coal mining stripping ratio

2 天前In coal mining: Choosing a mining methodcalculated 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

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

For example a stripping ratio of 4:1 means that 4 tonnes of waste rock producing waste rock at a stripping ratio of 1:1418 The coal mines of Coal India LimitedRead more Indonesian coal producers cut costs to sustain profits as prices fall

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 Stripping Ratios for Strip Mines and Break Even Limits to Determine the Size of a

Calculating stripping ratios At their most basic, strip ratios can be calculated by dividing overburden thickness by ore thickness For example, an overburden thickness of

= 029 = 03 is the maximum allowable stripping ratio for break even This mean the income generated by one unit of 06% graded copper is able to offset the cost of 3 units waste at no profit (Income = Cost) Feel free to comment so that i can improve on the materials on this blog Follow, like and share if you find this information useful

With increasing overburden to coal ratio, the cost of removal of overburden (known as stripping cost) adds considerably to the cost of mining the coal beyond economic limit To develop a mine, the break even stripping ratio (at the surface of the final pit) must be established

V V Rzhevskii, Mining Operations in OpenCut Coal and Ore Mines [in Russian], Ugletekhizdat, Moscow (1957) Google Scholar 6 V V Rzhevskii, Technology and Integrated Mechanization of OpenCut Coal Mining [in Russian], Nedra, Moscow (1968) Google Scholar 7

For open pit mining the costs are $040/ton ore and a stripping cost of $050/ton of waste SR = (300 –040)/050 = 52 tons of waste/ ton of ore ie while the stripping ratio is less than 52 it is most economical to mine the deposit by open pit

Stripping RatioStripping Ratio = Volume of Material (Volume of Material (bcmbcm)/)/ Extraction of Coal (ROMExtraction of Coal (ROMtontonton ))*) 4 Strip Mining

May 09, 2020· 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

* Thus in coal SR is the number of BCM of waste that needs to be removed to uncover 1 t of coal Stripping ratio allows definition of this “breakeven” point Switch to underground mining if your stripping ratio is more than BESR a May or may not be

A Stripping ratio | mining | BritannicaOther 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

With increasing overburden to coal ratio, the cost of removal of overburden (known as stripping cost) adds considerably to the cost of mining the coal beyond economic limit To develop a mine, the break even stripping ratio (at the surface of the final pit) must be established It is found from the formula:

Books such as Elements of Practical Coal Mining and SMEs Surface Mining were specifically referenced Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the cost of Overburden Removal Stripping Ratio determines relative amounts of each to be moved If coal generates a $5/ton

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

Standard stripping ratio the ratio of “overbudern (OB) to be removed” to “the mineral to be produced” during the whole project life Suppose in an opencast mine, 20 lakh CuM OB will be removed during the life time (suppose 15 years) against the production of 10 lakh Te of coal, the standard stripping ratio

Stripping RatioStripping Ratio = Volume of Material (Volume of Material (bcmbcm)/)/ Extraction of Coal (ROMExtraction of Coal (ROMtontonton ))*) 4 Strip Mining

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

This methods are successively used till the stripping ratio is acceptable and is economical Open Pit Mining Open Pit Mining (Courtesy :Open Cast Mining Advantages (911metallurgist)) In this method of surface mining, they make several layers of cuts and form benches of strata and coal

May 09, 2020· 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

A Stripping ratio | mining | BritannicaOther 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

Books such as Elements of Practical Coal Mining and SMEs Surface Mining were specifically referenced Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the cost of Overburden Removal Stripping Ratio determines relative amounts of each to be moved If coal generates a $5/ton

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 Inquire Now; Accounting for waste removal costs EY IFRS Developments for Mining

V V Rzhevskii, Mining Operations in OpenCut Coal and Ore Mines [in Russian], Ugletekhizdat, Moscow (1957) Google Scholar 6 V V Rzhevskii, Technology and Integrated Mechanization of OpenCut Coal Mining [in Russian], Nedra, Moscow (1968) Google Scholar 7

Stripping RatioStripping Ratio = Volume of Material (Volume of Material (bcmbcm)/)/ Extraction of Coal (ROMExtraction of Coal (ROMtontonton ))*) 4 Strip Mining

The second metric is applicable to shallower deposits that are being evaluated for surface rather than underground mining, and it is known as the stripping ratio Let’s start with stripping ratios, and let’s use a shallow coal seam for our example Stripping Ratios The coal

The process is repeated in successive parallel cuts until the stripping ratio indicates that continued surface mining is uneconomical Openpit mining In openpit mining of the coal seam, several benches are established in both the overburden strata and the coal seam

16 Stripping ratio of the Springfield Coal, Shawneetown Quadrangle 24 17 Thickness of bedrock overburden, Springfield Coal, Shawneetown Quadrangle 25 18 Ratio of bedrock to unconsolidated overburden, Springfield Coal, Shawneetown Quadrangle 26 19 Availability of the Springfield Coal for underground mining, Shawneetown Quadrangle 27

employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation Once the economic feasibility has been verified, the most appropriate mining methods must be selected according to the natural/geological conditions and spatial/geometric characteristics of mineral deposits