# iron ore cut off grade calculation

Optimum cut-off grade's calculation in open pit mines with regard to .The most comprehensive method for determination of optimum cut-off grades in metal deposits with the goal of maximising the net present value is provided by.iron ore cut off grade calculation,Determination of optimum cutoff grades of multiple metal . - SAIMMalgorithm. Based upon the Lane algorithm it is possible to calculate the optimum cutoff grade for mine, mill, and refinery capacities for single metal deposits with.

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Using equivalent grade factors to find the optimum cut-off.Dec 19, 2017 . The optimum equivalent cut-off grade of main metal can be found by the . deposits: Application to recoverable mineral resource estimation at.iron ore cut off grade calculation,determination of optimal mining cut-off grades . - ResearchGateOct 18, 2016 . 1.2 Definition of Cut-Off Grade. 1.3 Calculation of Marginal Cut-Off Grade .. The key variable is the concentration of the valuable metal in.

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### Cut-off grade estimation - MineWiki, Queen's Mine Design Project Wiki

Feb 7, 2015 . Cut-Off grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be.

### O. Mol and ADS Gillies, Cut-off grade determination for mines .

cutoff grades for iron ore mines producing direct-shipping ore. An iterative approach is . Therefore, the usual definition of cutoff grade for these ores is different.

### Methods for Calculation of Optimal Cutoff Grades in Complex Ore .

The cutoff grade of valuable components delimits the complex ore reserves suitable for efficient mining. The cutoff grade optimization is conducted to maximize.

### First Estimates of Grade and Tonnages and Potential . - Springer

applied to arrive at approximate estimates of grade and tonnage or potential grade and . (1995) examined the history of 53 Circumpacific producing base- and precious metal . Estimation of Volume and Tonnage of Ore Deposits. 2.1.1 .. If a deposit has been systematically drilled on sections, e.g. on lines cut in the bush of.

### OPTIMIZING THE CUT OFF GRADE IN SARCHESHMEH COPPER .

Lane Algorithm is used to determine optimum cut off grade for a mining operation. There may be three parts . The calculation of the cut off grade is done using a modified Lane. Algorithm. . is assumed to be a single metal deposit, the grade.

### Cutoff grade - Wikipedia

Cut-Off grade is the minimum grade required in order for a mineral or metal to be economically . It is important to recognize that the cut-off grade is not simply calculated to a definitive answer. It is in fact a strategic variable that has major.

iron ore cut off grade calculation,

### Predicting the Concentration Characteristics of Itakpe Iron Ore for cut .

ABSTRACT: Concentration characteristics of an ore are very critical to the estimation of cut-off grade of a deposit. A mathematical model that can lead to their.

### Mineral Deposit Value - How to Calculate the Potential Value of a .

Before you can calculate the potential mineral deposit value, you first need to gather some . even analysis page, on which I explained How to Calculate the Cut Off Grade. 4. Convert the Pounds and Ounces to the Corresponding Metal Value.

### Easy profit maximization method for open-pit mining - ScienceDirect

Open-pit. Profit maximization. Ore grade. Stripping ratio. Economic feasibility . ton of metal (or useful substance) out of the plant; M (\$/t) is the cost of mining per ton . Thus, the minimum allowable cut-off grade is provided by the expression: .. in the profit function formula, a direct relationship between profit and cut-off grade.

### Break-even is broken | MINING

Sep 12, 2016 . Also, it is important to note that this definition of the cut-off grade being used for estimation of ore reserves and the planning of the mine (the.

### the importance of dilution factor for open pit mining . - SRK Consulting

Dilution also increases the cut-off grade which in turn reduces the . Financial models calculate revenues by using tonnage and grade of ore .. equation that relates dilution to metal prices then it is useful to use it instead of a single dilution.

### the economic definition of ore - CEO

extraction stage; definition of ore as the extracted material; cut-off grade criterion; economic basis for . cut-off grade lines; calculating the optimum line; formulae for .. probably contain measurable amounts of aluminium, silica, potassium, iron,.

### Nevada Copper Corp - Reserves and Resources - Sat May 12, 2018

The Proven and Probable Mineral Reserves at Pumpkin Hollow, . Copper equivalency calculations are based on \$3.00 per pound for copper, \$1,343 per ounce . The breakeven copper cutoff grades used were 0.156% and 0.159% for the North . Metal prices for the open pit copper, gold and silver assumed were \$3.15/lb,.

### Ore Reserve Estimation Method - 911 Metallurgist

Developed ore usually is calculated first for . The figures show the lengths and values in dollars of samples that are cut at . metal-mining-method-division-of-block.

### Understanding Cut-Off Grade 4 (Tonnage, Grade, and Costs) or .

Feb 17, 2018 . In my First Article, I discussed how calculating cut-off grade is essentially a . minerals or metals by dividing by the price of that mineral or metal.

### Forecasting the grade-tonnage curves and their uncertainty at the .

cut-off and underestimate the corresponding grade for cut-off grades below the . simulate K coregionalized variables (such as metal grades) at a block support, .. Gaussian transformation (step 1), covariance or variogram calculation and.

### Mining production The Optimization and Application of Cut-off .

method is adopted to calculate the equivalent copper grade of associated molybdenum in a copper and molybdenum mine. A underground metal cut-off grade.

### An environmental oriented model for optimum cut off grades in open .

Mar 10, 2008 . Jackling's idea changed the focus of base metal exploration toward ... implies definition for a cut off grade strategy or policy that yields the.

### Characterization of metal grades in a stockpile of an Iron Mine (Case .

Feb 5, 2018 . In any mining operation due to the cut-off grade (economic criteria), materials are ... of Choghart iron rocks were calculated through Equa-.