Dec 04 2011 · At a gold price of US1000 per ounce the value of the gold in the block of ore is just under 96 100031 X 3 or 1000 per ounce 31 grams troy ounce X 3 grams of gold Simply put if it were to cost more than 96 to mine treat and extract the gold from that tonne of ore it would be uneconomic to mine
[email protected]The formula is as follows TAC Cost to Acquire Cost to Build Cost to Operate Total Ounces For detail on all of the above metrics take a free trial of our mining financial modeling and valuation course More Mining Valuation Resources This has been a free guide to mining asset valuation techniques
Get PriceJan 16 2017 · And to convert the 15Mt of ore processed each year using the formula stated above we multiply it by the grade of 28gt from the reserves table above For rest of the article or to download
Get PriceThis is for 2 primary reasons 1 to be able to compare among other gold companies in the industry and 2 since the gold price is an important economic indicator for the economy in general and for mining specifically one can easily assess the viability of a mine by netting the gold price by the operating cost which are both stated in per
Get PriceThe geometry of a mill with conical ends is shown in Figure 86 The total volume inside the mill is given by Vm 4 D2 mL 1 2Lc L L 1 DtDm 3 1 DtDm 816 The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill
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Get PriceRecovery and dilution usually are interrelated with some methods of stoping a high recovery involves contamination of the ore from the walls or capping and often clean ore can be obtained only by leaving some ore in the mine In openstope mines the greatest loss of ore is that tied up in pillars left for support of the back or hanging wall The amount of ore thus left varies considerably
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Get PriceCutOff grade is the minimum grade required in order for a mineral or metal to be economically mined or processed Material found to be above this grade is considered to be ore while material below this grade is considered to be waste Although in a variety of units can
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Get PriceBefore you can calculate the potential mineral deposit value you first need to gather some specific data regarding the ore body and the individual drill results This required data can be found in the mining company’s press releases in which they announce their drill sure that this data is announced according to the guidelines of National Instrument 43101 ie approved by a
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Get PriceThe Gold Mine Investment Model is used to determine the financial feasibility of a proposed Gold Mine Investment The Financial Model outputs IRR and NPV based on Key Performance Indicators KPIs such as ore grade ore processed cost per ton and other relevant variables to the mining sector
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Get Pricecalculation of the required semiautogenous mill power based on the EURASIAN MINING 1 2015 milling and involve as a rule primary wet autogenous mill WAM and a series of ball mills set of empirical equations for estimation of mill power suffi cient for
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Get PriceThe production performance of mining equipment depends on its availability and utilization Hence it is necessary to determine the percentage availability and utilization of machinery with an aim to improve the same Different mines are following different terms and maintaining different information The only
Get PriceStebbins S A Leinart J B Cost Estimating for Surface Mines Chapter 49 published in SME Mining Engineering Handbook pp281293 Society for Mining Metallurgy and Exploration Inc 2011
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Get PriceThe cutoff grade used by most mining companies for the ‘processdo not process’ decision rightly or wrongly is the breakeven cutoff grade The breakeven grade is defined as the grade at which revenue obtained is equal to the cost of producing that revenue The simple breakeven formula to
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Get PriceIncreasing mining costs lower gold prices decreasing ore grades stronger environmental regulations and an ascending awareness for health and safety are currently some of the main challenges facing the gold mining industry Darling 2011 As all mining projects are unique
Get PriceSAG Mill Circuit Example Gold Processing SAG mill circuit example for gold processing image 13563 AGSAG Mill AGSAG mills are normally used to grind runoffmine ore or primary crusher product Wet grinding in an AGSAG mill is accomplished in a slurry of 50 to 80 percent solids 2D and 3D simulations of particles in a SAG Mill
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Get PriceValuing a Mining Company using Net Present Value Here is a simple down to earth way of describing Net Present Value NPV If you could take a gold mining project with all its gold all its costs and all its incomes and process the entire thing in 30 seconds – how much would you be left with
Get PricePlugging these numbers into a calculator and adding them together retrieves a Net Present Value at a 75 discount rate of 4324 million That tells us that the discounted cash flows of GoldMoons gold project totals 4324m in todays money at the Pretax level using a 1000oz gold price
Get PriceMine to Mill orientation of the cell Mine to mill is a process for optimisation of mining and processing recovery and costs The choice of either selective mining or bulk mining techniques is a major consideration however evaluations rarely undertake careful consideration of Mining Recovery and Mining Dilution in the context of mine to mill
Get PriceWet rod mill Rods lbkWh 035Ai – 0020 02 Liners lbkWh 0035Ai – 0015 03 Wet ball mill Balls lbkWh 035Ai – 0015 033 Liners lbkWh 0026Ai – 0015 03 Dry ball mill
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Get PriceCommon Basic Formulas for Mineral Processing Calculations Calculate Economic Metal Recovery By referring to the tables “Minerals and Their Characteristics” pages 332339 it is seen that the perfect grade of a copper concentrate will be 633 when the copper is in the form of bornite 798 when in the mineral chalcocite and 346
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Get PriceAs a result the copper and gold net smelter returns for copper concentrate sold to Smelter A are equal to 511 and 515 per tonne of concentrate or 4801 and 4837 per tonne of ore When these numbers are divided by the mill feed grade the copper and gold NSR factors are equal to 2069 per Cu and 1897 per gram of gold
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