coal mining stripping ratio

Stripping Ratios: What are They and Why are They Important

Stripping ratios aren’t often discussed, but they can be an early and important indicator for mining projects. Here’s what investors should know about them. A strip ratio, or stripping ratio

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Stripping ratio Wikipedia

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. 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.

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What Is a Stripping Ratio? (with picture)

26/10/2019· 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. In relation to its application in the mining of ore, the utility of the stripping ratio is the determination of the approximate ratio of

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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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strip ratio in 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 to

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How to calculate stripping ratio?

The 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

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Whats the average stripping ratio of open pit mines around

Even if there was an average of ALL open pit mines that would not offer any knowledge regarding open pit mining. The stripping ratio in a mine is chosen based on economics.

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Lecture 4 Calculating Stripping Ratios for Area Strip

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 SMEs Surface Mining were specifically referenced Stripping Ratio as a Fundamental

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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 to

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In coal mining what is a good strip ratio Answers

29/07/2010· Strip Mining can easily destory their natural habitat and even form cave in under the soil ---- Strip mining removes the habitat from many types of animals. During it's operation, a strip mine is

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India Coal: Stripping Ratio

India’s Coal: Stripping Ratio data was reported at 2.330 % in Mar 2015. This records an increase from the previous number of 2.230 % for Mar 2014.

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coal mining stripping ratio BM Garden

Strip Ratio In Coal Mining pol-recreatienl. Strip Ratio In Coal Mining What Is a Stripping Ratio with picture wiseGEEK Apr 22 2018 Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit mining process Read more what is stripping ratio coal mining vibrating sieve separator [7/27 Online]

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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. 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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Can Indonesia's coal mines maximise strip ratios and boost

16/12/2016· Can Indonesia's coal mines maximise strip ratios and boost reserves? Report summary . The declining trend in strip ratios for Indonesia's coal mines have allowed producers to survive in periods of lower coal prices through reduction in production costs and margins. However, producers are likely to have sterilised coal and jeopardised future coal reserves with continuous mining in lower strip

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Surface Coal Mining Methods in Australia InTech

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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(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

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Coal mining Wikipedia

The limitations of contour strip mining are both economic and technical. When the operation reaches a predetermined stripping ratio (tons of overburden/tons of coal), it is not profitable to continue. Depending on the equipment available, it may not be technically feasible to exceed a certain height of highwall. At this point, it is possible to

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Clermont Clermont Glencore Australia

The low Run of Mine strip ratio (3.2:1) and minimal processing (90% coal does not require washing) combined with the high quality coal, means the mine has a first quartile margin position in the seaborne thermal coal market.

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What is stripping ratio in mining? Quora

25/07/2018· 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 wil...

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Clermont Clermont Glencore Australia

The low Run of Mine strip ratio (3.2:1) and minimal processing (90% coal does not require washing) combined with the high quality coal, means the mine has a first quartile margin position in the seaborne thermal coal market.

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CHAPTER 11 Mining Technology Princeton University

basin which produces Federal coal. Area strip mining proceeds by first making a box cut into the earth to uncover the initial strip of coal that is to be mined. The strip of coal uncovered will vary from 100 to 200 ft in width and from one-quarter to several miles in length. The actual size of the cut will be de-termined by the thickness of

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The economics of extended pre-strip stripping

2013 Coal Operators’ Conference The University of Wollongong 14 –15 February 2013 355 THE ECONOMICS OF EXTENDED PRE-STRIP STRIPPING Retief Nel1and Mehmet S Kizil ABSTRACT: Waste stripping involves the most costly processes for any given open cut coal mining operation, As such, it is fundamentally important to optimise material scheduling and the sequences

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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 stripping ratio coal mining

coal mining stripping ratio connexionscarhire . a stripping ratio calculation, based on the price of coal per ton, the cost of mining and marketing the coal per ton, and the cost of mining the soil and rock strata per cubic yard, can be used to identify the break-even stripping ratio for surface.

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what is stripping ratio coal mining crusher

Surface mining methods835 Кб. Typical examples of this type of mining are the larger tonnage coal mining operations inmine using an in-pit crusher and conveyor and waste is tipped directly as envisaged in a terrace mining operation).processing plant on surface, at a rate of 1,22mt per month (ore) at a stripping ratio of 3:1.

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LAND DEGRADATION DUE TO MINING AND ITS REMEDIAL

The ratio of overburden excavated to the amount of mineral removed is called the stripping ratio. For example a stripping ratio of 4:1 means that 4 tonnes of waste rock are removed to extract one tonne of ore. Lower the ratio, the more productive the mine. Stripping ratio varies with the area under mining. According to the data generated by

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COAL Trollope Mining Services

HCI KHUSELA PALESA MINE Gauteng. The Palesa Coal Mine, located 37 km North of the town Bronkhorstspruit, is the largest of the two HCI Coal Mines. Operations will ultimately comprise of opencast mining of coal 380 000 T/MTH @ strip ratio of 2.3 M3/T. The opencast mining scope of work includes ongoing rehabilitation. This operation is unique

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Curragh Mine, Queensland Mining Technology Mining News

Curragh is an open-pit coal mine located 14km north-west of the town of Blackwater in the bowel basin of Central Queensland, Australia. The mine is operated by Wesfarmers Curragh, which bought the property from Stanwell in June 2000. The mine covers an area of 12,600ha and has an annual production capacity of 7Mt. In November 2009, Wesfarmers

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Cost Models of Theoretical Mining Operations CostMine

This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day. Rock characteristics for both ore and waste are typical of those of granite or porphyritic material. Operating conditions, wage scales, and unit prices are typical for western U.S. mining operations. All costs listed are in 2012 US$. The key design criteria

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Cost Of Rock Aggregate Crusher In Tamilnadu Kiran Wet Grinding Mill

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