Influence of some economic parameters on cut-off grade and …

84 Int. Res. J. Geol. Min. Table 2. Values of parameters for cut-off grade estimation of Itakpe deposit. Parameter r, % Y P C, N S R, t/t C M, N W, N C P,, N Value 25 0.48 12,000 4 300 200 280

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Cut-off Grades and Optimising the Strategic Mine Plan

What is cut-off grade? 13 Classification of materials for cut-offs and strategy optimisation 15 Classification of costs for cut-offs and strategy optimisation 17 Applying cut-offs to distinguish ore from waste 20 Planning and operational cut-offs 21 Cut-offs and company goals – or how the junior engineer determines the CEO's bonus 23 Summary 23

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Predicting the Concentration Characteristics of Itakpe Iron Ore for cut

June 2013 Vol. 17 (2) 315-319 Predicting the Concentration Characteristics of Itakpe Iron Ore for cut-off Grade Estimation *1 1 NWOSU JOSEPH IFEANYI; KINGSLEY OKENGWU; ALIMI ADESOJI Department Of Geology, 2Department Of Mathematics and Statistics, University Of Port Harcourt, PMB 5323, Nigeria. ABSTRACT: Concentration characteristics of an ore ...

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Threshold Value of Minerals

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(PDF) Influence of some economic parameters on cut-off grade and ore

Nwosu and Nwankwoala (2012) studied the influence of changes in cost of production and price of iron ore concentrates on the cut-off grade of Itakpe iron ore deposit, North central Nigeria and ...

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Understanding cut-off grade in mining (part 1)

The "cut-off grade" is the minimum grade that makes mining profitable. Anything below this grade is considered waste. How is the cut-off grade calculated? To estimate how much of a resource can be mined profitably, we need to calculate a cut-off grade. Ore with a grade below this cut-off cannot be included in the reserve estimate. The cut-off ...

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Influence of some economic parameters on cut-off grade and …

Influence of some economic parameters on cut-off grade and ore reserve determination at Itakpe iron ore deposit, North central Nigeria Nwosu J.I and *Nwankwoala H.O ... their tonnage and grade at Itakpe iron ore deposit EAST PIT Ore Layers Ore Layer Index Grade % Tonnage mt Northern N 1 34.19 15.49 North ern N 2 37.88 31.58 Northern N 3 35.01 5 ...

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Mining 101: Cut-off grades (and their role on in mining …

The concept of 'cut-off grade' is a critical decision-making tool for mining companies, an invisible line that dictates the fate of mineral deposits, determining whether they are deemed worthy of the significant investment …

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(PDF) A review of cut-off grade policy models for open …

This paper presents a comprehensive overview of the available literature on cut-off grade policy models and suggests possible areas of future research.

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Cut-off Grade Calculator

Making the Grade. A mineral resource must have a reasonable prospect for eventual economic extraction ('RPEEE'). A cut-off grade ('COG') provides some information regarding the overlap between grade and economics. A COG …

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Cutoff Grades & Life of Mine (LOM)

Cutoff grades determine the minimum grade or quality of ore that must be extracted and processed to make a mining operation economically viable. By setting the cutoff grade appropriately, mining companies can ensure that they …

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Cut-Off Grades

Cut-off grades determine material as ore or waste based on mineral concentration. Optimize destinations and enhance cut-off grades with MiningMath.

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Cut Off Grade Calculation Optimization

Cutoff grade is defined as the grade that is normally used to discriminate between ore and waste within a given orebody. Although the definition of cutoff 911 Metallurgist is a trusted resource for practical insights, solutions, and support in mineral processing engineering, helping industry professionals succeed with proven expertise. | Cut ...

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Understanding cut-off grade in mining (part 1)

The "cut-off grade" is the minimum grade that makes mining profitable. Anything below this grade is considered waste. How is the cut-off grade calculated? To estimate how much of a resource …

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Scandium: Ore deposits, the pivotal role of magmatic enrichment …

Therefore, magmatic rocks with average Sc concentrations >60 ppm can be regarded as Sc deposits. The Sc cut-off grades of laterites vary from 33 ppm in the Shazi deposit, China (Nie et al., 2018a), 70 ppm in the Lucknow deposit, Australia, to 300 ppm in the Syerston-Flemington deposit, Australia (Hoatson et al., 2011).

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Specifications Guide Global Iron Ore

The global Iron Ore specifications guide contains the primary specifications and methodologies for Platts Iron Ore global catalogue of price assessments. The various sections of this guide are designed to give S&P Global Commodity Insights subscribers as much detail as possible about a wide range of methodology and specification issues.

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Cutoff Grades & Life of Mine (LOM)

Cutoff grades determine the minimum grade or quality of ore that must be extracted and processed to make a mining operation economically viable. By setting the cutoff grade appropriately, mining companies can ensure that they are extracting and processing ore at an attractive margin and leveraging the net present value of the site.

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Cut-off Grade Calculator

A cut-off grade ('COG') provides some information regarding the overlap between grade and economics. A COG represents the minimum grade needed to pay-off most* of the costs of mining and processing that material. With this tool, I help …

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Optimum cut-off grade's calculation in open pit mines with regard …

The common problem found in the mining company is how to determine the cut-off grade for the classification of ore and waste. The cut-off grade will greatly affect the revenues and costs of the ...

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Cut-Off Grades For Mineral Resource Reporting: Going The Extra …

A cut-off grade (COG) is an industry-accepted standard expression used to determine what part of a mineral deposit to include in a mineral resource estimate (MRE). For MRE reporting, COGs tend to be rounded down to ensure that material of no economic significance is excluded from the resource. ... Ore operating cost reflects multiple ...

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Cut-off Grades Explained

Materials with a grade above the cut-off are considered "ore," while those below are deemed "waste." The cut-off grade is determined by various factors, including mining costs, processing costs, metal prices, and the recovery rate.

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Predicting the Concentration Characteristics of Itakpe Iron …

Itakpe iron ore deposit is a magnetite-hematite mineralization consisting of 14 ore layers of economic value ranging in grade predominantly from ... onward utilization in cut-off grade assessment ...

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Cutoff grade optimization based on maximizing net present value …

Cutoff grade optimization in Gol Gohar iron mine No. 1 using the provided computer model is discussed. Input data is the same as mine data, ... The economic definition of ore: Cut-off grades in theory and practice. Mining Journal Books, …

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Mineral Resources and Ore Reserves Estimation | SpringerLink

Ore grade and cut-off grade play pivotal roles in mineral resource estimation and mining economics. The cut-off grade delineates the boundary between waste and ore. Ore grade refers to the concentration of valuable minerals within an orebody, typically expressed as a percentage or a specific unit of weight (e.g., grams per ton).

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How to Calculate the Cut-Off Grade

On this page I exemplify how you can calculate the mineral's cut off grade, which is my method to conduct a mineral project's break even analysis.

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Cut-Off Grade Determination of Iron Ore Mines Considering …

Cutoff grade is one of the most important factors in production mine planning and design of open pit mines. Considering the indicators of sustainable development in the calculation of Cutoff grade leads to the sustainable design of the mine and is the biggest opportunity to reduce the adverse effects of mining activities. Until recently, only economic indicators were considered in the ...

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Understanding Cut-Off Grade Calculation in Mining Operations

Furkan Kasa, PhD. MBA, CEng, MIMMM Hello Sir, Please help me solve this problem Question 1 Calculate the cut-off-grade for Kobesh mine having a total reserve of 15 000 000 t of gold ore to be ...

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Predicting the Concentration Characteristics of Itakpe Iron …

onward utilization in cut-off grade assessment. Hence, various experts have attempted to establish if there is a functional relationship between ore grade (feed grade) and concentration characteristics like recovery, yield, and tailings grade which are essential variables in cut – off grade estimation. If such

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The effects of cut-off grade and block sizes on the net …

an iron ore deposit. Moore Theresa Malisa A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial ... considered as waste or ore. If the cut-off grade is too high, more material will be discarded as waste while a lower cut-off grade increases the entire mining

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(PDF) Characterization of Metal Grades in a Stockpile of an Iron …

According to the Grade-Tonnage curve of the stockpiles, it has shown that with the high demand of raw materials and reducing the cut-off grade of Fe, both stockpiles can be considered as a new source of Fe, for instance in the cut-off 56% of Fe, there is 18000 tonnes with the average grade of Fe (64.50%) The Mining-Geology-Petroleum Engineering ...

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