How to calculate stripping ratio?
The common strip ratio for coal mining is BCM per ton of coal. Is this coal in situ or run of mine? Any answers? Can you help by adding an answer? Answer. Add your answer. Related Publications.
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The common strip ratio for coal mining is BCM per ton of coal. Is this coal in situ or run of mine? Any answers? Can you help by adding an answer? Answer. Add your answer. Related Publications.
A coal mine is a place where coal is dug out of the earth. Some mines are completely underground and depend on tunnels to take miners to the coal. Other places, known as strip mines, are open pits ...
The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * / 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 coal recovery Your Turn • Use What You Have Learned About Calculating ...
In coal mining: Contour strip mining. If the breakeven 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.
10. Overall stripping ratio for the year 201314 was (Stripping ratio is defined as the ratio of Over Burden Removal to Coal produced in Open Cast mining.) OBR means the quantity of over burden removed during the process of open cast mining. [Table : ] 11.
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.
In coal mining what is a good strip ratio Wiki Answers What Is Stripping Ratio?a. Measures relative deposit depth. Q: How important is depth in surface mining?? * .
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.
The Powder River Basin coal beds are shaped like elongated bowls and as mines expand from east to west in the Powder River Basin, they will be going "down the sides of the bowl". This means that the overburden (rock lying over the coal) will increase as will the stripping ratio (the ratio of rock that needs to be moved to get to a ton of coal).
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 .
underground mining to extract the economic resources from the defined mining areas. Lerchs Grossman pit optimisation tools have been applied to defining the optimum pit limits in open cut coal mines. The sta ndard algorithm utilises a Economic ratios may be calculated on the basis of cash costs, owning and operating
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
Aug 31, 2012· Chapter 2: The Environmental Effects of Strip Mining – The Strip . EFFECTS OF. STRIP MINING A ll mining operations have a disruptive effect on the . so long as the ratio between the overburden and the coal seam, called the stripping ratio, . In coal mining what is a good strip ratio – The QA wiki. 1. Overburden O/B 2. Coal / ore 3.
• Detailed location (coordinates) and farms comprising each coal mine; • Main shareholders of each coal mine; • Status of each coal mine (in production/ greenfield or exploration stage); • Mining method (opencast/underground), average stripping ratio for opencast mines;
Oct 23, 2017· Niladri Bhattacharjee, partner, strategy operations, mining metals at KPMG in India said: "Some of the blocks may be costly due to high stripping ratio and evacuation issues. However, given the current shortage of coal, interest may be there for the blocks.
10. Overall stripping ratio for the year 201314 was (Stripping ratio is defined as the ratio of Over Burden Removal to Coal produced in Open Cast mining.) OBR means the quantity of over burden removed during the process of open cast mining. [Table : ] 11.
A strip ratio, or stripping ratio, is an important measurement related to the openpit mining process. It represents the amount of waste material, also known as overburden, that must be moved in ...
respectively. In respect of underground mines OMS of CIL and SCCL was and respectively. (OMS is the output measured in tones per unit of manshift). [Table : ] 13. In the year 201516, overall stripping ratio was Stripping Ratio is defined as the ratio of OBR to coal produced in open cast 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 .
Strip itself is easily understood in coal mining where you may have 20 metres of overburden before you expose a 2 metre coal seam. In this case, it is a simple to just divide the length of the overburden by the length of the coal seam (20/2 = 10:1 strip ratio) That is coal mining or strip mining at its core.
Nov 13, 2013· The Ncondezi coal mine will be an open pit, low strip ratio, contractor mining operation producing million tonnes of coal over a 25 year life of mine to .
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.
Oct 26, 2019· 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.
CHAPTER 8 Stripping Ratios, Pit Limits Cutoff Grade Optimization Dr. Teuku Andika R Putra USM 2014 Stripping Ratios The stripping ratio (SR) refers to the amount of waste that must be removed for a given quantity of ore in open pit mining.
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