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stripping ratio calculation in mining

Problem 6.2 (from page 178, Introductory Mining Chegg

Problem 6.2 (from page 178, Introductory Mining Chegg

Transcribed image text Problem 6.2 (from page 178, Introductory Mining Engineering) Calculate the maximum stripping ratio (SR.max = ?) and the overall stripping ratio (SRo = ?) for the open pit shown in Figure 2. given the following conditions Stripping Allowance 1.50/ton Stripping Cost 0.25/ton Pit Slope B = 65° Berm at top of ore a = 30 ft Surface inclination 25

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TUTORIAL EXAMPLES stripping ratios and cutoff grades

TUTORIAL EXAMPLES stripping ratios and cutoff grades

SOLUTION Breakeven cutoff grade = Mining cost/t ore concentrating cost per tonne ore (Metal price per tonne SRM costs per tonne metal) x recovery Mining cost per tonne ore = Mining cost per tonne material x (1 stripping ratio) Mining cost per tonne ore (1.47(11.5) = 3.68 Concentrating cost per tonne ore =

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mining engineering STRIPPING RATIO (S)

mining engineering STRIPPING RATIO (S)

Jun 06, 2010· a. SR measures the amount of waste that needs to be removed to get an amount of ore, just as we mine it. Note the amount! b. This will differ depending on time span under consideration. * Initial studies (feasibility) overall stripping ratio. * Current month incremental stripping ratio.

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3.2.5 Instantaneous Stripping Ratio ABC 123

3.2.5 Instantaneous Stripping Ratio ABC 123

Mar 02, 2010· The ISR for these three strips is calculated as ISR S 1 = 45 40 = 1.125 ISR S 1 = 50 40 = 1.250 ISR S 1 = 55 40 = 1.375. This simplified example has illustrated how the length of waste and ore sections will impact the ISR. In a mine, there will be differences in the density of the ore and waste materials.

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Stripping ratio WikipediaWikipedia · Text under CCBYSA license

Stripping ratio Wikipedia

OverviewEquationsUseSee also

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight. Whereas in metal mining, stripping ratio is unitless and is expressed as weight/weight. A stripping ratio can be expressed as a ratio or as a number.

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Overburden management in open pits options and limits in

Overburden management in open pits options and limits in

Mar 01, 2019· Overburden handling has important impacts on surface mining projects and has to be carefully planned considering both mining activities and site rehabilitation , .Overburden handling activities start at the beginning of the mining project, when a huge amount of material from initial underground development or stripping is removed for site preparation , .

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Opencast Working And Stripping Ratio » MiningPathsala

Opencast Working And Stripping Ratio » MiningPathsala

Jun 30, 2021· This is the formula of stripping ratio Stripping Ratio BREAK EVEN STRIPPING RATIO Or, QUARRIABLE LIMIT The ratio of mineral bed thickness to the Overburden thickness for Mining of coal is as follows Mechanized Quarrying with shovel dumper 14 to 5; with dragline 18 to 10; bucket wheel excavator 13 to 4 And with

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Stripping ratio mining Britannica

Stripping ratio mining Britannica

Other articles where Stripping ratio is discussed coal mining Choosing a mining methodcalculated 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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Breakeven stripping ratio Britannica

Breakeven stripping ratio Britannica

mining. The breakeven stripping ratio is a function of ore value and the costs involved. 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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What Is a Stripping Ratio? (with picture)

What Is a Stripping Ratio? (with picture)

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 waste material that must be moved in order to reach a certain ratio of ore.

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Calculation of Boundary Stripping Ratio Errors at the

Calculation of Boundary Stripping Ratio Errors at the

Calculation of Boundary Stripping Ratio Errors at the Stage of Quarries Designing. Selyukov, Alexei. ; Rybár, Radim. Abstract. The open pit mining method of solid minerals extracting is widely used both in Russia and in the whole world, and sets a general direction of mining industry development as

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Break Even Stripping Ratio Example For Coal Mining

Break Even Stripping Ratio Example For Coal Mining

coal mining stripping ratio Gold Mining Equipment,Gold coal mines to guide mining project evaluation to find the ATC in open pit coal mines. High stripping ratio,

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(PPT) Calculating Stripping Ratios for Area Strip MinesEstimated Reading Time 4 mins

(PPT) Calculating Stripping Ratios for Area Strip Mines

The Coal Area Strip Mine Formula Strip Ratio = OB Thickness (in ft) * 11.11/ Coal thickness in inches Assumes coal is 80 lbs/ft^3 (good for bituminous) Area Strip Mine Geometry Geologic Stripping Ratio no accounting for rehandle or less than 100% coal recovery Your Turn Use What You Have Learned About Calculating Stripping Ratios for Strip Mines and Break Even Limits to Determine the Size of a Coal Reserve

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 Stripping Ratios, Pit Limits Cutoff GradeEstimated Reading Time 21 mins

Stripping Ratios, Pit Limits Cutoff Grade

The amount of ore uncovered is A4 A4 = 100 * 25 100 * 25 = 5, ft2 2A3 = 125 * 125 100 * 100 = 5,625 ft2 The instantaneous stripping ratio is 5,625 SR (instantaneous) = = 1.125 5, The overall stripping ratio with bench 7 removed is 15,625 SR (overall) = = 0.48 32,500 Bench 8 With mining of bench 8, another 5, ft2 of ore (A6) is removed.

Estimated Reading Time 21 minsChat
Mine Engineer Apps on Google Play

Mine Engineer Apps on Google Play

The Mine Engineer application is an easytouse mine application, offering tools for the calculation of loading / hauling tools, mine road calculations, production targets, Cut of grade, Bers, Avability units, Ore / Coal Stripping Ratios, HM Unit records, Retase Units, Usage Solar and Mining Book Reading. Mining Engineer application makes users

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Economic Surface Mining of Multiple Seams

Economic Surface Mining of Multiple Seams

Mulliplescam mining is a very important phase of the stripping industry in the United States today. As in the casc of conventional stripping, multipleseam slripmiuing is classified either as area or contour mining .. Area stripmining is practiced on relatively flat terrain. A 'box cut' is made

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 Surface Mine Design

Surface Mine Design

AVERAGE STRIP RATIO Total waste divided by total ore within the ultimate pit. CUTOFF STRIPPING RATIO Costs of mining a ton of ore and associated waste equals to net revenue from the ton of ore.

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Determining Stripping Ratio Basic Mining Techniques5/5

Determining Stripping Ratio Basic Mining Techniques

Apr 04, 2016· Determine the Stripping Ratio of the ore section (green zone) shown below We know; SR = Waste/Ore, therefore; SR = 2500/5 = 12 (i.e. 0.5) (i.e. one unit of waste is removed to recover 2 units of ore)

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TVBIP Ratio Explained The Economics of Oil Sands Mining

TVBIP Ratio Explained The Economics of Oil Sands Mining

Apr 30, 2016· 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. A better measure of mining economics is the TVBIP ratio.

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Financial reporting in the mining industry International

Financial reporting in the mining industry International

.pwc \mining Financial reporting in the mining industry International Financial Reporting Standards 6th edition

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Cutoff grade estimation QueensMineDesignWiki

Cutoff grade estimation QueensMineDesignWiki

CutOff grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be above this grade is considered to be ore, while material below this grade is considered to be waste. Although in a variety of units can be used, the cutoff grade is usually expressed as

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Cutoff grade estimation QueensMineDesignWiki

Cutoff grade estimation QueensMineDesignWiki

CutOff grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be above this grade is considered to be ore, while material below this grade is considered to be waste. Although in a variety of units can be used, the cutoff grade is usually expressed as

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mining engineering STRIPPING RATIO (S)Estimated Reading Time 2 mins

mining engineering STRIPPING RATIO (S)

Jun 06, 2010· a. SR measures the amount of waste that needs to be removed to get an amount of ore, just as we mine it. Note the amount! b. This will differ depending on time span under consideration. * Initial studies (feasibility) overall stripping ratio. * Current month incremental stripping ratio.

Estimated Reading Time 2 minsChat
Mine Engineer Apps on Google Play

Mine Engineer Apps on Google Play

The Mine Engineer application is an easytouse mine application, offering tools for the calculation of loading / hauling tools, mine road calculations, production targets, Cut of grade, Bers, Avability units, Ore / Coal Stripping Ratios, HM Unit records, Retase Units, Usage Solar and Mining Book Reading. Mining Engineer application makes users

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Basic Mining Techniques

Basic Mining Techniques

Basic Mining Techniques

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How is stripping ratio calculated? AnswersToAll

How is stripping ratio calculated? AnswersToAll

Jan 30, 2021· In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. Whereas in metal mining, stripping ratio is unitless and is expressed as weight/weight. A stripping ratio can be expressed as a ratio or as a number.

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FASB Emerging Issues Task Force

FASB Emerging Issues Task Force

company generally is mining a ratio of waste material to mineral deposits that is different from the stripping ratio. Refer to Exhibit 046A for an illustration of a cross section of a mine and calculation of a deferred stripping ratio. For each period, the actual stripping ratio is compared to the lifeofmine stripping ratio.

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Surface Mine Reserves

Surface Mine Reserves

The program will first determine the lowest Instantaneous stripping ratio in the calculation area. The program will then determine in which direction the stripping ratio increases the least. If mining were to start in the area of lowest stripping ratio and then move one grid node in the direction of least increasing stripping ratio, the

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Coal Ratio an overview ScienceDirect Topics

Coal Ratio an overview ScienceDirect Topics

Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour mining equipment includes a drill, loader, bulldozers, and trucks. The steps in contour mining begin with drilling and blasting a triangle shaped portion of overburden (in cross section) above the coal to be mined.

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Stripping Ratios What are They and Why are TheyEstimated Reading Time 4 mins

Stripping Ratios What are They and Why are They

Oct 30, 2018· Calculating stripping ratios. At their most basic, strip ratios can be calculated by dividing overburden thickness by ore thickness. For example, an overburden thickness of 100 meters and an ore

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stripping ratio calculation in mining

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