Welcome To Our Mining Equipment Production Base!
##### what is stripping ratio coal mining ppt

· Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit mining process. The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. More.

##### Lecture 6alt Classic Open Pit Mining.ppt | Coal Mining ...

Coal Seam Gas Mining Facts And Problems PHYSICS. spets. ... Example Continued Finding the economic limit of the pit – The Much Dough Deposit can sustain stripping ratios of 5:1 before reaching break-even – How deep can the pit go? We will use a little computer program in Xcel ... Stripping Ratio for going down 1 bench when already have 1 ...

##### 3.2.6: Maximum Allowable Stripping Ratio (SRmax) | ABC 123 ...

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 ...

##### What is break even stripping ratio? - Answers

Break even point = fixed cost / contribution margin ratio Contribution margin ratio = sales price (3.7) - variable cost (2.5) / 3.7 Contribution margin ratio = …

##### what is stripping ratio for mine

Stripping Method Of Mining. For example, a 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock.Strip Mining for Coal YouTube,Sep 11, 2015· Almost 20 years since the strip mine began and …

##### (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 ...

##### Lecture 6alt Classic Open Pit Mining.ppt | Coal Mining ...

Classic Open Pit Mining. Issues and Characteristics ©2007 – minor modifications 2009 and 2010 Dr. B. C. Paul The concepts indicated in these slides are considered common knowledge to those familiar with the field. Many of these ideas have been published in a variety of different texts and papers over time – no one of which was specifically used as an outline for this work.

##### What Is a Stripping Ratio? (with picture)

The stripping ratio is commonly used in the ore and coal mining processes. ... if the mining company must extract one part of ore to three and a half parts of waste in order to break even, it stands to reason that the company will seek to look for mining sites where it can extract at least one part of ore to two and a half parts of waste in ...

##### Modeling for the Steady State Production of Large Open ...

1.3 BREAKEVEN STRIPPING RATIO The point beyond which the mineral/ coal cannot be economically extracted out is called the break even stripping ratio. Factors which play a great role in the stripping ratio calculation are: - Cost of stripping - Extracting cost of mineral/coal - Percentage of rejects - Cleaning cost of coal or ore dressing cost

##### ENGIN2503 Mining Engineering Assignment Help

For example, if stripping ratio is 4:1, it signifies that for mining 1 tonne of ore, it requires 4 tonnes of waste rock. Following are different types of stripping ratios that are used: i) Volumetric / Geometric stripping ratio. ii) Break-even stripping ratio. iii) Limiting stripping ratio. iv) Instantaneous stripping ratio

##### Stripping Ratio & Break even stripping ratio in Opencast ...

In this we will learn about Stripping Ratio & Break even stripping ratio in Opencast Mines, (surface mining) & all numerical covered.

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

This is the formula of stripping ratio :-Stripping Ratio :- BREAK EVEN STRIPPING RATIO :-Or, QUARRIABLE LIMIT:- The ratio of mineral bed thickness to the Overburden thickness for Mining of coal is as follows :-Mechanized Quarrying :-with shovel dumper – 1:4 to 5; with dragline – 1:8 to 10; bucket wheel excavator – 1:3 to 4 And with ...

##### Mine Planning Design, System and Analysis Flashcards | Quizlet

In coal mining, this is the creation of a strong, inflexible beam by bolting or otherwise fastening together several weaker layers: ... these are located on each section so the ore grade line supports a stripping ratio of corresponding to the break-even stripping ratio or allowable stripping ratio: from trucks performance charts on breaking and ...

##### ENGIN5505 Mine Planning and Scheduling Assignment Help

The delineated reserves, to date, total around 120 Mt of high quality coking coal. Overburden is a typical basin sedimentation stratigraphy, and all bedding is nearly parallel to the coal seam. 3.1 Stripping Ratio and Break Even Stripping Ratio - General data of coal mine. Coal price = \$74 (Online) Mining recovery = 94% (Assume)

##### strip ratio in coal mining - nordcoffeetech.fr

Surface Strip Coal Mining Handbook - sacea.org.za 1 introduction to surface strip coal mining 1.1 fundamental concepts and definitions 2 1.2 surface coal mining 5 1.3 production cost and stripping ratio analysis 8 1.3.1 stripping ratio for multiple seams 11 1.4 basic profit function analysis 13 2 geology and exploration 2.1 geology of south ...

##### what is stripping ratio coal mining crusher

break even stripping ratio example for coal mining crusher Crusher machine. Shenbang stone crushing equipment is designed to achieve maximum productivity and high reduction ratio. Get Price; Glossary of Mining Terms SEC. Stripping ratio The ratio of tonnes removed as waste relative to the number of tonnes of ore removed from an open-pit mine.

##### what is stripping ratio coal mining

Surface Strip Coal Mining Handbook - sacea.org.za 1 introduction to surface strip coal mining 1.1 fundamental concepts and definitions 2 1.2 surface coal mining 5 1.3 production cost and stripping ratio analysis 8 1.3.1 stripping ratio for multiple seams 11 1.4 basic profit function analysis 13 2 geology and exploration 2.1 geology of south african coal …

##### Break-even is broken - MINING.COM

If the 94% recovery value is used to determine a break-even grade, for an example the authors are familiar with (Poniewierski, 2016), the break-even grade would be 0.4 g/t, which implies a tails ...

##### 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 …

##### effect of stripping ratio in coal mining

Break Even Stripping Ratio Example For Coal Mining. Effect of stripping ratio in coal mining break even stripping ratio example for coal mining break even stripping ratio example for coal mining accounting for stripping costs in the seem that it s value does not have any effect on the stripping ratio strip mining an overview sciencedirect topics.

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

Auger mining is a surface mining techniq ue used to recover additional coal from a seam located behind a highwall produced either by stripping or open-pit mining.

##### Break Even Analysis - How to Calculate the Cut Off Grade ...

For conducting a mining project's break even analysis, you first need to know about the operational expenses (OPEX).When the OPEX is known, you can calculate the mineral's cut off grade, which is the break even grade, below which it is not economically viable to mine the ore.To find out how I come up with the cost price per tonne (OPEX) if a feasibility study isn't …

##### Whats the average stripping ratio of open pit mines around ...

Even if there was an average of ALL open pit mines that would not offer any knowledge regarding open pit mining. The stripping ratio in a mine is chosen based on economics.

##### waste stripping mining

break even stripping ratio example for coal mining . of OP mining is the Stripping Ratio ... the break even stripping ratio may not be supported by samples or measurements but the ... waste (stripping) ratio, ... GET PRICE. Campaign mining set-up …

##### ANALISIS BREAK EVEN STRIPPING RATIO UNTUK DESAIN PIT ...

Mine age of fixed BESR is 10 years. As dynamic BESR give total coal reserve 65.297.477 ton with NPV USD 826.886.944,92, IRR 85% and pay back period 1 year 7 month with 11 years of mine age. Kata Kunci : Break Even Stripping Ratio (BESR), Desain Pit, Batubara, Tamiang Layang, Kalimantan Tengah

##### Definisi Pertambangan | Pertambangan

SR = 1 = Bisa Tamka/Tamda. 2. Break Even Stripping Ratio (BESR) Yaitu perbandingan antara keuntungan kotor dengan ongkos pembuangan O/B. BESR = Cost Penggalian Bijih / Cost Penggalian OB. Untuk memilih system penambangan digunakan istilah BESR-1 bagi open pit yaitu overall stripping ratio. BESR-1 > 1 = Tamka.

##### TUTORIAL EXAMPLES - stripping ratios and cut-off grades ...

SOLUTION Break-even cut-off grade = Mining cost/t ore + concentrating cost per tonne ore (Metal price per tonne – SRM costs per tonne metal) x recovery Mining cost per tonne ore = Mining cost per tonne material x (1 + stripping ratio) Mining cost per tonne ore (\$1.47(1+1.5) = \$3.68 Concentrating cost per tonne ore = \$5.17 Metal price per ...

##### Rama Dauphian Gautama - Project Manager - PT Fajar ...

Feb 2012 - Apr 20208 tahun 3 bulan. Balikpapan, Kaltim. - Estimated Break Even Stripping Ratio (BESR) for Coal Surface Mining. - Evaluated and Review Yearly Plan Forecast Unit Equipment Production Overburden and Coal. - Evaluated and Review Yearly Plan Mining Sequence (pit and disposal) for Overburden and Coal based on Stripping Ratio.

##### Stripping ratio - Wikipedia

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.

##### Calculate the B.E.S.R in the mining and processing a ...

Selling price in concentrate \$1.63/kg Surface mining costs \$ 6.80/ton Surface stripping costs \$ 7.50/ton Overall (milling and Smelting) 92% BESR - Break Even Strip Ratio Question : Calculate the B.E.S.R in the mining and processing a 0.60% …

##### stripping overburden limestone mining

Lecture 4 Calculating Stripping Ratios for Area Strip . overburden costs 45 cents per cubic yard to move what is the maximum economic stripping ratio \$5.00/ 0.45 = just over 11 cubic yards per ton Called a Break Even Stripping Ratio Complexities Warning Units of Stripping Ratio depend on convenience of the industry Coal overburden is normally light and machines are …

##### 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.

##### break-even stripping ratio | Britannica

The break-even stripping ratio is a function of ore value and the costs involved. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.