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Stripping Ratios: What are They and Why are They Important

Oct 31, 2018A 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

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Stripping ratio and pit limit Basic Mining Techniques

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 (t) is usually

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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 three tonnes of waste rock. Stripping ratios are typically reduced to show the volume of waste removal required to

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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

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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.

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What Is a Stripping Ratio? (with picture)

Aug 08, 2020The 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.

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Coal mining Choosing a mining method Britannica

Coal mining Coal mining Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on

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Mining Britannica

Large stripping machines with excavating wheels used in surface coal mining are employed in other types of open-pit mines. Water inflow was a very important problem in underground mining until James Watt invented the steam engine in the 18th century. After that, steam-driven pumps could be used to remove water from the deep mines of the day.

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Surface mining planning and design of open pit mining

Jan 09, 2016vii) 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.

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zakaria_jaya: ANALISA STRIPPING RATIO

Jan 30, 2010Stripping Ratio = Tanah Penutup (ton)/Batubara (ton) Perbandingan antara tanah penutup dengan batubara juga dapat dinyatakan melalui perbandingan volume, akan tetapi perbandingan ini hanya bisa diterapkan apabila density dari kedua material sama. D. Break Even Stripping Ratio (BESR)

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3-5 Foul Condensate Stripping

Foul Condensate Stripping Ben Lin, P.Eng. A. H. Lundberg Systems Limited Vancouver, B.C., Canada 2008 Kraft Recovery Short Course 2 Agenda 1. Introduction 2. Stripping Basics 3. Stripping Equipment 4. Stripper Integration 5. Stripper Operation

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what is stripping ratio coal mining

Stripping ratio Wikipedia, the free encyclopedia. In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material

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Visual Encyclopedia of Chemical Engineering

The packing enhances the stripping by increasing the amount of contact between the two streams. After leaving the column, the vapor is either distributed into the atmosphere or is collected for purification. Equipment Design Steam stripping columns contain either trays or packing, depending on the application.

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What Is Laundry Stripping and Does It Work How to Strip

Aug 19, 2020Laundry stripping isn't new by any means: Add borax, washing soda (sodium carbonate), and laundry detergent in a 1:1:2 ratio. For a bathtub, add 1/4 cup borax, 1/4 cup washing soda, and 1/2

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ALCOHOL DISTILLATION: BASIC PRINCIPLES, EQUIPMENT

Rectifying Stripping Column Energy Reflux column column Energy use diameter ratio ratio stages stages (BTU/lb.) (in.) in/out----- 2.5 10 16 1540 5.0 .15 3 8 7 1760 5.3 .17 3.5 8 5 1980 5.7 .19 4 7 5 2200 6.0 .21 5 7 4 2630 6.5 .26 6 7 3 3070 7.1

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Line StripersLine Marking Equipment

Professional striping contractors prefer Graco line stripers to deliver the highest quality and unmatched performance on airports, parking lots, road construction zones and more. From small walk behind stripers to large truck mounted systems, there is a Graco

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GrindingScarifying Equipment Graco

GrindingScarifying Equipment. Graco’s grinders and scarifiers are the choice of contractors looking to remove pavement markings, perform inlay grooving, and smooth uneven surfaces. Our pavement marking removal equipment delivers unmatched results while being able to handle the daily demands of professional contractors.

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What is difference between distillation and stripping

Aug 28, 2016The difference between distillation columns and stripping columns lies in the difference between distillation and stripping itself Distillation is the concept of separating a mixture of liquids into its constituents by making use of their differen...

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IFRIC 20 — Stripping Costs in the Production Phase of a

Aug 26, 2010IFRIC 20 considers when and how to account separately for the benefits arising from the removal of mine waste materials ('overburden') to gain access to mineral ore deposits, as well as how to measure these benefits both initially and subsequently. IFRIC 20 was issued on 19 October 2011 and applies to annual periods beginning on or after 1 January 2013.

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Topic 5: Mining Methods-Part I-Surface mining

Nov 02, 2011Strip-mining: Blast, scoop off rock overburden, and then scoop out ore material. Fairly shallow. Economics of strip mining depend on stripping ratio Large land area can be involved, especially for coal and bauxite. Strip mining. Example: Alcoa’s Sierra de Bahoruco Aluminum mining in D.R. Southern Peninsula until 1985 39.

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7 Tips for Ideal Fertilizer Placement in a Strip-Till

Strip-till offers advantageous placement of fertilizer in the root zone, but there are still many decisions for a farmer to make when he takes to the field. Approaches to placement vary regionally and farmers agree that there are no one-size-fits-all strategies, but there are some considerations worth making. From depth, timing and rate to season, product and method, strip

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Useful online formula for press tool design

P= ( L x S x Tß ) / 10 P = Stripping force S = Material thickness L = Total cutting length

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Air Stripping Pennsylvania State University

Air/Water Ratio • Air/water ratio flowing through the air stripper is extremely important in determining efficiency • It is dependent on the concentration and physical properties of the contaminant. One can look at the Henry’s constant to determine the needed ratio. Typically a good first estimate is: A/W = 16,000*H C

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Recent Development in Ammonia Stripping Process for

Ammonia removal via air-stripping technique in the rotating packed bed reactor was conducted by Yuan et al. to enhance the high volumetric gas-liquid mass transfer coefficients, as well as to reduce the fouling problem, the equipment size, and the cost incurred, as an attempt to overcome the shortcomings detected in the conventional ammonia

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what is stripping ratio coal mining

Stripping ratio Wikipedia, the free encyclopedia. In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material

get price

What Is Laundry Stripping and Does It Work How to Strip

Aug 19, 2020Laundry stripping isn't new by any means: Add borax, washing soda (sodium carbonate), and laundry detergent in a 1:1:2 ratio. For a bathtub, add 1/4 cup borax, 1/4 cup washing soda, and 1/2

get price

3-5 Foul Condensate Stripping

Foul Condensate Stripping Ben Lin, P.Eng. A. H. Lundberg Systems Limited Vancouver, B.C., Canada 2008 Kraft Recovery Short Course 2 Agenda 1. Introduction 2. Stripping Basics 3. Stripping Equipment 4. Stripper Integration 5. Stripper Operation

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Recent Development in Ammonia Stripping Process for

Ammonia removal via air-stripping technique in the rotating packed bed reactor was conducted by Yuan et al. to enhance the high volumetric gas-liquid mass transfer coefficients, as well as to reduce the fouling problem, the equipment size, and the cost incurred, as an attempt to overcome the shortcomings detected in the conventional ammonia

get price

What is difference between distillation and stripping

Aug 28, 2016The difference between distillation columns and stripping columns lies in the difference between distillation and stripping itself Distillation is the concept of separating a mixture of liquids into its constituents by making use of their differen...

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How to Clean Rusty Steel With Muriatic Acid Sciencing

Mar 30, 2020You can clean rusting metal wth muriatic acid, but because this acid also reacts with iron, it may do more harm than good if used improperly. A better option for rust removal around the house is any commercial product that contains phosphoric acid, which works more slowly but is safer to handle.

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7 Tips for Ideal Fertilizer Placement in a Strip-Till

Strip-till offers advantageous placement of fertilizer in the root zone, but there are still many decisions for a farmer to make when he takes to the field. Approaches to placement vary regionally and farmers agree that there are no one-size-fits-all strategies, but there are some considerations worth making. From depth, timing and rate to season, product and method, strip

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Surface Mining Techniques used in the Oil Sands Oil

The strip ratio (SR) is the simplest measure of mining efficiency. Strip ratio is the fraction of overburden (or waste ore) versus the weight of bitumen-rich oil sands. A strip ratio of 2 is considered high but feasible if the ore grade is high enough. A better measure of mining economics is the TV:BIP ratio. TV:BIP is defined as the total

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CHAPTER 11 Mining Technology Princeton University

and equipment include the thickness and character of the overburden, the dip of the seam, the thickness and number of recov-erable seams, and the physical and chemical characteristics of the coal. The three surface mining techniques most widely used in the West are area strip, open pit, and terrace pit. Area Strip Area strip is the principal

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Topic 5: Mining Methods-Part I-Surface mining

Nov 02, 2011Strip-mining: Blast, scoop off rock overburden, and then scoop out ore material. Fairly shallow. Economics of strip mining depend on stripping ratio Large land area can be involved, especially for coal and bauxite. Strip mining. Example: Alcoa’s Sierra de Bahoruco Aluminum mining in D.R. Southern Peninsula until 1985 39.

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New CPT Codes for INR Testing Reimbursed by Medicare

Jan 18, 2018By:Jacqueline Thelian, CPC, CPC-I, CHCA CPT 2018 introduces new codes for home and outpatient International Normalized Ratio (INR) services. The new codes are more user friendly than the former INR CPT codes 99363 and 99364 which were deleted for 2018. The new codes include the ordering

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How to Remove Wallstone in a Few Simple Steps HGTV

12 Best Exercise Equipment for Your Home Gym Aug 31, 2020. By: Maria Conti and Farima Alavi Ferguson. 12 Cozy Bedroom Buys You Need for Fall Aug 28, 2020. By: Katie Friedman. 15 Cute Outdoor Doormats to Welcome Fall Aug 27, 2020. By: Deanne Revel. How to Clean Every Single Thing on

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What Is Laundry Stripping? How to Strip Towels Cleaning Method

May 15, 2020“Stripping towels helps to eliminate any odors from the fabric and allows the washing soda, and laundry detergent in a 1:1:2 ratio. For a bathtub, we recommend ¼ cup borax, ¼ cub washing

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Printed Circuit Board Fabrication Tin Stripping

The ultimate goal at this point in this process is to strip the electroplated tin or tin/lead. To facilitate this mechanism, the tin or tin/lead must be oxidized. Oxidation is the first step in any metal stripping process, and the purpose of which is to remove electrons from a substance.

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