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ratio mining stripping

SR = (3.00 –0.40)/0.50 = 5.2 tons of waste/ ton of ore i.e. while the stripping ratio is less than 5.2 it is most economical to mine the deposit by open pit. When the stripping ratio exceeds 5.2 it will be more economical to mine using the underground mining method block caving.

Stripping Ratios What are They and Why are They Important

Oct 31, 2018· A strip ratio, or stripping ratio, isan 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...

Stripping Ratio Mineral Production Activities

Stripping ratio is defined asthe tonnage of waste rock to be mined, divided by the tonnage of ore to be mined from the pit.Stripping ratio is influenced by the shape of the orebody and may vary considerably during the life of the mine. Except in rare cases, it increases with depth of the orebody below surface. The unit cost of mining may increase over the life of a pit due to increased stripping ratio and the longer …

Determining Stripping Ratio Basic Mining Techniques

BESR = [ (0.006*0.92*1.63*1000) – (6.8)]/7.5. = 0.29 = 0.3is the maximum allowable stripping ratio for break even. This mean the income generated by one unit of 0.6% graded copper is able to offset the cost of 3 units waste at no profit (Income = Cost).

What Is a Stripping Ratio (with picture)

Dec 04, 2020· Stripping ratio isa 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 …

What Is aStripping Ratio (with picture)

Dec 04, 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 …

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

8 Break EvenStrippingRatioBESRMaximumStrippingRatioSR

Break EvenStripping Ratio(BESR)/MaximumStripping Ratio(SR max)/Cut offStripping Ratio: This is defined as thatstripping ratioat which cost ofminingone tonne of ore & corresponding volume of waste material equals the revenue received by sale of one tonne of orebody OR when cost ofminingore & waste matches with revenue generated by sale of ore. • Overall Pit Limit is decided by Break ...

BasicMiningTechniques

BasicMiningTechniques

How to calculate stripping ratio ResearchGate

The stripping ratio (SR) refers to the amount of waste that must be removed for a given quantity of ore in open-pit mining. It is commonly expressed as: SR=Waste (tons) / ore (tons) A wide variety...

influence of striping ratio on open castcoalmining

Stripping ratio - Wikipedia. In mining, stripping ratio or strip ratio refers to the ratio of the volume ofoverburden (or waste ... removal prior to ore extraction, underground miningoperations tend to have lower stripping ratios due to increased selectivity. ...Open-pit mining... Get Quote; Details of …

Strip Mining an overview ScienceDirect Topics

Andrew P. Schissler, in Encyclopedia of Energy, 2004. 2.3Strip Mining.Strip miningis 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 miningis fundamentally different from contour or areaminingon how the overburden is displaced, called spoil handling.

strip ratio mining Auto Gyro Africa

Another factor that is considered when determining the economics ofstrip miningis thestripping ratio, which is theratioof overburden thickness to coal seam thickness. Typically the maximumstripping ratiothat is economical is 20 to 1 (Schobert, 1987). The two general methods ofstrip miningare areaminingand contourmining.

Lecture 4 Calculating Stripping Ratios for Area Strip

Calculating Stripping Ratios for Area StripMines. Mnge 315 Dr. B. C. Paul spring 2003 revised 2010 Note These notes contain information considered common knowledge to those familiar withStrip Mining. Books such as Elements of Practical CoalMiningand SMEs SurfaceMiningwere specifically referenced

Coal Ratio an overview ScienceDirect Topics

Contour surfaceminingtakes advantage of the lowstrip ratiocoal reserves adjacent to the outcrop. Contourminingequipment includes a drill, loader, bulldozers, and trucks. The steps in contourminingbegin with drilling and blasting a triangle shaped portion …

stripping ratio calculation in mining Sians Karaoke

OverallStripping Ratio(OSR) AllowableStripping Ratio(ASR) 5 3 26 5 The next scenario evaluated is the UG option alone The BCOG of the deposit was calculated applying the same equation used in the first scenario however changing the OPminingcosts for UGminingcosts and the result found was a BCOG of 1 33 g/t From the calculation of

influence of striping ratio on open castcoalmining

Stripping ratio- Wikipedia. Inmining,stripping ratioorstrip ratiorefers to theratioof the volume ofoverburden (or waste ... removal prior to ore extraction, underground miningoperations tend to have lowerstrippingratios due to increased selectivity. ...Open-pitmining... Get Quote; SurfaceMining- ResearchGate. Feb 2, 2016 ...

Strip Mining an overview ScienceDirect Topics

Andrew P. Schissler, in Encyclopedia of Energy, 2004. 2.3Strip Mining.Strip miningis 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 miningis fundamentally different from contour or areaminingon how the overburden is displaced, called spoil handling.

CanIndonesia's coal mines maximise strip ratios andboost

Dec 16, 2016· Regional breakdown of break-evenstrip ratioand total cash costs at US$73/t price scenario; Top 16 mines on Q4 LoMstrip ratioand cumulative marketable production curve; Top 16 mines on breakeven LoMstrip ratioand cumulative marketable production curve; Percentage of change instrip ratioto break even relative to coal quality 4,200GAR at ...

Key Financial Ratiosto Analyzethe Mining Industry

May 08, 2020· The quickratiois important for evaluatingminingcompanies because of the substantial capital expenditures and financing necessary formining…

8 Break EvenStrippingRatioBESRMaximumStrippingRatioSR

Break EvenStripping Ratio(BESR)/MaximumStripping Ratio(SR max)/Cut offStripping Ratio: This is defined as thatstripping ratioat which cost ofminingone tonne of ore & corresponding volume of waste material equals the revenue received by sale of one tonne of orebody OR when cost ofminingore & waste matches with revenue generated by sale of ore. • Overall Pit Limit is decided by Break ...

Surface Mining Methods ILO Encyclopaedia

The fraction of waste rock to ore excavated is defined as thestripping ratio.Strippingratios of 2:1 up to 4:1 are not uncommon in largeminingoperations. Ratios above 6:1 tend to be less economically viable, depending on the commodity. Once removed, overburden can be used for road and tailings construction or may have non-miningcommercial ...

strip ratio mining Auto Gyro Africa

Sep 16, 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.

best strip ratio in iron ore mining

20181018&ensp·&enspStrip ratio decreased from 7.4 to 2.2 due to mining returning to ore after waste mining in Q4 for TSF lift Prestrip mining of higher grade satellite pits Dogbolter & Anchor continued (first production expected in Q2) Q1 AISC of $898 per ounce (down 22% on Q4) reflective of substantial decrease in strip ratio

TV BIP Ratio Explained The Economics of OilSandsMining

The strip ratio (SR) is the simplest measure of mining efficiency. Defined as the weight of overburden (or waste ore) divided by the weight of oil sands ore, a strip ratio of 2 is considered high but feasible if the ore grade is high enough. A better measure of mining economics is the TV:BIP ratio.

8 Break EvenStrippingRatioBESRMaximumStrippingRatioSR

Break EvenStripping Ratio(BESR)/MaximumStripping Ratio(SR max)/Cut offStripping Ratio: This is defined as thatstripping ratioat which cost ofminingone tonne of ore & corresponding volume of waste material equals the revenue received by sale of one tonne of orebody OR when cost ofminingore & waste matches with revenue generated by sale of ore. • Overall Pit Limit is decided by Break ...

stripping ratiocalculation inmining

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 ore. For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock. what is stripping ratio coal mining ppt

break evenratiofor australia coalmining

StrippingratioWikipedia. Inmining stripping ratioorstrip ratiorefers to theratioof the volume of overburden (or waste material) required to be handled in order to extract some tonnage of ore.For example a 3 1stripping ratiomeans thatminingone tonne of ore will requiremining…

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