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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 coal recovery .The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 11.
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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 >>Read; formular for calculating strip ratio in mining.
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Pertambangan Permukaan - Stripping Ratio (s) Jenis dan definisi; Apa ukuran SR? Apa yang harus di gunakan untuk SR? Pada TerminologyTerminology : Definition Coal …
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Sep 27, 2018· Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit 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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This process continues along parallel strips of land so long as the ratio between the overburden and the coal seam, called the stripping ratio, makes it economically feasible to recover coal. Mining may cease in a particular area, for example, where the coal seam becomes thinner or where the seam dips further below the surface.
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Coal mining - Wikipedia, the free encyclopedia . The goal of coal mining is to obtain coal from the ground.Coal is valued for its energy content, and, since the 1880s, has been widely used to …
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Stripping ratio – The unit amount of overburden that must be removed to gain access to a similar unit amount of coal or mineral material. Stump - Any small pillar. Subbituminous – Coal of a rank intermediate between lignite and bituminous.
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influence of striping ratio on open cast coal mining. 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 .
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A high grade orebody can support a high stripping ratio. A low grade ore body cannot support a high stripping ratio. The cost is purely driven by the cost of the mining fleet (capital and ...
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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 …
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mining strip ratio sharesguru australian shares forum, the strip ratio is the number of cubic metres of dirt and rock you need to remove to obtain a every tonne of ore (usually coal …
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12 Stripping ratio of the Herrin Coal, Shawneetown Quadrangle 18 13 Availability of the Herrin Coal for surface mining, Shawneetown Quadrangle 20 14 Thickness of the Springfield Coal…
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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 overburden, that must be moved in ...
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Coal Mining Equipment For Coal Crushing,Coal Mining Equipment,Coal Mining Equipment,Coal Mining Equipment from -Jiangxi Jinshibao Mining Machinery Manufacturing Co., ... (a). Compute the CM ratio and break-even point if the new machine is installed.
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coal mining stripping ratio, stripping ratio encyclopedia. moolarben coal mine yancoal. the low life of mine strip ratio of 3.3 and modern 13.5mtpa capacity … What is the Difference between Strip mining …
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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 …
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ABSTRACT: The economic stripping ratio t useo definde an economic mining bloc ikn an open pit coal mining situatio isn rationalised by considering the time valu oe f money, and definin rugn o minf e recovery and mining a coss dynamit c variables
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stripping and extraction and the effect of variations s in run-of-mine recovery and mining cost per to ton change dues in the number, thicknesses and depth of seams s withi an mining block. Appropriately, the determinatio onf an economic stripping ratio for a coal reserve …
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stripping ratio in coal mining for example, higher ... strip ratio in coal mining Calculating Stripping ...The break-even stripping ratio is a function of ore value and the costs ... Chat Now; What are the Alternative Energy Sources Available? - ...
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After coal comes out of the ground, it typically goes on a conveyor belt to a preparation plant that is located at the mining site. The plant cleans and processes coal to remove dirt, rock, ash, sulfur, increasing the heating value of the coal.
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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 ...
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surface strip coal mining, either from a production, project or planning perspective. A ... 1.3 PRODUCTION COST AND STRIPPING RATIO ANALYSIS 8 1.3.1 Stripping Ratio for Multiple Seams 11 1.4 BASIC PROFIT FUNCTION ANALYSIS 13 2 …
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break even stripping ratio example for coal mining. stripping ratio in coal mining , The break-even stripping ratio is a , stripping ratio varies with the quality of the coal…
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In 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 - 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 ...
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The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. Stripping ratio coal mining comp – Customized services … Stripping ratio coal mining comp. ...
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In strip coal mining operations, the following are sometimes seen: Overbuden Thickness (ft) Overburden (yd 3 ) SR = SR = Coal Thickness (ft) Coal (tons) Stripping Ratios Instantaneous stripping ratio: The stripping ratio for a given push back Overall stripping ratio: The stripping ratio for the total amount of material removed.
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This stripping ratio is higher than the 20:1 limit, so surface mining of the coal seam to this depth would not be economic. Clearly, at greater depths, proportionately more overburden has to be removed per volume of coal, and this steadily increases the stripping ratio.
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The typical method of assessing surface mining economics for a coal seam is a calculation of overburden (native rock and soil above a coal seam) moved per clean ton of coal produced, commonly referred to as “mining ratio”. The higher the mining ratio (or more overburden moved per clean coal ton), the higher the cost of producing coal.
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Coal mining is the process of extracting coal from the ground. Coal is valued for ... mountaintop removal or strip) mining methods. Open cast coal mining recovers a greater proportion of the coal deposit than underground methods, as more of the coal seams ... When the operation reaches a predetermined stripping ratio (tons of …
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The clean coal stripping ratio is more indicative of a mine’s performance as it includes the expected performance of the mine’s processing plant. Current Western Canadian open-pit coking coal mines typically operate with clean coal stripping ratios of …
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Surface Coal Mining Methods in Australia 7 Fig. 4. Dragline Working Section (Gianazza, 2010). Fig. 5. Box cut, strip cuts and spoil piles (Humphrey, 1984). mining access are either taken through the over burden dump as a valley, dozed through the spoil pile parallel to the strip, created in the highwall either parallel or at right angles to the
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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 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock.
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effect of stripping ratio in coal mining KAMY is the worldwide leader in manufacturing hydraulic cutters, road headers, tunnel support systems, and other specialized machinery used in the tunneling, mining, and construction industries.
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* Consider Capital Quarries , Rolla, at 25 m depth, SR = 0.5 b. To surface mine we need to remove some waste in addition to ore / coal c. SR measures how much waste needs to be removed so that a ...
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1.4 Stripping Ratio Stripping ratio is defined as the ratio of the Overburden/Cover Rock / Waste Rock to the ore body. The various stripping ratios that are used in surface mining are the following: 1.
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average life-of-mine stripping ratio approach, while others expense such costs as incurred, or follow the ... the asset based on an average stripping ratio. The interpretation specifies the costs that may be ... for example coal.
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