what is stripping ratio al mining

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, that must be moved in ...

Stripping ratio - Wikipedia

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight. Whereas in metal mining, stripping ratio is unitless and is expressed as weight/weight. A stripping ratio can

What Is a Stripping Ratio? (with picture)

Jan 12, 2021  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.

Stripping Ratio Mineral Production Activities ...

6. Stripping ratio . The main factor in designing a n open pit mine, which largely determines the cost of mining, is the stripping ratio.. Stripping is the removal of waste rock from above and around the orebody. Stripping ratio is defined as the tonnage of waste rock to be mined, divided by the tonnage of ore to be mined from the pit.

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: It

Stripping ratio mining Britannica

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 ratios can also consider the selling price of coal, and a certain minimum profit can be added to the total cost of producing and

(PPT) Calculating Stripping Ratios for Area Strip Mines ...

The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 11.11/ 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  * Thus in coal SR is the number of BCM of waste that needs to be removed to uncover 1 t of coal * Some applies in other bedded deposits. b. Ore miners measure both waste and ore in tons or tonnes. ... Switch to underground mining if your stripping ratio is more than BESR. a. May or may not be economically feasible * Consider value of ore. b ...

Determining Stripping Ratio - Basic Mining Techniques

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.

Coal Ratio - an overview ScienceDirect Topics

Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour mining equipment includes a drill, loader, bulldozers, and trucks. The steps in contour mining begin with drilling and blasting a triangle shaped portion of overburden (in cross section) above the coal to be mined.

Stripping ratio - Wikipedia

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight.

mining engineering: STRIPPING RATIO (S)

Jun 06, 2010  * Thus in coal SR is the number of BCM of waste that needs to be removed to uncover 1 t of coal * Some applies in other bedded deposits. b. Ore miners measure both waste and ore in tons or tonnes. ... Switch to underground mining if your stripping ratio

(PPT) Calculating Stripping Ratios for Area Strip Mines ...

The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 11.11/ 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 ...

Determining Stripping Ratio - Basic Mining Techniques

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.

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.

(PDF) Stripping Ratios, Pit Limits Cutoff Grade ...

Stripping RatiosThe 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 most commonly expressed as: Stripping RatiosInstantaneous stripping ratio: The stripping ratio for a given push back Overall stripping ratio: The stripping ratio for the total amount of material removed.

Lecture 4 Calculating Stripping Ratios for Area Strip ...

The Coal Area Strip Mine Formula Strip Ratio = OB Thickness (in ft) * 11.11/ 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

In coal mining what is a good strip ratio? - Answers

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.

Surface Coal Mining Methods in Australia

Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and

what is stripping ratio gypsum mining ppt

Lecture 4 Calculating Stripping Ratios for Area Strip . 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

Basic Mining Techniques

Basic Mining Techniques

Internal Revenue Service

Mining Industry Overview 5 9/19/2007 Industry Overview The industry program includes issues and trends in coal, metal and non-metal segments of the U.S. mining industry. These mining operations include prospecting, exploration, development, production, mineral processing, environmental restoration and reclamation,

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. Read more

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,

Stripping ratio - Wikipedia

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight.

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.

What is STRIPPING RATIO? What does STRIPPING RATIO mean? STRIPPING RATIO meaning explanation - YouTube

Aug 24, 2017  theaudiopedia What is STRIPPING RATIO? What does STRIPPING RATIO mean? STRIPPING RATIO meaning- STRIPPING RATIO definition - STRIPP...

Glossary of Mining Terms - Coal Education

In coal mining this is the intended basis for roof bolting. Bearing – A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. ... in strip-mining, ... Stripping ratio – The unit amount of overburden that must be removed to gain access to a similar unit amount of ...

What is STRIP MINING? What does STRIP MINING mean? STRIP MINING meaning, definition explanation

Apr 06, 2017  theaudiopedia What is STRIP MINING? What does STRIP MINING mean? STRIP MINING meaning - STRIP MINING definition - STRIP MINING expl...

What is Strip Mining? (with pictures) - wiseGEEK

Jan 24, 2021  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. Classically, strip mining is used to mine tar sand and coal. This technique is also referred to as open cast, open cut, or stripping.

181089468-Mine-Planning-Design.ppt Coal Mining Mining

Stripping ratio = OB Volume (D) / Coal in tones (C) For accurate S.R,the volumes of OB and coal are to be made seam wise B. Final pit limits Contd. The boundaries are firmed up based on the economic stripping ratio. Economic stripping ratio varies with:

Surface mining planning and design of open pit mining

Jan 09, 2016  vii) Stripping Ratio The ratio is most commonly expressed as: Strip Ratio (SR) is the mass of waste to be mined to obtain one unit mass of ore. Waste (tons) SR = ----- Ore (tons) For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

Understanding Iron Ores and Mining of Iron Ore – IspatGuru

Apr 03, 2015  The economic stripping ratio varies widely from mine to mine, depending upon a number of factors. In the case of direct shipping ores, it may be as high as 6:1 or 7:1. In the case of low grade ore , a stripping ratio of less than 1.5:1 is often considered as an economic limit. For mining of the iron ore, it is essential to uncover the mine area ...

Internal Revenue Service

Mining Industry Overview 5 9/19/2007 Industry Overview The industry program includes issues and trends in coal, metal and non-metal segments of the U.S. mining industry. These mining operations include prospecting, exploration, development, production, mineral processing, environmental restoration and reclamation,

What is stripping ratio in mining? - Quora

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...

Coal Types, Formation and Methods of Mining - epcamr.org

Surface Coal Mining. Surface mining is accomplished by removing overburden from the coal seam and then blasting and removing the coal. The ratio of overburden excavated to the amount of coal removed is called the overburden ratio. The lower the ratio, the more productive the mine. The lowest overburden ratios are found in western surface mines.

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

Jan 13, 2021  The stripping ratio in open-pit mining is important because the profitability of that particular mining venture hinges on the ability of the company to gain more from the extraction process than what it expends in order to obtain access to the material.

what is stripping ratio gypsum mining ppt

Lecture 4 Calculating Stripping Ratios for Area Strip . 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