coal mining stripping ratio

coal mining stripping ratio

Stripping Ratios: What are They and Why are They Important ...

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

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Stripping ratio mining Britannica

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. 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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Stripping ratio - Wikipedia

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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What Is a Stripping Ratio? (with picture)

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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(PPT) Calculating Stripping Ratios for Area Strip Mines ...

Calculating 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 SME’s “Surface Mining” were specifically referenced fStripping Ratio as a ...

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12_Stripping Ratios Pit Limits - Introduction to Mining ...

Dec 02, 2014  In strip coal mining operations, the following are sometimes seen: (ft) Thickness Coal (ft) Thickness Overbuden SR = (tons) Coal) (yd Overburden SR 3 = 3 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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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

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what is stripping ratio coal mining

what is stripping ratio coal mining, mining strip ratio sharesguru. Quarry Equipment. Rock Crusher.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 when it is mined with draglines or. Read more

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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

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what is stripping ratio coal mining

SURFACE MINING METHODS. 2-3. 2.2 Strip Mining. Strip mining is ideally applied where the surface of the ground and the ... Typical examples of this type of mining are the larger tonnage coal mining ..... 5.2 Discuss the concept of stripping ratio and how haul road gradient...

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12_Stripping Ratios Pit Limits - Introduction to Mining ...

In strip coal mining operations, the following are sometimes seen: (ft) Thickness Coal (ft) Thickness Overbuden SR = (tons) Coal) (yd Overburden SR 3 = 3 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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Lecture 4 Calculating Stripping Ratios For Area Strip ...

Books such as Elements of Practical Coal Mining and SMEs Surface Mining were specifically referenced Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the cost of Overburden Removal Stripping Ratio determines relative amounts of each to be moved. If coal generates a $5/ton ...

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3.2.4: Step 2 -- How Much of the Resource is a Reserve ...

The second metric is applicable to shallower deposits that are being evaluated for surface rather than underground mining, and it is known as the stripping ratio. Let’s start with stripping ratios, and let’s use a shallow coal seam for our example. Stripping Ratios. The coal seam will be underneath layers of

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Ministry of Coal, GOI

Standard stripping ratio - the ratio of “overbudern (OB) to be removed” to “the mineral to be produced” during the whole project life. Suppose in an opencast mine, 20 lakh CuM OB will be removed during the life time (suppose 15 years) against the production of 10 lakh Te of coal, the standard stripping ratio

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Surface Coal Mining Methods in Australia

Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and

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Overburden - an overview ScienceDirect Topics

Coal seams and associated overburden can outcrop on the edges of hills and mountains. Figure 3 shows a cross-section of a typical contour mine plan. 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.

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Strip Mining Process

Surface mining Wikipedia "Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as "overburden removal"It is most commonly used to mine coal and lignite (brown coal)Strip mining is only practical when the ore body to be excavated is relatively near the surface

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A new method to confirm the economic and reasonable ...

【Abstract】 Economic rationality is currently open pit stripping ratio is well calculated by comparing the cost of industrial exploitation, the calculation does not take into account the safety of mining work well accidents, such as surface subsidence caused by enormous economic losses, but also did not consider the open-pit mining on the ecology of environmental damage and environmental ...

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Coal mining - Choosing a mining method Britannica

Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many

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What is Strip Mining? Methods and Impact Environment Buddy

Jan 17, 2021  The Strip Mining Method. All surface or strip mining initially eradicates the vegetation, rock sediment, and soil spread over the surface to uncover and remove coal from an underground mineral seam or coal deposit. I should also mention, phosphate mining operations are very similar to coal mining operations.

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waste stripping mining

Stripping Ratio In Coal Mining . Stripping Ratio In Coal Mining; what is stripping ratio coal mining ppt Grinding Mill . 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 . Get Price

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what is stripping ratio coal mining

what is stripping ratio coal mining, mining strip ratio sharesguru. Quarry Equipment. Rock Crusher.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 when it is mined with draglines or. Read more

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3.2.4: Step 2 -- How Much of the Resource is a Reserve ...

The second metric is applicable to shallower deposits that are being evaluated for surface rather than underground mining, and it is known as the stripping ratio. Let’s start with stripping ratios, and let’s use a shallow coal seam for our example. Stripping Ratios. The coal seam will be underneath layers of

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stripping ratio.pdf - After going through this lecture you ...

Overall stripping ratio (OSR) In case of coal deposits, In case of other deposits, OSR will provide information regarding overall economic viability of the mine, additionally it helps in waste dump planning. Incremental stripping ratio (InSR) InSR is the change in the stripping ratio from year to year, i.e., yearly change in the ISR.

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Stripping Ratio Question : mining

It can be a little different in open cut coal mining - strip mining, in particular. They use a ratio of cubic metres (yards or feet) to a tonne of coal. Strip mining is a volume (of waste) management problem hence the focus in the stripping ratio. level 1. 2 points 13 days ago.

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Costs of coal surface mining and reclamation in Appalachia ...

Coal surface mining and reclamation costs in Appalachia are estimated as a function of reclamation quality, the angle of natural terrain, and the overburden-to-coal stripping ratio. When mining to a maximum stripping ratio of 20, the cost of providing minimally acceptable, or basic, reclamation is estimated to be $0.49, $0.95, and $1.50/ton of ...

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Analysis of Highwall Mining Stability - The Effect of ...

feet to 1,200-feet of additional recovery when the economic stripping ratio is reached in contour mining or in slot mining when surface ... technology, surface coal mining technique requiring four to five miners per shift. Volkwein, et al. (1) review the evolution of auger and

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Availability of Coal Resources for Mining in Illinois

16 Stripping ratio of the Springfield Coal, Shawneetown Quadrangle 24 17 Thickness of bedrock overburden, Springfield Coal, Shawneetown Quadrangle 25 18 Ratio of bedrock to unconsolidated overburden, Springfield Coal, Shawneetown Quadrangle 26 19 Availability of the Springfield Coal for underground mining, Shawneetown Quadrangle 27

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pwc 2012 Americas School of Mines

Notes: Strip Ratio Mining Methods 27 Mistakes are often made when computing the strip ratio. It’s all in the words and you have to watch the flow of material and how it is classified. For example, according to Freeport McMoran’s 2007 10K filing, the concentrator is capable of processing 75,000 metric tons per day of primary sulfide ore and

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coal ton to bcm « BINQ Mining

Jun 07, 2013  Stripping Ratio(s) – Surface Mining COAL MINING AND GEOLOGY 24 Nov 2012 Coal miners measure waste in BCM, or bcy, and coal in tonnes or tons.Thus in coal SR is the number of BCM of waste that needs to be »More detailed

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Economic Surface Mining of Multiple Seams

case of strip mining. With regard to the western coals, the outlook for the mUltiple-sewn strip-mining industry seems as favorable as Iltat predicted for the entire industry. A TYPICAL MULTIPLE-SEAM SURFACE COAL MINE Using a walking dragline and an electric sboveJ in tandem, Peabody Coal Company. at its Homeslead Mioe in Ohio

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What is Strip Mining? Methods and Impact Environment Buddy

Jan 17, 2021  The Strip Mining Method. All surface or strip mining initially eradicates the vegetation, rock sediment, and soil spread over the surface to uncover and remove coal from an underground mineral seam or coal deposit. I should also mention, phosphate mining operations are very similar to coal mining operations.

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“Giant Shovel on I-70”Ohio Strip Mine Fight: 1973 The ...

May 31, 2017  Generally it is economic to strip mine when there is a 20:1 ratio of overburden-to-coal seam, meaning, for example that a three-foot coal seam can be surface mined economically when the overburden is up to 60 feet. However, at some surface mines in Ohio, highwalls of up to 200 feet high remain where five-foot-coal seams have been extracted.

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in coal mining what is a good strip ratio

good strip ratio for a coal mine inlineskateschool. Coal mining strip mining educational video YouTube. Aug 08 2020 Esther Ejim Last Modified Date August 08 2020 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 ...

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stripping overburden limestone mining

Stripping ratio - Wikipedia. 7/3/2009 From Wikipedia, the free encyclopedia In 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.

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