break even stripping ratio example for coal mining in nepal

break even stripping ratio example for coal mining in nepal

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 and pit limit  Basic Mining Techniques

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    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

  • Stripping ratio in coal mining

    Stripping ratio in coal mining

    Stripping ratio 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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    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

  • What Is a Stripping Ratio with picture

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    Oct 26 2020 · 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 In relation to its application in the mining of ore the utility of the stripping ratio is the determination of the approximate ratio of

  • stripping ratio calculation in mining

    stripping ratio calculation in mining

    What is break even stripping ratio Answers We divide the overburden thickness by ore thickness to get the stripping ratio For example if we have an overburden thickness of 80m and ore thickness of 50 mthen the stripping ratio will be Key Financial Ratios to Analyze the Mining Industry

  • break even stripping ratio example for coal mining

    break even stripping ratio example for coal mining

    with picture Mar 03 2019 The stripping ratio is commonly used in the ore and coal mining process For example if the mining company must extract one part of ore to three and a half parts of waste in order to break even it stands to reason that the company will seek to look for mining sites where it can extract at least one part of ore to two and a half parts

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    Mining Mining Surface mining It has been estimated that more than twothirds of the world’s yearly mineral production is extracted by surface mining There are several types of surface mining but the three most common are openpit mining strip mining and quarrying These differ from one another in the mine geometries created the techniques used and the minerals produced

  • How to calculate stripping ratio  ResearchGate

    How to calculate stripping ratio ResearchGate

    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

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