Results 71 to 80 of about 653,647 (206)

Investigation on characterization and liquefaction of coals from Tavan tolgoi deposit

Mongolian Journal of Chemistry, 2014
On the basis of proximate, ultimate, petrographic and IR analysis results have been confirmed that the Tavan tolgoi coal is a high-rank G mark stone coal.
B Purevsuren, S Jargalmaa, B Bat-Ulzil, B Avid, T Gerelmaa   +4 more
doaj   +1 more source

Valuing the Non-Market Impacts of Underground Coal Mining [PDF]

This paper has been published in a peer-reviewed journal as: Gillespie, R. & M. E. Kragt (2012). "Accounting for nonmarket impacts in a benefit-cost analysis of underground coal mining in New South Wales, Australia." Journal of Benefit-Cost Analysis 3(2):
Bateman, Greene, Hanley, Lambert, Trigg, van Bueren, Windle   +6 more
core   +2 more sources

Study on dust reduction at source technology based on coal particle movement control [PDF]

MATEC Web of Conferences
Dust control during the transfer process in coal preparation plants presents a significant challenge. To address this problem, a model was developed to analyze dust detachment and adhesion as well as a kinematic model for the coal transfer process.
Li Zhiyong, Yao Kaixuan, Shi Qishuo
doaj   +1 more source

Study on the characteristics of secondary oxidation and the key reactive groups of fire area coal by different cooling rates

Case Studies in Thermal Engineering
In order to reveal the effects of different cooling rates (slow and rapid) on the secondary oxidation characteristics of coal in coalfield fire area (primary heating to 180 °C).
Xun Zhang, Ronghai Sun, Bing Lu, Ge Huang, Ling Qiao, Huimin Liang   +5 more
doaj   +1 more source

Distribution model, depositional environment and facies of coal in the AE field, Kutai Kartanegara area, East Kalimantan [PDF]

E3S Web of Conferences
The AE field is a planned coal mining area in Kutai Kartanegara, East Kalimantan. A preliminary analysis of coal and non-coal lithology conditions, which act as constituents of the AE Field, must be carried out to determine the next step in the mining ...
Sutedjo Taufiq Erlangga, Pambudi Setyo, Listyani R.A.T., Sugarbo Oky   +3 more
doaj   +1 more source

Enhancing the Energy Content of Melawan Coal through H₂SO₄ and NaOH Demineralization

Indonesian Journal of Chemistry
The objective of this study was to compare the calorific values, proximate analysis, ultimate analysis, SEM-EDX, XRF, FTIR spectroscopy, and TGA of the control feedstock and coal samples treated with different acid-alkali formulations.
Aliyu Buba Ngulde, Wan Azlina Wan Ab Karim Ghani, Nazmi Mat Nawi, Umer Rashid, Kiman Silas   +4 more
doaj   +1 more source

Cartels, managerial incentives, and productive efficiency in German coal mining, 1881-1913 [PDF]

In this paper, we evaluate the impact of cartelisation and managerial incentives on the productive efficiency of German coal mining corporations. We focus on coal mining in the Ruhr district, Germany’s main mining area.
Carsten Burhop, Thorsten Luebbers
core  

Coal Analysis [PDF]

Scientific American, 1909
openaire   +2 more sources

Stationarity Changes in Long-Run Fossil Resource Prices: Evidence from Persistence Break Testing [PDF]

This paper considers the question of whether changes in persistence have occurred during the long-run evolution of U.S. prices of the non-renewable energy resources crude oil, natural gas and bituminous coal.
Aleksandar Zaklan, Anne Neumann, Jan Abrell   +2 more
core  

Energy Demand in Pakistan: A Disaggregate Analysis [PDF]

This study examines the demand for energy at disaggregate level (gas, electricity and coal) for Pakistan over the period 1972-2007. Over main results suggest that electricity and coal consumption responds positively to changes in real income per capita ...
Muhammad Arshad Khan, Usman Ahmad
core