Investment Project Analysis in the Crusher Replacement Plan DOI Creative Commons

Restu Yanuar Salam,

Taufik Faturohman

Asian Journal of Engineering Social and Health, Journal Year: 2024, Volume and Issue: 3(8), P. 1869 - 1882

Published: Aug. 22, 2024

The global coal market experienced three turbulent years, with a sharp decline in demand during the Covid-19 pandemic, followed by rebound post-Covid and after Russia's invasion of Ukraine. In 2022, reached an all-time high 8,415 million metric tons, driven growth China India, continued to rise slightly 1.4% 8,536 Mt 2023. downward trend prices poses challenges for mining companies, including PT Berau Coal Site Binungan Mine Operation (BMO). This study aims address frequent breakdowns CR12 crusher at BMO, which result increased maintenance costs, production downtime, reduced overall efficiency. Using Total Cost Ownership (TCO) calculations Discounted Cash Flow (DCF) method, Net Present Value (NPV) several secondary brands—Joy (existing), MMD, Shumar—were compared. Results show that Joy has NPV -$5,822,030, MMD -$4,527,456, Shumar -$2,559,450. negative indicates total where smaller is preferable. Incremental $1,294,575, $3,262,581. Based on this analysis, was selected as replacement due its low cost

Language: Английский

Molecular dynamics study of CH4 adsorption in coal triggered by cyclic thermal treatment DOI

Xuefen Lv,

He Li, Shiliang Shi

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135041 - 135041

Published: Feb. 1, 2025

Language: Английский

Citations

0
Environmental Implications of Heavy Metal Deposition and Particulate Matter in Coal Mining Ecosystems DOI Open Access
Deepak Bhanot, Yogesh Jadhav,

G.P. Tiwari

et al.

Natural and Engineering Sciences, Journal Year: 2025, Volume and Issue: 10(1), P. 325 - 339

Published: April 1, 2025

Heavy metals and PM are among the contaminants that coal mining operations discharge into surroundings in large quantities, harming human health environmental pollution. The research aims to examine spatial sequential deviations of air heavy metal deposition regions. Additionally, it determine major causes pollution evaluate how affected hazards atmosphere public well-being. To identify sources data on quality, advanced techniques employed. Over a specific period, pollutants such SO2, NO2, CO, PM2.5 measured at various locations. Both geographical distribution percentage measured. According research, main include wind-blown road dust, active mine fires, vehicle emissions, activities. order mean concentrations is Fe > Cu Zn Mn Pb Cr Cd Ni As Hg. There threats ecological well-being from high particulate substances hazardous metals. results emphasize quickly strong control regulations sustainable methods needed. Minimizing negative effects ecosystems requires reducing emissions mining, setting dust measures place, enforcing stronger laws.

Language: Английский

Citations

0
Bibliometric Analysis of Multi-Criteria Decision-Making (MCDM) Methods in Environmental and Energy Engineering Using CiteSpace Software: Identification of Key Research Trends and Patterns of International Cooperation DOI Creative Commons
Paweł Kut, Katarzyna Pietrucha-Urbanik

Energies, Journal Year: 2024, Volume and Issue: 17(16), P. 3941 - 3941

Published: Aug. 9, 2024

In the context of sustainable development and global challenges such as climate change energy security, this paper conducts a bibliometric analysis scientific journals on multi-criteria decision-making (MCDM) methods with an emphasis their applications in environmental engineering. The study used CiteSpace software program 6.2.R6 Advanced to analyze citation networks identify key publications, authors, research topics. simulations carried out made it possible main centers patterns international cooperation, pointing countries institutions involved MCDM research. results reveal areas greatest interest directions for future These can support scientists, researchers, policymakers making more informed decisions, contributing achievement Sustainable Development Goals.

Language: Английский

Citations

3
Investment Project Analysis in the Crusher Replacement Plan DOI Creative Commons

Restu Yanuar Salam,

Taufik Faturohman

Asian Journal of Engineering Social and Health, Journal Year: 2024, Volume and Issue: 3(8), P. 1869 - 1882

Published: Aug. 22, 2024

The global coal market experienced three turbulent years, with a sharp decline in demand during the Covid-19 pandemic, followed by rebound post-Covid and after Russia's invasion of Ukraine. In 2022, reached an all-time high 8,415 million metric tons, driven growth China India, continued to rise slightly 1.4% 8,536 Mt 2023. downward trend prices poses challenges for mining companies, including PT Berau Coal Site Binungan Mine Operation (BMO). This study aims address frequent breakdowns CR12 crusher at BMO, which result increased maintenance costs, production downtime, reduced overall efficiency. Using Total Cost Ownership (TCO) calculations Discounted Cash Flow (DCF) method, Net Present Value (NPV) several secondary brands—Joy (existing), MMD, Shumar—were compared. Results show that Joy has NPV -$5,822,030, MMD -$4,527,456, Shumar -$2,559,450. negative indicates total where smaller is preferable. Incremental $1,294,575, $3,262,581. Based on this analysis, was selected as replacement due its low cost

Language: Английский

Citations

0