strip ratio in coal mining

  • Stripping Ratios: What are They and Why are They

    2018-10-31 · A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also

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  • What Is a Stripping Ratio? (with picture) - wiseGEEK

    The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. In relation to its application in the mining of ore, the utility of the stripping ratio is the determination of the approximate ratio of waste material that must be moved in order to reach a certain ratio of ore.

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  • Determining Stripping Ratio - Basic Mining Techniques

    2016-4-4 · The maximum allowable Stripping Ratio (SR max) defines break even stripping ratio (BESR).This represents the highest possible units of waste that can be handled. If the SR exceeds the BESR then the operation will be

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  • Stripping ratio and pit limit - Basic Mining Techniques

    2017-7-26 · The units for stripping ratios can vary and usually depends on the geological properties of the deposit and the commodity mined. It can be expressed in tonnes (t), or cubic meters (m 3).Usually for coal, cubic meters (m 3) or tonnes (t) are used.However, for hard rock mines where the geology is usually complex with the presence of various rock types, tonnage

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  • break-even stripping ratio | Britannica

    In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

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  • (PPT) Calculating Stripping Ratios for Area Strip Mines ...

    Calculating Stripping Ratios for Area Strip Mines Mnge 315 ©Dr. B. C. Paul spring 2003 revised 2010 Note – These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as “Elements of Practical Coal Mining” and SME’s “Surface Mining” were specifically referenced fStripping Ratio as a ...

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  • Rational economic stripping ratios: International Journal ...

    2008-4-2 · ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block.

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  • (PDF) Stripping Ratios, Pit Limits & Cutoff Grade ...

    Optimum cut-off grade policy for open pit mining operations through net present value algorithm considering metal price and cost escalation By Raul Cezar Maximizing the net present value by applying an optimal cut-off grade for long-term planning of the copper open pits

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  • Blasting Principles - Orica

    Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to

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  • (PDF) Surface Mine Design - ResearchGate

    2022-1-15 · "Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden). It is most commonly used to mine coal and

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  • In coal mining what is a good strip ratio? - Answers

    2010-7-29 · 1. Overburden O/B2. Coal / ore3. Interburden (or parting), I/B4. WasteSometimes:Waste = O/B + I/B(look at the context)Waste (O/B + I/B) needs to be removed to get access to coal / oreWhat Is ...

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  • (PPT) Calculating Stripping Ratios for Area Strip Mines ...

    Calculating Stripping Ratios for Area Strip Mines Mnge 315 ©Dr. B. C. Paul spring 2003 revised 2010 Note – These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as “Elements of Practical Coal Mining” and SME’s “Surface Mining” were specifically referenced fStripping Ratio as a ...

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  • break-even stripping ratio | Britannica

    In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

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  • Rational economic stripping ratios: International Journal ...

    2008-4-2 · ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block.

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  • Mine Plan - an overview | ScienceDirect Topics

    Strip ratios for minable coal reserves range from 1:1 to over 35:1. A decrease in the strip ratio will decrease the cost of producing the coal. Underground mining methods are employed when the amount of overburden that would have to be removed by surface mining methods is cost prohibitive (i.e., the strip ratio is beyond an economic limit).

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  • Blasting Principles - Orica

    Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to

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  • ASX: ATU 16 April 2020 ELAN PROJECT SCOPING STUDY

    2020-4-15 · Mining - total Total ROM coal mined Mt 126.2 126.2 Total waste mined Mbcm 541.4 541.4 Strip ratio (ROM) bcm/t 4.3 4.3 Product output Processing yield % 60 60 HCC production Mtpa saleable 6.0 4.5 Total product coal Mt 76 76 The implied product coal LOM strip ratio for the Elan Project is approximately 7.1 bcm/t HCC. This product strip ratio is ...

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  • (PDF) Surface Mine Design - ResearchGate

    2022-1-15 · "Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden). It is most commonly used to mine coal and

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  • Surface Coal Mining Methods in Australia

    2018-9-25 · Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and

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  • Glossary of Mining Terms - Coal Education

    2018-1-4 · A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled

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  • Stripping ratio and pit limit - Basic Mining Techniques

    2017-7-26 · The units for stripping ratios can vary and usually depends on the geological properties of the deposit and the commodity mined. It can be expressed in tonnes (t), or cubic meters (m 3).Usually for coal, cubic meters (m 3) or tonnes (t) are used.However, for hard rock mines where the geology is usually complex with the presence of various rock types, tonnage

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  • In coal mining what is a good strip ratio? - Answers

    2010-7-29 · 1. Overburden O/B2. Coal / ore3. Interburden (or parting), I/B4. WasteSometimes:Waste = O/B + I/B(look at the context)Waste (O/B + I/B) needs to be removed to get access to coal / oreWhat Is ...

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  • stripping ratio | mining | Britannica

    Other articles where stripping ratio is discussed: coal mining: Choosing a mining method: calculated with the aid of stripping ratios, which represent the amount of waste material that must be removed to extract a given amount of coal. Stripping ratios can also consider the selling price of coal, and a certain minimum profit can be added to the total cost of producing and

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  • Strip Mining: A Destructive Way of Coal Extraction ...

    2017-3-12 · Surface or strip mining damages and pollutes ecosystems to a great degree. This is because by definition the process of strip mining involves striping away trees, plants and topsoil so that the coal can be accessed underneath.

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  • ASX: ATU 16 April 2020 ELAN PROJECT SCOPING STUDY

    2020-4-15 · Mining - total Total ROM coal mined Mt 126.2 126.2 Total waste mined Mbcm 541.4 541.4 Strip ratio (ROM) bcm/t 4.3 4.3 Product output Processing yield % 60 60 HCC production Mtpa saleable 6.0 4.5 Total product coal Mt 76 76 The implied product coal LOM strip ratio for the Elan Project is approximately 7.1 bcm/t HCC. This product strip ratio is ...

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  • Structure Partition and Reasonable Width Determination

    2021-7-7 · Therefore, strip mining is widely used at coal mines in China. In case of coal seam mining, the stresses of the surrounding rocks are redistributed, causing loosening deformation and failure fractures [2–5].

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  • Mining Conference - Teck

    2021-11-2 · expectation that our coal reserves support approximately 27 million tonnes of production in 2021 and beyond; strip ratio expectations; cost of sale targets and the impact of RACE21TM in our steelmaking coal business; benefits of

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  • One of India's largest Iron Ore Mining Company | Essel

    2021-7-14 · Tonne with rated capacity of 5.4 Mill. Tonne and average strip ratio of 6.06 CuM/Ton. This is a greenfield mine and project life is 33 years. COMMERCIAL COAL DIVISON. With the recent reform in Mining Sector, Government of India (GoI) has completely opened the Coal sector paving the way for auction of Coal Mine for sale of Coal.

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  • Revuboè Coal Mine, Tete - Mining Technology

    Revuboè coal mine is located in the Moatize Basin, Tete Province of Mozambique. The mine is owned by Talbot Group (58.9%), Nippon Steel & Sumitomo Metal Corporation (33.3%) and Posco (7.8%). It is located along-side Rio Tinto’s

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  • Supply – Coal 2020 – Analysis - IEA

    The three major coal mining regions of Inner Mongolia, Shanxi and Shaanxi provided around 70% of China’s coal output in 2019. Counting in the other coal mining regions of Xinjiang, Guizhou, Anhui, Shandong and Henan, the share is about 89%. Production of large and medium-size mines in the three main regions have expanded, while output of ...

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