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Wyświetlanie 1-3 z 3
Tytuł:
Development of sustainability assessment method of coal mines
Autorzy:
Burchart-Korol, D.
Krawczyk, P.
Czaplicka-Kolarz, K.
Turek, M.
Borkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/92001.pdf
Data publikacji:
2014
Wydawca:
Główny Instytut Górnictwa
Tematy:
sustainability
hard coal mine
life cycle assessment (LCA)
cost-benefit analysis
rozwój zrównoważony
kopalnia węgla kamiennego
analiza cyklu życia
analiza kosztów i korzyści
Opis:
Purpose This paper presents an algorithm developed to assess all aspects of sustainable development for hard coal mines. Additionally, an algorithm to assess the environmental efficiency and cost efficiency of mining production processes was presented. Methods To develop the computation algorithm, detailed models were proposed for environmental assessments using Life Cycle Assessment (LCA), whereas Cost-Benefit Analysis (CBA) was proposed for economic and social assessments. Results The algorithm developed is used when preparing a ranking of hard coal mines which considers the main aspects of sustainable development – environmental, economic and social. The tool also enables the performance of both environmental and cost assessment for particular unit processes of mining production. Practical implications The practical purpose is to devise an algorithm that will perform both partial and aggregated assessment of all aspects of the sustainable development of coal mines in Poland. Originality/ value It is the first method which includes all aspects of sustainable development and considers the process approach to assess coal mines.
Źródło:
Journal of Sustainable Mining; 2014, 13, 4; 5-11
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of admixtures on the performance of soundless chemical demolition agents and implications for their utilization
Autorzy:
Maneenoi, Nattamon
Bissen, Raphael
Chawchai, Sakonvan
Powiązania:
https://bibliotekanauki.pl/articles/2201389.pdf
Data publikacji:
2022
Wydawca:
Główny Instytut Górnictwa
Tematy:
SCDA
Portland cement
chemical accelerators
viscosity enhancing agents
fracture onset
cost analysis
cement portlandzki
przyspieszacze chemiczne
środki zwiększające lepkość
początek złamania
analiza kosztów
Opis:
Soundless Chemical Demolition Agents (SCDAs) are an environmentally friendly and safer alternative to traditional rock fragmentation methods. Admixtures are used to change the rheological properties and performance of SCDAs. This study aimed to investigate the effect of various concentrations of chemical accelerators (chloride salts) and viscosity enhancing agents (VEAs: Xanthan gum, Guar gum, and Gellan gum) on the fracture onset compared to an unmodified SCDA (BRISTAR 100®). All experiments were conducted on Portland Type 1 (OPC 1) cement blocks. The flowability of the mixtures was determined by mini-slump tests. Results show that 4wt% MgCl2 and 3wt% CaCl2 have accelerated the fracture onset by 47.4% and 61.2%, respectively. VEAs have a decelerating effect, which is mitigated by the addition of the aforementioned chloride salts. Combining 4wt% MgCl2 with 0.2wt% Xanthan gum reduced the fracture onset time by 66.8%. A cost analysis shows that the initial price of the SCDA mainly determines a potential cost reduction by using admixtures. For a low-cost SCDA, the focus is likely to shift to saving time. This study can serve as a basis for future studies to further improve performance and cost as well as diversify the range of applications for SCDAs.
Źródło:
Journal of Sustainable Mining; 2022, 21, 2; 93--111
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life cycle cost estimation and environmental valuation of coal mine tailings management
Autorzy:
Adiansyah, J. S.
Rosano, M.
Biswas, W.
Haque, N.
Powiązania:
https://bibliotekanauki.pl/articles/92038.pdf
Data publikacji:
2017
Wydawca:
Główny Instytut Górnictwa
Tematy:
tailings disposal
economic assessment
environmental valuation
net present value
benefit-cost analysis
składowanie odpadów
ocena ekonomiczna
ocena środowiskowa
wartość bieżąca netto
analiza kosztów i korzyści
Opis:
Sustainable mining management is increasingly seen as an important issue in achieving a social license to operate for mining companies. This study describes the life cycle cost (LCC) analysis and environmental valuation for several coal mine tailings management scenarios. The economic feasibility of six different options was assessed using the Net Present Value (NPV) and Benefit-Cost Analysis (BCA) methods. These options were belt press (OPT 1), tailings paste (OPT 2), thickened tailings (OPT 3), and OPT 1 with technology improvement and renewable energy sources (OPT 1A-C). The results revealed that OPT 1A (belt press technology with stack cell flotation) was the first preference in terms of LCC while OPT 1C (belt press technology with stack cell flotation and 10% wind energy) generated the highest benefits value (BCA) compared to the other options. The LCC and BCA components and the volume of GHG emissions were used to determine the best option. Normalization of these three elements resulted in the selection of Option 1C as being the most cost-effective option.
Źródło:
Journal of Sustainable Mining; 2017, 16, 3; 114-125
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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