Stripping Ratio Coal Mining Comp

Stripping ratio - Wikipedia

In 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.

Stripping Ratios: What are They and Why are They Important ...

2018/10/31 · 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 …

Stripping Ratio | Mineral Production Activities | Extractives Hub

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. Stripping ratio is influenced by the shape of the orebody and may vary considerably during the life of the mine.

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

For open pit mining the costs are $0.40/ton ore and a stripping cost of $0.50/ton of waste. 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. With mining of bench 8, …

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.

(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 – …

How to calculate stripping ratio? - ResearchGate

2020/11/27 · 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) / …

Basic Mining Techniques

Basic Mining Techniques

LAND DEGRADATION DUE TO MINING AND ITS ...

As demand for coal increases to meet the country’s energy requirement, the coal companies are digging deeper and deeper and even opting for lower grades of coal. The country is even planning for production from 300 m depths at stripping ratio of 1:15 for D and F grade quality of coal.

(PDF) Surface Mine Design - ResearchGate

2017/03/13 · It should be noted here that a stripping ratio of 2 to1 means t hat there is twice as much waste rock mined as mineral (ore, coal, etc.). Two types of methods may be used in surface mining ...

DRAFT ENVIRONMENTAL IMPACT ASSESSMENT ...

9 Average Stripping Ratio 5.06(Cum/ tonne) 10 Average Stripping Ratio for balance OB and coal 4.17 (Cum/ tonne) 11 Area of excavation on surface 363.90 ha 12 Names of …

Coal mining strip mining educational video - YouTube

2017/05/04 · Mining

Surface Coal Mining Methods in Australia - IntechOpen

Surface Coal Mining Methods in Australia 7 Fig. 4. Dragline Working Section (Gianazza, 2010). Fig. 5. Box cut, strip cuts and spoil piles (Humphrey, 1984). mining …

GOTITORIA EAST & WEST MINE - MSTC E-Commerce

Method of Mining Opencast Balance Coal Reserve 4.922 MT (balance extractable) Mine Plan Extraction Rate 0.3 MTPA Average Stripping Ratio 6.5-7 Mining Agency BLA Industries Pvt Ltd 3.

Coal Mining | Surface Mining - Scribd

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 …

Productive, Safe and Modern Coal Mining Operation

Coal Mining Process Flow Our Process Bara Alam Utama mining operates surface mining operations with low stripping ratio and large scale equipment to optimize economic scale of long distance hauling transportation, majority of the mining activities consist of removal of overburden and extraction of coal

An approach towards ascertaining open-pit to underground ...

of OP mining is the Stripping Ratio (SR), by which is on the whole meant the volume of removed waste per unit of mineral (m3 per m3, or m3 per ton). The parameter known as the SR is almost universally used and represents the amount of

Availability of Coal Resources for Mining in Illinois

12 Stripping ratio of the Herrin Coal, Shawneetown Quadrangle 18 13 Availability of the Herrin Coal for surface mining, Shawneetown Quadrangle 20 14 Thickness of the Springfield Coal, Shawneetown Quadrangle 22 15 Depth of ...

Thar coal - too little, too late | The Express Tribune

2021/01/12 · Current production cost of Thar coal is $61 per ton, more than twice the international cost of similar coal under comparable geological and mining conditions like stripping ratio, water and ...

Coal mining - Choosing a mining method | Britannica

2021/01/26 · 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 marketing the coal for a more thorough cost-benefit analysis. Analysis of world coal production indicates that contributions from surface and underground production are approximately equal.

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