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 overburden…
What Is a Stripping Ratio? (with picture)
May 09, 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 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 …
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.
Stripping ratio | mining | Britannica
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… 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 ratio in coal mining
Dec 04 2019 · Stripping ratio is a term that is derived from the mining industry and is used in reference to the openpit mining process The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process
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. Read More
what is stripping ratio coal mining crusher
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
How to calculate stripping ratio? - ResearchGate
The common strip ratio for coal mining is BCM per ton of coal. Is this coal in situ or run of mine? Any answers?
(PDF) Stripping Ratios, Pit Limits & Cutoff Grade ...
Stripping Ratios, Pit Limits & Cutoff Grade Optimization
Major Mines & Projects | Moatize Mine
The shale to coal ratio in the Chipanga seam is in the order of 60/40. The Chipanga Seam is economically the most important of the coal seams, as it is thicker and laterally more extensive and therefore has the largest reserves.
Whats the average stripping ratio of open pit mines around ...
A high grade orebody can support a high stripping ratio. A low grade ore body cannot support a high stripping ratio. Thus you may have a range of stripping ratios from 1:1 to 1:15 or even more.
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 will require mining three tonnes of waste rock 1.5K views View 3 Upvoters
Strip Mining - an overview | ScienceDirect Topics
Andrew P. Schissler, in Encyclopedia of Energy, 2004. 2.3 Strip Mining. Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the overburden is displaced, called spoil handling.
“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.
Coal India arm to see viability of merger of NTPCs two ...
May 26, 2020 · The coal ministry had recently asked NTPC to prepare separate mining plans for both the blocks, an official said. The stripping ratio of these blocks is also very high, more than 7.5 cubic metre...
Coal mining - Wikipedia
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.
stripping ratio coal mining comp
what is stripping ratio coal mining crusher. 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.