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Break Even Analysis

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 Get price



operations and the relationship between cut-off grade and NPV provides a means by which cut-off grades can be optimized For the purposes of a discounted cash flow analysis Lane defined value as a function of two factors namely the size of the remaining ore reserve (S) and the rate of extraction (q) Intuitively these two factors will informGet price


Figure 1 BHP Billiton Iron Ore Tenement holding showing

BHP Billiton Iron Ore Tenement holding showing locations of Jinayri and Marillana - 2 - Figure 2 Some cut-off grades have been adjusted to align with revised product strategy Cut-off grades used to estimate resources Mt Newman JV 50%Fe for Whaleback deposit Get price


Overview of steel and iron market 2017

Deloitte CIS thanks for your interest in Overview of steel and iron market research which is conducted on a regular basis The global metals market is primarily driven by three critical factors the Chinese market USD exchange rates and oil prices This triad is as important as ever The demand from China has recovered due toGet price



Mining is the gathering skill upon which the skills Alchemy Jewelry and Forging are founded Ores are mined from nodes which can be smelted at a furnace to create crafting materials If you have the ores the level necessary to use them and the proper materials for the item you are attemptingGet price


Weighted Average Calculator

Weighted average calculator online and calculation Find the weighted average of class grades (with equal weight) 70 70 80 80 80 90 Since the weight of all grades are equal we can calculate these grades with simple average or we can cound how many times each grade Get price


Differences Between Black Pipe Cast Iron Pipe

However cast iron pipe's thick walls act as an insulator against the noise of water/waste traveling along the pipeline Cast iron pipe is cut with a device called a snap cutter which generally has to be rented from DIY rental houses where ABS is simply cut with a handsaw circular saw or miter saw Get price


Iron ore pelletizing systems

Iron ore can be upgraded to a higher iron ore content through beneficiation This process generates iron ore filter cake which needs to be pelletized to be used in the steel making process Also during the processing of high grade iron ores which don't need beneficiated fines which are generated can be pelletized and used instead of being disposed of Get price


Cut Off Grade Calculation Optimization

Table of ContentsTraditional Cutoff Grades in Open Pit MiningHeuristic Cutoff Grade Optimization TechniquesOptimizing The Cutoff Grades By Lane's ApproachAlgorithm for Determining Optimum Cutoff Grades Cutoff grade is defined as the grade that is normally used to discriminate between ore and waste within a given orebody Although the Get price


Part Four Competitiveness

Part Four Competitiveness Ore Grade The costs of mining and processing copper are more closely related to the gross tonnage of the change the cut-off grade (the lowest grade that is mined and treated) These are very important decisions in the operation of a mining project Get price


Calculation of the Net Smelter Return (NSR) of a Mine

Abstract As a rule a mine produces concentrates In rare cases it mines rich ores which can be shipped directly In some cases price quotations for concentrates and ores are available i e iron ore tungsten and antimony concentrates or "yellow cake" 3 U 3 O 8 the end product of uranium mines Get price


Effect of stope construction parameters on ore dilution in

cut-off grade are linked to all mining and milling stages Several research efforts were made in the past to help better understand the causes of ore dilution and some of these led to the development of empirical formulae for the estimation of ore dilution in different mining environments Get price


Bioline International Official Site (site up

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 quick prediction will significantly enhance ore reserve estimation mine planning and the economy of the mining venture as a whole Get price


A guide to the language of steel – ArcelorMittal

A producer that converts iron ore into semi-finished or finished steel products Traditionally this process required coke ovens blast furnaces steelmaking furnaces and rolling mills A growing number of integrated mills use the direct reduction process to produce sponge iron without coke ovens and blast furnaces Iron oreGet price


Ball Consumption In Iron Ore Grinding energy consumption t of wet grinding of iron ore testfood iron ore ball mill grinding media calculation Ball mills are used for wet grinding iron ore gold/copper ore nickel ore and other Jun 14 2017 Energy saving Get Price And Support Online Grinding media quality assurance for the Get price


Our Operations

Our Operations Overview of operations As one of the world's largest iron ore producers Fortescue owns and operates integrated operations spanning two iron ore mine hubs the five-berth Herb Elliott Port and Judith Street Harbour towage facility in Port Hedland and the fastest heavy haul railway in Get price


Chapter 9 Economic and engineering geology key

Ore The rock containing valuable metal(s) that is economic to mine Resource A useful and valuable natural material Mineral resources Can be metallic and non-metallic or industrial minerals Reserves The amount of the resource that can be extracted at a profit using existing technology Get price



9-8-2019cut-off grade Lowest grade or assay value of ore in a deposit that will recover mining costs the cut-off grade determines the workable tonnage of an ore Encyclopedia gives you the ability to cite reference entries and articles according to common styles from the Modern Language AssociationGet price


Gold Assaying and Gold Grades

11-5-2019The cut-off grade is a dynamic number and adjustments routinely happen most commonly in response to a change in the market price of a metal The larger the average grade is in relation to the cut-off grade the more profitable the mine is Properties whose cut-off grade is higher than its average project grade will not see production unless Get price



Tonnage-cutoff model and average grade-cutoff model for a single ore deposit Qingfei Wanga b Jun Denga b ⁎ Jie Zhaoa b Huan Liua b Li Wana c Liqiang Yanga b a State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 ChinaGet price


Oxidation of food grade oils

Oxidation of food grade oils Editor Dr Matt Miller The PV test is a good way to measure the amount of primary oxidation products in fresh oils Oils with significant levels of peroxides may still be odourless if secondary oxidation has not begun If oxidation is more advanced the PV may be relatively low but the oil will be obviously rancid Get price



Open-pit mining is to be considered one of the most dangerous sectors in the industrial world It causes significant effects to miners health as well as damage to the ecological land Open-pit mining causes changes to vegetation soil and bedrock which ultimately contributes to changes in surface hydrology groundwater levels and flow paths Get price


iron ore cut off grade calculation

Optimum cut-off grade's calculation in open pit Cut-off grade – a criterion used to discriminate ore from waste – has direct impact on mineable reserves and average grade of the materials that must be processed More Beneficiating low grade iron ore in India - MMMM) Understanding Low Grade Iron Ore Most deposits of iron ore in Get price


Labrador Iron Mines Holdings Limited Iron Ore

Labrador Iron Mines expects its lump composition to account for approximately one-quarter of ore produced Low-Grade Ore Low-grade ore is a term applied to iron-rich rocks with cut-off grades in the range of 25-30% Fe It was the main supply of iron ore for many centuries of the World's early history of production of iron Get price


Mining Valuation Lesson Cut

That means that the higher the cut-off grade there is even a possibility that the NPV would be negative as the mine life and recoverable ore becomes too small The important factor is selecting the cut-off grade that yields the highest NPV In our table that means selecting the 2 5 grams per tonne cut-off grade Get price


Math Calculators and Converters

Engineering Cut Off Calculator Final Grade Calculator Medical Cut Off Calculation for Biomaths More Date Day Date Age Calculators Date Basic Operations Date Day Converters Festivity Other Date Calculators More Differentiation Addition Rule Chain Rule Derivatives Calculator Derivative Calculator Get price


What Does the Grade of a Gold Mine Refer To?

13-8-2015The highest-grade gold mine in the world is the Fire Creek mine in Battle Mountain Nev according to 2015 data With a gold ore density of 44 1 g/t Fire Creek falls high above Macassa the second highest grade mine at 22 2 g/t which is located in Kirkland Lake Ontario Get price


2012 Americas School of Mines

next The revenue from the ore must pay for the cost of excavating the waste from the pushback and for excavating the ore But the slope cannot exceed 45˚ and remain stable so at some point it becomes impossible and/or uneconomic to continue mining The slopes of a deep pit are cut into a series of locally steep slopes ( 450) each about 5‐15Get price


Grade Tonnage Curve How Far Can It Be Relied Upon?

Grade Tonnage Curve How Far Can It Be Relied Upon? FRANCISCO SILVA 1 and AMLCAR SOARES 2 face of variations of the cut-off grade significant changes in the geometry can occur due to variations of the cutoff grade The grade tonnage curve calculation which is based on a block model counts every singleGet price


relationship between copper ore grade and operating costs

operations and the relationship between cut-off grade and NPV provides a means by which each ton of ore in the same way as any other costs So we More Some observations on copper yields and ore grades Some observations on copper yields and ore impact of declining ore grades on the cost of and at the relationship between copper ore Get price


Optimum cut

25-11-2014Cut-off grade – a criterion used to discriminate ore from waste – has direct impact on mineable reserves and average grade of the materials that must be processed 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 Lane's Get price

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