Results 31 to 40 of about 1,795,114 (414)
, 2019 Coal as a fossil fuel has long been used for a variety of industrial and domestic purposes. The worldwide distribution and widespread availability of coal resources have been a major contributor to the economic growth of many countries, either directly through their own resources or indirectly through access to the international coal trade.
Suárez Ruiz, Isabel +2 more
openaire +2 more sources
Application of Coal Gangue as a Coarse Aggregate in Green Concrete Production: A Review
Materials, 2021 Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions.
Shan Gao, Sumei Zhang, Lanhui Guo
semanticscholar +1 more source
Destabilization of the hard coal microstructure by a weak electric field [PDF]
, 2018 This study aims to analyse physical and chemical changes in hard coal samples under the influence of low-intensity electric fields in comparison to the fragments of ejected coal, as well as the coal samples selected from the zones ...
Kamchatnyi, Oleksii +3 more
core +1 more source
Química Nova, 2013 Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently ...
Ruben Anillo-Correa +2 more
doaj +1 more source
A Comprehensive Review of Rare Earth Elements Recovery from Coal-Related Materials
Minerals, 2020 Many studies have been published in recent years focusing on the recovery of rare earth elements (REEs) from coal-related materials, including coal, coal refuse, coal mine drainage, and coal combustion byproducts particularly fly ash.
Wencai Zhang +3 more
semanticscholar +1 more source
Historical Costs of Coal-Fired Electricity and Implications for the Future [PDF]
Energy Policy, Volume 39, Issue 6, June 2011, Pages 3042-3054, 2010 We study the costs of coal-fired electricity in the United States between 1882 and 2006 by decomposing it in terms of the price of coal, transportation costs, energy density, thermal efficiency, plant construction cost, interest rate, capacity factor, and operations and maintenance cost.
arxiv +1 more source
Co-combustion Coal and Waste Alternative Fuel: Thermogravimetric Analysis [PDF]
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2011 Combustion of coal together with a relative small percentage of waste alternative fuel (WAF) may be a choice for the management of these wastes. Co-combustion coal and their blends of 5%, 10% and 50% (wt.%) with waste alternative fuel were tested in a ...
Michaela KOŘISTKOVÁ +2 more
doaj +1 more source
International Journal of Innovative Science and Research TechnologyEffective modelling and integrated spectral analysis approaches can advance modelling precision. To develop an integrated spectral forecast modelling of soil organic carbon (SOC), this research investigated a mining coal in Dengcao Coal Mine Area ...
Gill Ammara, Xiaojun Nie, Chang -hua LIU
semanticscholar +1 more source
A high-resolution gridded inventory of coal mine methane emissions for India and Australia [PDF]
arXiv, 2021 Coal mines are globally an important source of methane and also one of the largest point sources of methane. We present a high-resolution 0.1deg x 0.1deg bottom-up gridded emission inventory for methane emissions from coal mines in India and Australia, which are among the top five coal-producing countries in 2018.
arxiv