strip ratio in coal mining in Ecuador

strip ratio in coal mining in Ecuador

Whats the average stripping ratio of open pit mines

Hardrock would be in the region of 12t:1t but when Platinum was booming we say SR as high as 20:1. There cannot be a specific average stripping ratio of open pit mines around the world, simply ...

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

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 SME’s “Surface Mining” were specifically referenced fStripping Ratio as a ...

Determining Stripping Ratio - Basic Mining Techniques

2016-4-4 · 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

Rational economic stripping ratios: International Journal ...

2008-4-2 · ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block.

Blasting Principles - Orica

Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to reduce damage and backbreak to the rock left behind.

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

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

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

What Is a Stripping Ratio? (with picture) - wiseGEEK

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.

Surface Coal Mining Methods in Australia - IntechOpen

2018-9-25 · 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

(PDF) Surface Coal Mining Methods in Australia

2021-11-21 · Overall mining sequence of a typical surface coal mine in Australia (after Westcott et. al., 2009). 2.1 Dragline method. Dragline is the predominant mach ine which is used to remove the overburden ...

Stripping Ratios: What are They and Why are They

2018-10-30 · 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 ...

Rational economic stripping ratios: International Journal ...

2008-4-2 · ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block.

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

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

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

Blasting Principles - Orica

Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to reduce damage and backbreak to the rock left behind.

Annex – Coal 2020 – Analysis - IEA

A technique used to remove coal from a natural deposit. Coal deposits in the Earth’s crust occur at various depths and seam configurations, which determine the mining method used. Generally, deep deposits are mined underground and shallow deposits are opencast mines. The strip ratio largely determines whether an opencast mine is profitable or ...

ASX: ATU 16 April 2020 ELAN PROJECT SCOPING STUDY

2020-4-15 · Mining - total Total ROM coal mined Mt 126.2 126.2 Total waste mined Mbcm 541.4 541.4 Strip ratio (ROM) bcm/t 4.3 4.3 Product output Processing yield % 60 60 HCC production Mtpa saleable 6.0 4.5 Total product coal Mt 76 76 The implied product coal LOM strip ratio for the Elan Project is approximately 7.1 bcm/t HCC. This product strip ratio is ...

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

2010-7-29 · To surface mine we need to remove some waste in addition to ore / coalc. SR measures how much waste needs to be removed so that a unit of ore/coal can

Surface Coal Mining Methods in Australia - IntechOpen

2018-9-25 · 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

Chapter 2: The Environmental Effects of Strip Mining - The ...

2021-11-11 · This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining, auger mining, and mountaintop removal. Underground mining is also considered in this section. Terrain, economics, and custom generally dictate which technique an operator chooses.. All surface or strip mining first removes the overlying vegetation, soil and underground ...

Stripping Ratios: What are They and Why are They

2018-10-30 · 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 ...

Rational economic stripping ratios: International Journal ...

2008-4-2 · ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and defining run of mine recovery and mining cost as dynamic variables dictated by the thicknesses, depths and number of seams within a mining block.

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

Blasting Principles - Orica

Strip Ratio. The ratio of waste material to ore or coal moved in a defined period. Stope. An underground void formed by the mining of ore, as distinct from development. Surface Mine. Refer to open cut mine. T Trim Blast. A blast designed to reduce damage and backbreak to the rock left behind.

pwc 2012 Americas School of Mines

2015-6-3 · 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

Global Natural Resources Conference

2021-11-10 · life of the deposit, copper growth, C1 cash costs and AISC costs, strip ratio, throughput rate and potential to become a top five global copper producer, reserve and resource estimates, first production expectation, and all other projections included in ... and expectations of stable long term strip ratio; the statement that steelmaking coal ...

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

2010-7-29 · To surface mine we need to remove some waste in addition to ore / coalc. SR measures how much waste needs to be removed so that a unit of ore/coal can

Mining Terms - kau

2008-11-12 · Strip Mining: Bedded deposits –coal, phosphates . Quarry Mining: aggregates, marble, granite . ... Stripping Ratio: is the ratio of a unit of waste material removed per similar unit of ore material removed. Toe: is the base of a bank bench or a slope. Waste Dump: ...

Chapter 2: The Environmental Effects of Strip Mining - The ...

2021-11-11 · This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining, auger mining, and mountaintop removal. Underground mining is also considered in this section. Terrain, economics, and custom generally dictate which technique an operator chooses.. All surface or strip mining first removes the overlying vegetation, soil and underground ...

Rio Tinto sets ambitious autonomy targets - Australian

2021-10-22 · “Our strip ratio was 1.4 in 2018 and has increased year on year to 1.8 in 2021, placing upwards pressure on our mining costs and reinforcing the importance of our productivity programme.”