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specific energy consumption of opencast coal mines

Blast-Casting Mechanism and Parameter Optimization of a ... - Hindawi

Blast-Casting Mechanism and Parameter Optimization of a Benched Deep-Hole in an Opencast Coal Mine: During the research on bench deep-hole blast casting, the blast-casting parameters are directly related to the blast-casting results, so it could reveal the mechanism for improving the effect thereof. Based on the principle of the plane charge method, both the stress wave and detonation gas were ...

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Overview of Coal Mining in India: Investigative Report from ... - Sanhati

Around 75 per cent of total coal stock is consumed by the energy sector. Global market prices for coking coal increased by 70 per cent during 2010 - the regime in India is forced to import coal for energy production and at the same time put more pressure on production costs 'at home'.

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Estimating emissions and energy from coal mining guideline

Standard conditions, STP Standard temperature (15° = 288°K) and pressure (101.325 kPa) per subsection 2.32(7) of the NGER Measurement Determination. t Tonnes (metric) tpa Tonnes per annum U/G Underground GPO Box 621 Canberra ACT 2601 1300 553 542 [email protected] 6 Disclaimer

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COMMERCIAL MINING OF COAL - Press Information Bureau

gasification and coal liquefaction-based energy consumption has been done to make coal mining an environmentally sustainable venture, with reduced carbon footprints. 17 Commercia Mining o Coa ... Out of these 19 mines, 11 are opencast, 5 are underground mines and remaining 3 are a mix of underground and opencast mines. The average

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Companies find use for abandoned underground coal mines - Mining Weekly

While Strydom believes that the conversion of previously closed underground coal mines into opencast mines is integral to the industry, he highlights the fluctuating coal price as a significant...

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opencast coal mining cost - Traxo

Nov 01, 1993 Keywords: Opencast coal mining; Environmental costs; UK energy policy The 1980s saw a marked increase in opencast coal mining in the UK. Between 1979 and 1992, annual production of opencast coal rose by over 50% to 19 million tonnes,1 of which about 16 million tonnes are produced by British Coal, the rest by a small private sector.

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U.S. Energy Information Administration - EIA - Independent Statistics ...

Another method, area mining, occurs on relatively flat terrain. Contour strip mining accounted for more than half of the surface mine closures between 2008 and 2017. Open-pit coal mining is a combination of contour and area mining methods and is used to mine thick, steeply inclined coalbeds. In contrast to other forms of mining, open pit mines ...

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Coal Mining and Local Environment: A Study in Talcher Coalfield of India

Talcher coalfield, bounded by latitudes 23*53′N and 21*12′N and longitudes 84*20′E and 85*23′E, covers an area of about 1800 km 2. It has 8 opencast and 3 underground coal mines in its 5 coal areas, namely, Jagannath area, Bharatpur area, Lingaraj area, Hingula area, and Talcher area.

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Reclamation of Degraded Landscapes due to Opencast Mining

3.5. Interdisciplinary dimension of reclamation. All mining operations, due to their nature, have negative impacts on the cultural landscape. And opencast mining activities are not an exception, as they drastically change the former dynamic equilibrium of the landscape, leading to the formation of new ecosystems.

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Managing water consumption in mining - Mining Technology

Minera Esperanza's copper and gold mining operation, located 180km from the city of Antofagasta in Chile, is one of the driest places in the world. The mine needs approximately 20m cubic metres of water a year to run. To meet these demands the mine's processing plant was designed to use untreated seawater. A supply pipe network was ...

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Licenced: the Aberpergwm coal mine extension

Each year, the UK government releases a Digest of UK Energy Statistics report. The most recent was released in July 2022, covering the year 2021. The steady decrease of coal in recent years was not so pronounced between 2020 and 2021. There was a record low use of coal for energy generation in 2020.

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Coal mining projects - Coal 2020 - Analysis - IEA

First coal from the AUD 1 billion opencast mine is expected in 2022. The first stage has an expected production rate of 4.5 Mtpa of met coal. Subsequent expansion could increase production to 15 Mtpa. The construction of an 18 km rail spur, connecting the mine to the Norwich Park Branch Railway, is also planned for 2021.

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analyses of diesel use for Mine Haul and transport operations

As of 2008-09, 40 reporting EEO companies in the mining sector consumed 308 PJ of energy of which 52.5 PJ was diesel (17%) for haulage and electricity generation. These EEO mining companies had identified 3 PJ (or 6%) worth of savings directly related to diesel use. These companies adopted 66% of these identified savings in diesel use.

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Impacts of Coal mining: a Review of Methods and Parameters Used in India

Jamal et al (1991) 82 had reported on the acid mine drainage component of open cast coal mining operations. Health and Society. Very few studies have been reported on the societal and human health effects of coal mining. Kumar et al. (2012) 83 used high resolution satellite data to study the area of settlement at risk in the Jharia coalfields ...

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Coal mining - Global Energy Monitor

When coal seams are too deep underground for opencast mining, they require underground mining, a method that currently accounts for about 60 percent of world coal production. [6] There are six principal methods of underground mining. Longwall mining Longwall mining accounts for about 50 percent of underground production.

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Benchmarking energy consumption for dump trucks in mines

Dump trucks are used for transportation in opencast mines and consume about 32% of the total energy use in mines. This paper presents a generic model to benchmark energy consumption for dump trucks...

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Methods and Techniques for Energy Efficiency Assessment of ...

at the same time, the specific fuel consumption in the working fleets of dump trucks in the open- cast mines is reduced by 2.68 and 2.3%, respectively, which is accompanied by an increase in the efficiency of the mining and haulage systems and by a decrease in the specific oper- ating costs by 2.11% and 0.81%, respectively, as follows from .

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Energy Performance of Dump Trucks in Opencast Mine

The energy consumption in dump trucks accounts for about 32 % of the total energy requirement in opencast mines. In this paper a modeling framework is developed to analyse a generic mine transportation problem with multiple dump trucks operating between multiple crushers and excavators.

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Autonomous mining vehicle test at SA coal mine successfully completed

Further, during the PoC, he explains that the company saw a 100% increase in productivity, with 120 loads a day with autonomous trucks, compared with the 60 loads a day in normal trucks. In terms...

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Energy consumption share of coal 2030 | Statista

This statistic shows the share of coal in global energy consumption by sector in 2006, with forecasted figures for 2015 and 2030. It is forecasted that coal will account for a 42 percent share of...

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Opencast coal mining: identifying the issues - JSTOR

Opencast coal mining: identifying the issues ... In the second session, the focus switched to markets. It contained two papers by energy consultants: ' The market for opencast coal ' (M Prior) and ' The international coal market and the UK '(W H Fischer). ... and the role of regional planning as a specific state activity. Secondly, we need to ...

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Number of operating coal mines by country CEE 2022 | Statista

Permitted coal reserves in opencast mines in Scotland 2012-2014, by district Opencast coal reserves: permitted, not yet in production Great Britain (UK) 2014 U.S. coal mining industry jobs lost by ...

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How flooded coal mines could heat homes - BBC Future

Future Planet | Energy. How flooded coal mines could heat homes. (Image credit: Coal Authority) By Alasdair Lane 6th July 2021. A quarter of the UK's homes sit above abandoned coal mines, long ...

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Research | Vladislav Kecojevic | West Virginia University

Energy Consumption Control in Opencast Coal Mining. Proceedings of the 7th International Symposium on Mine Planning and Equipment Selection. Calgary, AB, Canada. pp. 41-45. Simic R., Gomilanovic, M., Kecojevic, V. (1998). Wells Database for Dewatering of Coal Open Pits. Proceedings of the 5th International Symposium on Continuous Mining Systems.

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Human chain to protest coal mining in Germany and Poland

The country gets 90% of its electricity from coal, much of it domestically produced. The government's draft energy strategy foresees a dominant role for coal for decades. The strategy explores options to ramp up renewables or nuclear, but its favoured scenario involves getting 60% of electricity from coal in 2050. That means exploiting new ...

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Special Issue "Optimization and Improvement of Energy Consumption and ...

Aug 11, 2022Mechanization systems used in mining works are adapted to the place and method of mining (opencast, underground, or borehole mining), the specificity of the deposit, and the manner of its deposition. ... and the slewing time in the open pit coal mine was measured. In the second one, the values of the specific energy (SE) consumption for cutting ...

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Bioconversion of coal to methane by microbial communities from soil and ...

The Xilingol grassland ecosystem has abundant superficial coal reserves. Opencast coal mining and burning of coal for electricity have caused a series of environmental challenges. Biogenic generation of methane from coal possesses the potential to improve economic and environmental outcomes of clean coal utilization. However, whether the microbes inhabiting the grassland soil have the ...

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Who'd buy a coal mine? Two very different bids - Climate Home News

The state-owned Vattenfall is selling opencast lignite mines and 8GW worth of power stations in Germany to green its image. Together, these emit more than the whole of Sweden. Thrown into the deal are advanced plans for five new mines, which campaigners fear will go ahead under another owner - Czech energy group CEZ has expressed an interest.

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Explosives and blasting in underground coal mining - SlideShare

for blasting on cut faces the following conditions must be compiled with: the length of the shot hole should be at least 15cm (6 inches) less than the depth of the cut. the detonators in a round should be fired simultaneously, preferably in series. the maximum charge in hole should not exceed 800gms for pi explosives and 1000gms for p3 and p5 .

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500TPH Opencast Mine Twin Shaft Mineral Sizer - ec21

500TPH Opencast Mine Twin Shaft Mineral Sizer. Introduction: Opencast Mine Twin Shaft Mineral Sizer mainly crushes raw coal mine from opencast working, coal preparation plant and thermal power plant, etc. 2PLF Series Mineral Sizer is composed of motor, safe coupling, gear reducer, gear coupling, frame, tooth roller and tooth roller cover.

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Menar extends opencast coal operations - Mining Weekly

Mineral resources investment group Menar's subsidiary Canyon Coal is ploughing ahead with plans to begin the development of two new coal mines - De Wittekrans near Hendrina, in Mpumalanga, and ...

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Health and safety at opencast mines, alluvial mines and quarries

Health and safety quarry essentials pocket guide. This guide is taken primarily from the main health and safety at opencast mines, alluvial mines, and quarries guidelines, and focuses on managing risks at quarries for operators, managers, and workers. PDF. Quarry essentials pocket guide (PDF 2.5 ) Last updated 7 September 2017 at 13:27.

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Benchmarking energy consumption for dump trucks in mines

The minimum SFC of 89g/t is estimated for a mine transport system with three excavators and two crushers. The case study shows a potential fuel saving of 17%. The modelling framework developed can be used to set rational targets for energy consumption for dump trucks in mines. Suggested Citation

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The development and characterization of a novel coagulant for dust ...

For economic and geographical reasons, not all Chinese coal mines are located underground, with approximately 10% being classed as open-cast mines (Du and Li, 2013; Khan and Javed, 2012).Open-cast coal mines have a number of advantages, such as full resource utilization, suitability for large-scale mechanized excavation, high labor productivity, favorable working conditions, and safer ...

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Ecological Restoration of a Loess Open-Cast Mining Area in China ... - MDPI

Open-cast coal mining in China has developed rapidly due to its obvious advantages over underground mining. However, it may have negative ecological effects, such as biodiversity loss, water shortage, and soil erosion. Identifying and protecting the key areas with high importance for ecological sustainability are great challenges. The construction of an ecological security pattern (ESP) can ...

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Mining | Make In India

5th September 2022: Overall Coal Production Increases by 8.27% to 58.33 mn Ton in August, 2022. Read More . 1st September: Coal Ministry Aims to Enhance Coal Production to 1. 23 Bn Ton by 2024-25. Read More . 18 August 2022: Last date of applications under the Production Linked Incentive (PLI) Scheme for Specialty Steel extended up to 15.09.2022 Read More

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Bioconversion of coal to methane by microbial communities from soil and ...

However, compared with underground coal seam environments, little is known about the potential of coal bioconversion to methane from an opencast coal mine by indigenous microbial communities cultured from soils covering and surrounding this mine. In China, more than 400 opencast coal mines are in operation with a coal production of 650,000,000 t/a.

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Life Cycle Assessment of opencast lignite mining

The life cycle phase of fossil fuel extraction is mainly considered in the LCA when evaluating the energy production processes. It is then only one of many unit processes, which contribute to the blurring of mining-relevant results. There are few items in the literature focusing exclusively on the lignite mining phase and analysing the specific mining conditions and associated environmental ...

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coal mining - Choosing a mining method | Britannica

The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic, and social factors. The technological factors ...

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Coal consumption in India: We are already late on fair green transition

Coal demand in the country is yet to peak. The draft Economic Survey 2021-22 projects coal demand in the range of 1.3-1.5 billion tonnes by 2030, an increase of 63 per cent from the current demand ...

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