strip ratio in coal mining

Determining Stripping Ratio

2016-4-4 · The 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.

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Mining Terms

2008-11-12 · Strip Mining: Bedded deposits –coal, phosphates . Quarry Mining: aggregates, marble, granite . ... Stripping Ratio: is the ratio of a unit of waste material removed per similar unit of ore material removed. Toe: is the base of a bank bench or a slope. Waste Dump: ...

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(PDF) Stripping Ratios, Pit Limits & Cutoff Grade ...

Stripping Ratios, Pit Limits & Cutoff Grade Optimization. Download. Related Papers. Optimum cut-off grade policy for open pit mining operations through net present value algorithm considering metal price and cost escalation. By Raul Cezar.

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what is stripping ratio coal mining ppt

Topic 5: Mining Methods-Part I-Surface mining. 2/11/2011 Strip-mining: Blast, scoop off rock overburden, and then scoop out ore material. Fairly shallow. Economics of strip mining depend on stripping ratio Large land area can be involved, especially for coal and bauxite. Strip mining. Example: Alcoa''s Sierra de 39.

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What Is a Stripping Ratio? (with picture)

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

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Coal mining methodsCoal mining methods

2013-10-8 · Coal mining methodsCoal mining methods ()-- Green Coal Technology (GCT)Green Coal Technology (GCT) - Safety first! Kikuo MATSUI, Dr. Eng., ProfessorProfessorDepartment of Earth Resources and Mining EngineeringDepartment of Earth …

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(PDF) Surface Coal Mining Methods in Australia

Overall mining sequence of a typical surface coal mine in Australia (after Westcott et. al., 2009). 2.1 Dragline method. Dragline is the predominant mach ine which is used to …

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COALSPUR MINES LTD

2011-3-8 · Vista Coal Project is amenable to low cost Dragline and Truck/Shovel mining as seen in the nearby Prairie mines of Alberta''s mine mouth power generating region Average 7 degree dipping coal seams that subcrop near surface, allowing for low strip ratio surface mining

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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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CHAPTER 11 Mining Technology

2007-3-19 · 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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Whats the average stripping ratio of open pit mines …

2016-8-31 · 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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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 …

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Sebuku Mine | Sakari Resources Limited

The underlying features that make Sebuku mine such a jewel for Sakari also include its very low strip ratio, averaging about 5:1, short haul and barging distances to reach the at-sea load out point. These give Sebuku one of the lowest cash costs of mining in the …

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2012 Americas School of Mines

2015-6-3 · 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 Surface Mining

Surface Mining is a form of mining for ore material on the surface layer of the Earth''s crust. This method is famous with coal mining. I will be sharing the general steps that are present in this method. 1.Removing the trees and vegetation present in the area. …

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Coal

Strip Ratios: Calculate (cumulative) volume or tonnage strip ratio for every coal block. Strip ratio can be reported or contoured. Convert Seam Block Model to Wireframe: Output surfaces (roof and/or floor) and solids (seams). Conveniently display a smoothed representation of the Seam Block Model. Model Coal Quality Attributes

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Strip Mining: A Destructive Way of Coal Extraction ...

2017-3-12 · Surface or strip mining damages and pollutes ecosystems to a great degree. This is because by definition the process of strip mining involves striping away trees, plants and topsoil so that the coal can be accessed underneath. This means that …

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Stripping Ratios: What are They and Why are They …

2018-10-30 · 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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Surface Coal Mining Methods in Australia

2018-9-25 · 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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In coal mining what is a good strip ratio?

2010-7-29 · Coal mining is good because it is used to get a very important natural resource, coal. Coal is used in many things and without coal mining we could not do those things.

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For personal use only

2016-12-13 · Coking coal adjacent tenures – improved coking properties and coking fraction compared to existing Isaac Plains operation Low strip ratio coal starting <6:1, average over first 4 years sub 10:1 (lower than Isaac Plains) Environmental Authority amendment and Mining Lease Applications submitted in October 2016 Key approval stage gates in next 6 ...

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strip ratio in coal mining

The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process.get price (PDF) Stripping Ratios, Pit Limits & Cutoff Grade In strip coal mining operations, the following are sometimes seen: The original pit on this section (Fig. 4.127), consists of 6 benches and has a depth ...

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(PDF) Surface Coal Mining Methods in Australia

Overall mining sequence of a typical surface coal mine in Australia (after Westcott et. al., 2009). 2.1 Dragline method. Dragline is the predominant mach ine which is used to remove the overburden ...

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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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Break-even stripping ratio | Britannica

2021-10-23 · 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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Mine Plan

Strip ratios for minable coal reserves range from 1:1 to over 35:1. A decrease in the strip ratio will decrease the cost of producing the coal. Underground mining methods are employed when the amount of overburden that would have to be removed by surface mining methods is cost prohibitive (i.e., the strip ratio is beyond an economic limit).

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Blasting Principles

Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to reduce damage and backbreak to the rock left behind.

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The Coal Mine

2013-11-13 · The Coal Mine. The Ncondezi coal mine will be an open pit, low strip ratio, contractor mining operation producing 1.5 million tonnes of coal over a 25 year life of mine to supply to the adjacent power plant via a 2km conveyor. Following approval of the Mine Definitive Feasibilty Study and the Environmental and Social Impact Assessment, Ncondezi ...

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(PDF) Mining Methods: Part I-Surface mining

2021-10-11 · ratio Large land area ... coal or tar sand. Strip mining is only practic al when the ore body to be excava ted is . relatively near the surface. Thi s type of mining uses some of the largest ...

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