What Is Stripping Ratio Coal Mining


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


What Is a Stripping Ratio? (with picture) - wisegeek

May 21, 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


Stripping ratio | mining | Britannica

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 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… Read More


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

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


what is stripping ratio coal mining - Mine Equipments

what is stripping ratio 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) required to be handled in order to extract some volume of


Coal Mining Stripping Ratio - mbibelandanl

what is stripping ratio coal mining - karnatakacpu A Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the


What Is Stripping Ratio Coal Mining - bikerpointeu

what is stripping ratio coal mining ppt - Cutting Head 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 order to extract a given amount of ore


What is stripping ratio in mining? - Quora

Jul 25, 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


In coal mining what is a good strip ratio - answers

In coal mining what is a good strip ratio? 1 Overburden O/B 2 Coal / ore 3 Interburden (or parting), I/B Waste (O/B + I/B) needs to be removed to get access to coal / ore What Is Stripping


Surface Strip Coal Mining Handbook - saceaorgza

1 introduction to surface strip coal mining 11 fundamental concepts and definitions 2 12 surface coal mining 5 13 production cost and stripping ratio analysis 8 131 stripping ratio for multiple seams 11 14 basic profit function analysis 13 2 geology and exploration 21 geology of south african coal resources 2


In coal mining what is a good strip ratio - answers

In coal mining what is a good strip ratio? 1 Overburden O/B 2 Coal / ore 3 Interburden (or parting), I/B Waste (O/B + I/B) needs to be removed to get access to coal / ore What Is Stripping


What Is Stripping Ratio Coal Mining - bikerpointeu

what is stripping ratio coal mining ppt - Cutting Head 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 order to extract a given amount of ore


What is stripping ratio in mining? - Quora

Jul 25, 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


what is stripping ratio coal mining crusher - educationcare

Stripping ratio 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 More details » Get Price


what is stripping ratio coal mining crusher - educationcare

2-3 22 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 case, ore is transported out of the mine using an in-pit crusher and conveyor and ratio (S'), with reference to the open pit mining method 31 Illus


Coal Mining Stripping Ratio - mbibelandanl

stripping ratio in coal mining - crusherasia coal mining stripping ratio, stripping ratio encyclopedia moolarben coal mine yancoal the low life of mine strip ratio of 33 and modern 135mtpa capacity … What is the Difference between Strip mining and … GET PRICE >>


Stripping Ratio In Coal Mining - mbokodoinnscoza

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


Stripping Ratio Calculation In Mining - cz-eueu

ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block


Lecture 4 Calculating Stripping Ratios for Area Strip

Calculating Stripping Ratios for Area Strip Mines The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 1111/ 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 …


(PDF) Stripping Ratios, Pit Limits & Cutoff Grade

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


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


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 both the over-


IFRS First Impressions - homekpmg

average life-of-mine stripping ratio approach, while others expense such costs as incurred, or follow the US GAAP approach of allocating all production stripping costs to inventory produced in the period For companies that currently expense these costs, the interpretation will mean not only a change in


effect of stripping ratio in coal mining | Solution for

Aug 31, 2012 · effect of stripping ratio in coal mining As a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant We also supply individual crushers and mills as well as spare parts of them


In coal mining what is a good strip ratio - InbumNet

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strip ratio in coal mining - mnque-recruitmentnl

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 Chat Online what is stripping ratio coal mining - …


what is stripping ratio coal mining crusher

what is stripping ratio coal mining, mining strip ratio sharesguru Quarry Equipment Rock Crushermining 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


What Is Open-Pit Mining? (with picture) - wisegeek

May 22, 2019 · The process of open-pit mining is precipitated by the analysis of the area in order to determine the presence of the desired material that may be coal or ore If it is determined that the desired materials are present in the area, the next step would be to calculate the stripping ratio of the mining process, meaning that even though ore, coal or another desired material may be present, the


strip ratio in coal mining - residentialpainterscoza

stripping ratio in 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) required to be handled in order to extract some volume of


ratio in coal mining - elektriciteitswerken-lillebe

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


Effect Of Stripping Ratio In Coal Mining - metsgustabe

Stripping Ratio Calculation In Mining czeu 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 be handled in …


strip ratio in coal mining - etsiviaggiarecislit

what is stripping ratio coal mining, mining strip ratio sharesguru cubic feet or 1275 tons of coal for a ratio of 1875 if the total cost to mine was 300 per cubic yard, the coal sales price per ton would have to be 3750 to break mining strip ratio sharesguru australian shares forum


What is Strip Mining? (with pictures) - wisegeek

Apr 24, 2019 · Strip mining is a type of surface mining which involves the removal of a thin layer of material known as an “overburden” to access buried deposits of useful minerals This type of mining is only effective in areas where mineral deposits are very close to the surface, making it feasible to quickly and easily remove the overburden to get to them


What is the maximum stripping ratio of open pit Diamond

What is the maximum stripping ratio of open pit Diamond mines before considering going underground? I am busy with a design project and I need to benchmark average stripping ratios of …


Coal Mining Stripping Ratio - nnguniclubcoza

In coal mining what is a good strip ratio The Q&A wiki 1 Overburden O/B 2 Coal ore 3 coal mining stripping ratio Zenith Hot-sale Products Glossary of Mining Terms vibrating sieve separator Glossary of Mining Terminology A roof bolts and beams used to support the rock overlying a coal seam in an underground mine A good roof Stripping ratio


(PPT) Calculating Stripping Ratios for Area Strip Mines

The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 1111/ 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


mining engineering: STRIPPING RATIO (S)

Jun 06, 2010 · c SR measures how much waste needs to be removed so that a unit of ore/coal can be mined If you work in a mine, ALWAYS use incremental stripping ratio Use overall stripping ratio only on capital projects SURFACE OR UNDERGROUND ? a Which type of mining is better for your deposit? b If it is surface mining, when do you stop mining?


Images of Mountaintop Removal Mining | Earthjustice

Mountaintop removal coal mining, often described as "strip mining on steroids," is an extremely destructive form of mining that is devastating Appalachia In just a few decades, more than 2,400 miles of streams and headwaters that provide drinking water for millions have been permanently buried and …