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# stripping ratio strip

##### 剥采比_百度百科

2018-8-12  stripping ratio 学 科 核地质学 定 义 岩石量与采出的矿量的比值 剥采比的计量单位有三种：t/t、m/ m、m/t。一般常用的几种剥采比有： 1，平均剥采比是露天开采境界内总的岩石量与总的矿石量

##### 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 ...

##### 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 income generated by the ore is insufficient to offset the costs incurred in mining.

##### 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

##### (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.

##### (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 ...

##### stripping ratio - Chinese translation – Linguee

when the ac tual stripping ratio incu rred significantly exceeds the expected long term ave rage stripping ratio and are subsequently amortised when the ac tual stripping ratio fall s below the long term ave rage stripping ratio. 當實際發生的 剝採率明顯超出 預期的長期平 均 剝採率 時， 遞 延生產剝採成本，且此 ...

##### 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 ...

##### (PDF) Surface Mine Design - ResearchGate

2021-11-30  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

##### 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.

##### (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 ...

##### 3.2.5: Instantaneous Stripping Ratio ABC 123: Testing ...

2010-3-2  3.2.5: Instantaneous Stripping Ratio. 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.

##### Stripping ratio and pit limit - pngminers

2017-7-26  Stripping ratio determines where the pit limit will be. There are basically three (3) forms of stripping ratios. The overall stripping ratio (average stripping ratio), the maximum allowable stripping (break even stripping ratio), and the instantaneous stripping ratio (incremental stripping ratio). Fig1. Section of a proposed pit.

##### How do you calculate the stripping ratio? - Answers

2009-6-6  We divide the overburden thickness by ore thickness to get the stripping ratio For example if we have an overburden thickness of 80m and

##### Surface mining planning and design of open pit mining

2016-1-9  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

##### Overall Stripping Ratio - How is Overall Stripping Ratio ...

As Table 1 shows, the overall stripping ratio is 2.75:1; a total of 315.7 Mt of heap and dump leach ore and 868.3 Mt of waste will be mined. The current stripping ratio is 2:1 and the final overall stripping ratio will be 6:1 assuming the open pit is mined to its planned limits.

##### Sour water strippers: design and operation

2017-5-10  stripping factor (the ratio of vapour to liquid) for the strip-ping trays remain unaltered? The conclusion is that the preheat exchanger (E-1), the circulating reflux loop (E-2) and trays 33-40 serve no actual engi-neering purpose. (1) (40) (33) (32) Sour water feed 180ºF 190ºF 13 PSIG 140ºF 200ºF 90ºF Ammonia gas to sulphur plant To ...

##### Stripping and Reprobing Western Blots Thermo Fisher ...

Stripping and reprobing a western blot is a method in which the primary and secondary antibodies are removed from a western blot so the blot can be reprobed. A blot may be stripped and reprobed several times to visualize other proteins or

##### 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, called spoil handling.

##### Stripping ratio and pit limit - pngminers

2017-7-26  Stripping ratio determines where the pit limit will be. There are basically three (3) forms of stripping ratios. The overall stripping ratio (average stripping ratio), the maximum allowable stripping (break even stripping ratio), and the instantaneous stripping ratio (incremental stripping ratio). Fig1. Section of a proposed pit.

##### 3.2.5: Instantaneous Stripping Ratio ABC 123: Testing ...

2010-3-2  3.2.5: Instantaneous Stripping Ratio. 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.,

##### How do you calculate the stripping ratio? - Answers

2009-6-6  We divide the overburden thickness by ore thickness to get the stripping ratio For example if we have an overburden thickness of 80m and ore thickness of 50 m , then the stripping ratio will be ...

##### Opencast Working And Stripping Ratio » MiningPathsala

2021-6-30  stripping ratio :- It is generally expressed in the proportions of Overburden to coal or mineral removed. As the depth of Overburden increases more amount of money is spent for removal of the Overburden for exposing the mineral body / coal and the time

##### Surface mining planning and design of open pit mining

2016-1-9  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

##### Overall Stripping Ratio - How is Overall Stripping Ratio ...

As Table 1 shows, the overall stripping ratio is 2.75:1; a total of 315.7 Mt of heap and dump leach ore and 868.3 Mt of waste will be mined. The current stripping ratio is 2:1 and the final overall stripping ratio will be 6:1 assuming the open pit is mined to its planned limits.

##### Chapter 5 Absorption and Stripping

2011-3-14  Absorption and Stripping 5.1 Introduction In absorption (also called gas absorption , gas scrubbing , or gas washing ), there is a transfer ... supply the energy of vaporization needed to strip the water. This energy is greater than the ... constant or vapor-liquid equilibrium ratio. Table 5.2-1 list Henry’s law constant m for

##### Underground Mining Methods and Equipment

2020-8-25  employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation. Once the economic feasibility has been verified, the most appropriate mining methods must be selected according to the natural/geological conditions and spatial/geometric characteristics of mineral deposits.