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stripping ratio of al mine

A strip ratio or stripping ratio is an important measurement related to the openpit mining process It represents the amount of waste material also known as overburden that must be moved in

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  • Stripping ratio mining Britannica

    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 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

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  • Stripping ratio and pit limit Basic Mining Techniques

    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 3Usually for coal cubic meters m 3 or tonnes t are r for hard rock mines where the geology is usually complex with the presence of various rock types tonnage t is usually preferred

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  • Stripping Ratio Calculation In Mining

    what is stripping ratio coal mining Mine Equipments Stripping ratio Wikipedia the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to be handled in order to extract some volume of Get Price And Support Online stripping ratio in coal mining crusherasia

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  • stripping ratio of al mine Alla Tana del Lupo

    In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to be handled in order to extract some tonnage of ore For example a 31 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock

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  • Whats the average stripping ratio of open pit mines around

    The stripping ratio in a mine is chosen based on economics A high grade orebody can support a high stripping ratio A low grade ore body cannot support a high stripping ratio Thus you may have a range of stripping ratios from 11 to 115 or even more

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  • What Is a Stripping Ratio with picture

    Oct 26 2019 · Stripping ratio is a term that is derived from the mining industry and is used in reference to the openpit mining process The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process

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  • what is stripping ratio coal mining Mine Equipments

    High stripping ratio requires careful planning Mining Weekly 6 Dec 2002 This is due to the high stripping ratio of 191 at the mine meaning for every ton of reef there is 19 t of overburden Louw who learnt the mining

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  • How to calculate stripping ratio

    Sr Thickness of waste rock Thickness of coal For instance If the thickness waste rock overburden is 100m and the thickness of coal is 50m then stripping ratio would be 21 That means one m3 cubic meter of coal would need mining two m3 of waste rock

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  • Understanding Iron Ores and Mining of Iron Ore – IspatGuru

    Apr 03 2015 · The economic stripping ratio varies widely from mine to mine depending upon a number of factors In the case of direct shipping ores it may be as high as 61 or 71 In the case of low grade ore a stripping ratio of less than 151 is often considered as an economic limit

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  • Stripping Ratio Calculation In Mining

    what is stripping ratio coal mining Mine Equipments Stripping ratio Wikipedia the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to be handled in order to extract some volume of Get Price And Support Online stripping ratio in coal mining crusherasia

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  • stripping ratio of al mine Alla Tana del Lupo

    stripping ratio of al mine stripping ratio of al mine Stripping Ratios What are They and Why are They A strip ratio or stripping ratio is an important measurement related to the openpit mining process It represents the amount of waste material also known as overburden that must be moved in

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  • Breakeven stripping ratio Britannica

    In coal mining Contour strip mining If the breakeven 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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  • Stripping Ratio Mineral Production Activities

    6 Stripping ratio The main factor in designing a n open pit mine which largely determines the cost of mining is the stripping ratio Stripping is the removal of waste rock from above and around the orebody Stripping ratio is defined as the tonnage of waste rock to be mined divided by the tonnage of ore to be mined from the pit

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  • Stripping ratio Article about stripping ratio by The

    With an exceptionally low lifeofmine stripping ratio of 05 times lower in the early years QB2 is expected to provide 300000 metric tons mt of copper equivalent production per year for the first five years of mine life

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  • strip ratio in coal mining Mine Equipments

    Stripping ratio Wikipedia the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to

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  • Understanding Iron Ores and Mining of Iron Ore – IspatGuru

    Apr 03 2015 · Stripping ratios increase with the quality of the ore being mined and cost factors related to beneficiation and transportation The economic stripping ratio varies widely from mine to mine depending upon a number of factors In the case of direct shipping ores it may be as high as 61 or 71 In the case of low grade ore a stripping ratio

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  • IFRS First Impressions KPMG

    average lifeofmine stripping ratio approach while others expense such costs as incurred or follow the US GAAP approach of allocating all production stripping costs to inventory produced in the period For companies that currently expense these costs the interpretation will mean not only a change in

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  • Overburden Removal Surface Mining

    Jul 21 2017 · However in hard rock mining to define the stripping ratio in the example of Fig 1 consider mining of the ore ABC at depth h Having defined the slope angle at this mine section the waste overburden section AICD must be re moved The ratio of this overburden stripped to mine the ore is known as the average stripping ratio SR

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  • Stripping Ratios Pit Limits Cutoff Grade Optimization

    Stripping Ratios Pit Limits Cutoff Grade Optimization

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  • Managing risk and waste mining in longterm

    of products ore and waste are removed to meet the mine’s demand The optimal schedule maximizes the net present value NPV of the project subject to constraints including • feasible combinations of ore and waste production stripping ratio and • ore production rates that meet mill feed requirements

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  • Major Mines Projects Moatize Mine

    Opencut mine was developed directly by Vale Operations started in August 2011 and are expected to reach a nominal production capacity of 22 Mtpy considering the Moatize expansion comprised of metallurgical and thermal coal and the Nacala Logistics Corridor rampup

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  • ECONOMIC ASSESSMENT AND MINE PRODUCTION

    In the economic evaluation variables as the breakeven cutoff grade BCOG stripping ratio and optimal cutoff grade OCOG will be considered in order to determine the Net Present Value NPV Internal Rate of Return IRR and mine life The BCOG is the minimum grade

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  • How do you calculate the stripping ratio Answers

    How do you calculate the stripping ratio Its a ratio of waste extracted at a mine and is expressed as Total extracted Mineral for plant Mineral for plant m0id

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  • Stripping Ratio Calculation In Mining

    what is stripping ratio coal mining Mine Equipments Stripping ratio Wikipedia the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to be handled in order to extract some volume of Get Price And Support Online stripping ratio in coal mining crusherasia

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  • Determining Stripping Ratio Basic Mining Techniques

    The maximum allowable Stripping Ratio SR max defines break even stripping ratio BESRThis represents the highest possible units of waste that can be handled If the SR exceeds the BESR then the operation will be uneconomical as the income generated by the ore is insufficient to offset the costs incurred in mining

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  • Breakeven stripping ratio Britannica

    In coal mining Contour strip mining If the breakeven 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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  • TVBIP Ratio Explained The Economics of Oil Sands Mining

    Most mined oil sands deposits are located within 50 meters from the surface The strip ratio SR is the simplest measure of mining efficiency Defined as the weight of overburden or waste ore divided by the weight of oil sands ore a strip ratio of 2 is considered high but feasible if the ore grade is high enough

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  • strip ratio in coal mining Mine Equipments

    Stripping ratio Wikipedia the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to

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  • How do you calculate stripping ratio for Open Pit Mines

    How do you calculate stripping ratio for Open Pit Mines The two basic types of mines are the open pit mine and the underground mine They are quite selfexplanatory

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  • IFRIC 20 Stripping Costs in the Production Phase of a

    Aug 26 2010 · IFRIC 20 considers when and how to account separately for the benefits arising from the removal of mine waste materials overburden to gain access to mineral ore deposits as well as how to measure these benefits both initially and subsequently IFRIC 20 was issued on 19 October 2011 and applies to annual periods beginning on or after 1 January 2013

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  • IDENTIFIKASI PENYEBARAN DAN ANALISIS STRIPPING

    ii ABSTRAK IDENTIFIKASI PENYEBARAN DAN ANALISIS STRIPPING RATIO SR SEAM BATUBARA DENGAN MENGGUNAKAN DATA GEOFISIKA LOGGING PADA AREA PIT3 KONSESI TAMBANG BATUBARA DI KOHONG – KALIMANTAN TENGAH Oleh Ujang Suardi Telah dilakukan penelitian eksplorasi Geofisika Logging di area eksplorasi PT Buena Persada Mining Services wilayah tambang

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  • Easy profit maximization method for openpit mining

    Easy profit maximization method for openpit mining Author links open overlay panel C Dinis da the tonnages of ore and waste rock stripping ratios and profit estimates for different production levels If cost evaluations of essential mine operations are available such as ore mining waste removal ore concentration transportation

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  • DETERMINATION OF ULTIMATE PIT LIMITS IN OPEN

    Open pit mine planning is a procedure that can be started just after ultimate pit determination and cutoff grade calculation which both of them directly depend on final product price of the mine Ultimate pit determination in each period of time is a function of financial affairs This function is well defined by BreakEven Stripping Ratio BESR

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  • Cost Models of Theoretical Mining Operations CostMine

    This mine is an open pit mine producing 5000 tonnes ore and 5000 tonnes waste per day Rock characteristics for both ore and waste are typical of those of granite or porphyritic material Operating conditions wage scales and unit prices are typical for western US mining operations All costs listed are in 2012 US

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  • A decision support system for determination of a

    With the same respect the NPV of all UPL alternatives are estimated According to the results UPL1 is the smallest pit limit and it contains 60 Mt of ore with a stripping ratio of 146 UPL13 is the largest one and it contains 768 Mt of ore while the stripping ratio is

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  • Surface Coal Mining Methods in Australia InTech

    Surface Coal Mining Methods in Australia Rudrajit Mitra and Serkan Saydam operating at higher stripping ratios Westcott et al 2009 dragline strip mine and techniques such as throw blast and doze assist can also be incorporated A good example of this design is

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  • Measurement of blast damage Office of Surface Mining

    Measurement of blast damage Introduction Although blasting remains the period required by the mine age by the mining industry raises the issue of its effective measurement by simple reliable and robust techniques al 1994 • the stripping ratio can be in

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