologies. this context, in-pit disposal mine (IPDMT) is an attractive alternative to used as part responsible closure: mines reprocess place them in open pit sustainable closur...

The assessment of fragmentation through blasting and therefore subsequent crushing and grinding stages is important in order to control and optimize the mining operation. Prediction of the mean size of fragmented rock by the rock mass characteristics, the blasting geometry, the technical parameters and the explosive properties is an important challenge for the blasting engineers. Some of the ef...

Journal: :Energies 2022

Brown coal remains an important energy source in Europe, including countries such as Germany, Poland, the Czech Republic, and Greece. Open-pit mines disturb environment terms of air quality, hydrology, chemical biological transformations rivers receiving mine waters. In present study, we assessed impact waters from four brown open-pit on contamination river sediments. Chemical analysis included...

Journal: :journal of mining and environment 2012
ebrahim elahi reza kakaie amir yusefi

ultimate limits of an open pit, which define its size and shape at the end of the mine’s life, is the pit with the highest profit value. a number of algorithms such as floating or moving cone method, floating cone method ii and the corrected forms of this method, the korobov algorithm and the corrected form of this method, dynamic programming and the lerchs and grossmann algorithm based on grap...

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