Oct 31, 2018· 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 known as …

Get PriceThe stripping ratio (SR) refers to the amount of waste that must be removed for a given quantity of ore in open-pit mining. It is commonly expressed as: It is commonly expressed as: SR=Waste (tons ...

Get PriceIn 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 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock. Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit ton of ore, for example, 1.5:1 as opposed to 3:2.

Get PriceOther 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…

Get PriceStripping Ratio Calculation In Mining. Stripping Ratio Truck Mining - scribd. This value is the stripping ratio at which the costs of mining and processing the ore and stripping the waste are equal to the revenue from the ore.ore mining cost ($/t) .

Get PriceThe 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 (t) is usually preferred.

Get PriceAug 08, 2020· 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.

Get Price6. 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.

Get PriceOct 13, 2019· STRIPPING RATIO- Stripping Ratio can be defined as, “It is the ratio between waste & Ore/Mineral." What do you mean by Stripping Ratio??? WASTE = OVERBURDEN + INTERBURDEN Overburden is the ...

Get PriceThe 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 uneconomical as the income generated by the ore is insufficient to offset the costs incurred in mining.

Get PriceWe 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 m , then the stripping ratio will be ...

Get PriceApr 12, 2018· The Break Even stripping ratio is that S.R at which the costs of mining the ore (coal) and waste (w1+w2) are same as the revenue for that block of ore/coal. B.E.S.R refers only to the last increment mined along the pit wall. It is calculated for the point at which break even occurs and the necessary stripping is paid for by the net value of the ...

Get PriceAug 16, 2019 · In coal mining what is a good strip ratio The Q&A wiki In the construction, mining and utility equipment business, sales decreased .. of coal and overburden increased as coal mines with a truck and excavator bulk mining method with an average strip ratio of 4 The quasi strip mining approach is similar to that used in coal .

Get PriceJun 06, 2010· * We calculate the amount of waste that needs to be removed to get an amount of ore/coal . Miners Only ... Stripping ratio allows definition of this “breakeven” point. Switch to underground mining if your stripping ratio is more than BESR. a. …

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Get PriceA 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 1:1 to 1:15 or even more.

Get PriceThe 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. A better measure of mining economics is the TV:BIP ratio.

Get PriceIn 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.

Get PriceOct 01, 2013· The profit function can also be formulated in unit values (per ton or cubic meter of ore), by assigning a unit profit function L ′ ($/h), which is given by (2) L ′ = T U V − M − E R − B − F P. In all these variables, there are two geological characteristics, which have great importance: the stripping ratio R and the grade of ore T.It is therefore essential to determine what their ...

Get PriceIn 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 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock. Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit ...

Get PriceCalculating 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 SMEs Surface Mining were specifically referenced Stripping Ratio as a Fundamental

Get PriceIn 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.

Get PriceThe 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 uneconomical as the income generated by the ore is insufficient to offset the costs incurred in mining.

Get PriceJun 06, 2010· * We calculate the amount of waste that needs to be removed to get an amount of ore/coal . Miners Only ... Stripping ratio allows definition of this “breakeven” point. Switch to underground mining if your stripping ratio is more than BESR. a. …

Get PriceStripping 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 . 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

Get PriceIn 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 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock. Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit ...

Get PriceCalculating 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 SMEs Surface Mining were specifically referenced

Get PriceOct 01, 2013· The profit function can also be formulated in unit values (per ton or cubic meter of ore), by assigning a unit profit function L ′ ($/h), which is given by (2) L ′ = T U V − M − E R − B − F P. In all these variables, there are two geological characteristics, which have great importance: the stripping ratio R and the grade of ore T.It is therefore essential to determine what their ...

Get PriceIs Ore to Overburden ratio and Stripping ratio are same? Yes, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

Get PriceStripping 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 6:1 or 7:1. In the case of low grade ore , a stripping ratio ...

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Get PriceJan 09, 2016· vii) Stripping Ratio The ratio is most commonly expressed as: Strip Ratio (SR) is the mass of waste to be mined to obtain one unit mass of ore. Waste (tons) SR = ----- Ore (tons) For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

Get PriceFor conducting a mining project’s break even analysis, you first need to know about the operational expenses (OPEX).When the OPEX is known, you can calculate the mineral’s cut off grade, which is the break even grade, below which it is not economically viable to mine the ore.To find out how I come up with the cost price per tonne (OPEX) if a feasibility study isn’t available, I refer you ...

Get Pricegrade 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 Break-Even Stripping Ratio (BESR). Systematic studies on this approach were carried out by Lilico [1] and Koskiniemi [2]. Lerchs and ...

Get Pricepit gold mining project named “Coriorcco Gold”, including a project description, an explanation of the main operational parameters, and an economic evaluation of the project. In the economic evaluation, variables as the breakeven cutoff grade (BCOG), stripping ratio

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