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 …
AVERAGE STRIP RATIO: Total waste divided by total ore within the ultimate pit. CUTOFF STRIPPING RATIO: Costs of mining a ton of ore and associated waste equals to net revenue from the ton of ore.
Answer: 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 …
The units for stripping ratios can vary and usually depends on the geological properties of the deposit and the commodity mined. It can be expressed in tonnes (t), or cubic meters (m 3).Usually for coal, cubic meters (m 3) or tonnes (t) are used.However, for hard rock mines where the geology is usually complex with the presence of various rock types, tonnage …
Stripping Ratios, Pit Limits & Cutoff Grade Optimization. F. Barcelonistas. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. ... Optimal production scale of open pit mining operations with uncertain metal supply and long-term stockpiles. By Mohammad Asad.
stripping ratio calculation in mining. Stripping ratio Wikipedia. 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 will require mining … Read More
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…
The overall recovery is 92%. a. Calculate the BESR BESR = [ (0.006*0.92*1.63*1000) – (6.8)]/7.5 = 0.29 = 0.3 is 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).
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.
The most basic calculation of the strip ratio involves dividing the tonnage of waste material by the tonnage of ore material. ... higher strip ratios translate to high mining costs and this is ...
A high grade orebody can support a high stripping ratio. A low grade ore body cannot support a high stripping ratio. Thus you may have a range of stripping ratios from 1:1 to 1:15 or even more.
3.2.6: Maximum Allowable Stripping Ratio (SRmax) Earlier in this lesson, we looked at the maximum stripping ratio, and we did it for coal seam. You will recall that the maximum allowable stripping ratio, SR max, also called break-even stripping ratio, is the maximum amount of overburden/waste that can be extracted per unit of ore at the ...
The stripping ratio (SR) refers to the amount of waste material that must be removed for a given amount of ore. The Instantaneous Stripping Ratio (ISR) is the stripping ratio for a given push back, where a tiny slice of material, i.e., ore and/or waste, is removed from a pit wall. This section presents the ISR calculation for a steeply pitching ...
How To Calculate Stripping Ratioyour query :- calculation of stripping ratioStripping ratioGate MN 2016Gate mining
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 ...
life is good fthe 2d cross section area = base * height interest item – slope angle has no effect overburden the problem is 1d only depends on thickness and density base for both coal and the overburden is the same that means the base will cancel! fthe coal area strip mine formula • strip ratio = ob thickness (in ft) * 11.11/ coal …
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 ...
The SR max is determined solely by economics, to establish the ultimate boundary of the pit, where break even occurs, i.e. the profit margin is zero. As we defined it before, SR max ( yd 3 /ton) = Ore Revenue ($/ton)-Production Cost ($/ton) Stripping Cost ($/yd 3) (Equation 3.2.7) So, it is a physical quantity that is determined by economics.
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 100 meters and an ore...
Costore = Mining cost of ore per ton = 2.2 €/t (Ore density is usually higher than that of waste; therefore, mining ore is usually costlier.) Costprocessing = Cost of processing ore per ton = 12 €/t. Price = Final selling price = 5000 €/t. Rec = Average recovery at the plant = 82% ratio = Stripping ratio (waste/ore ratio) = 2.
Stripping ratio is expressed broadly as the ratio of waste to ore. It's simply calculating how much waste has to be removed to expose how much of ore to be mined. Stripping ratio determines where the pit limit will be. There are basically three (3) forms of …
stripping ratio calculation in mining Stripping ratio Wikipedia. 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 will require mining … Read More
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 most commonly expressed as: Waste (tons) SR = Ore (tons) A wide variety of other units are used as well. In strip coal mining
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