Lecture 4 Calculating Stripping Ratios for Area Strip Mines.pptCalculating Stripping Ratios for Area Strip Mines . “Elements of Practical Coal Mining” and SME's “Surface Mining” were . The Coal Area Strip Mine Formula.formular for calculating strip ratio in mining,formular for calculating strip ratio in mining,Stripping ratio - WikipediaIn 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.
Then the final pit would stop with the mining of bench 9. . Break-even stripping ratio Typical Calculation Process • Find Costs, Ore Grades, .. Of Optimum Cutoff Grades When The Mill Is Bottleneck Formula for Optimum Cutoff Grade c + f + Fi.
Jun 9, 2016 . As a result, mining companies calculate strip ratios for open-pit projects well before they enter development and production, and seek out.
calculate various stripping ratios for given situations (C, Ap) 3. explain the . by surface mining or underground mining from the limiting stripping ratio (A, S, E).
Calculating Stripping Ratios for Area Strip Mines . “Elements of Practical Coal Mining” and SME's “Surface Mining” were . The Coal Area Strip Mine Formula.
The stripping ratio refers to the amount of waste rock vs. ore (as opposed to mineralization) or, more precisely, how…
We divide the overburden thickness by ore thickness to get the stripping ratio For . of 80m and ore thickness of 50 m , then the stripping ratio will be: 80/50= 1.6. . Industries and Professions Mining How do you calculate the stripping ratio? .. It can be calculated by the following two formulas:- 1) VR = Velocity of effort/.
Then the final pit would stop with the mining of bench 9. . Break-even stripping ratio Typical Calculation Process • Find Costs, Ore Grades, .. Of Optimum Cutoff Grades When The Mill Is Bottleneck Formula for Optimum Cutoff Grade c + f + Fi.
Accounting for the costs of removal of waste material in a surface mining ... (using the same formula as the average strip ratio) calculate an actual strip ratio of.
Jul 20, 2013 . A methodology applicable at any phase of a surface mining project for . stripping ratio R and the grade of ore T. It is therefore essential to determine what .. Substituting these variables in the profit function formula, a direct.
1CAMCE Mining and Tunneling, Lougheed Hwy, Burnaby, Canada . stripping ratio, representing the fundamental nature of resource and economic . The overall ore grade at benches is calculated according to operating cost model provided, while cutoff ... calculated using the formula presented in this paper, then.
High stripping ratio, seams with complex metallurgy characteristics, mines . The main shortcoming of O'Hara's estimation relates to the expansion of Equation 1.
Feb 10, 2017 . The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. In relation.
Introduction. This handbook on surface strip coal mining serves as a general introduction to the subject of .. 1.3 PRODUCTION COST AND STRIPPING RATIO. ANALYSIS. 8 ... The revenue portion of the equation can be written as;. Revenue.
stripping ratio means that mining one cubic meter of ore will require mining three ... Thus, the price component in the equation is largely determined by others.
cost calculations and the determination of tho di~countc:d cash !low retl.1rn on investment. INTRODUCTION . ratios, equipmcnt capabilities, sequencing and selective mining . mUltiple-sewn strip-mining industry seems as favorable as. Iltat predicted for the ... The basic formulae used for these calculations are as follows:.
differing mining methods enable different options including stripping ratio for ... Selecting Open Pit allows you to use the O'Hara formula to calculate the.
OPENCAST MINE PLANNING, DEPLOYMENT OF HEMM FOR OPTIMUM. UTILISATION, TOTAL . 3) Shallow initial depth of the coal deposits (Stripping ratio 0.6 to 6): less gestation period. ... Gray's Formula – d = 0.564 W/B – L. Where,.
Mining. Project optimization. Otimização de projeto. Carla De Carli .. For the UG scenario, the BCOG is calculated with the same equation utilized in the . The ASR is characterized by the maximum stripping ratio practiced in an open pit mine.
IFRIC 20, Stripping Costs in the Production Phase of a Surface Mine, 1 January 2013 ... The average stripping ratio is calculated as the number of tonnes of waste .. based on a formula that takes into consideration the profit attributable to the.
ratio is reached in contour mining or in slot mining when surface access to a reserve .. Equation 1 is sensitive to in-situ coal strength so care must be exercised.
Oct 15, 2015 . By Geordie Matthews, Senior Mining Geologist, Golder Associates . This article examines how to reduce the strip ratio through minimising the.
Chapter 2 Planning and Design of Surface Mining. 2.1 Definition of Mining .. in the formula. . If the calculated stripping ratio is greater, the pit limit is contracted.
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