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mining loss and dilution calculations for open pit mining

Estimating Mining Factors (Dilution and Ore Loss) in Open

Jan 01, 2007 Dilution and ore loss have an important bearing on the success of open pit mining projects. Their impacts on production costs, revenues and production rate require that they are correctly modelled in the long-term mine plan. The estimation of dilution and ore loss is therefore an essential part of any Ore Reserve estimate or mine schedule.

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(PDF) Controlling operational dilution in open-pit mining

May 21, 2018 When discussing open-pit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cut-off grade calculations, without considering specific...

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Estimation of Open Cut Mining Recovery and Mining Dilution

Estimation of Open Cut Mining Recovery and Mining Dilution By Kent Bannister, ARMIT, FAusIMM (CP), CEO Kent Bannister Pty Ltd, (KBPL) Summary Loss and dilution of Mineral Resource grade occurs during mining activities. Mining Recovery and Mining Dilution estimates are a required consideration in the reporting of Ore Reserves for mineral projects.

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Calculation and Management for Mining Loss and Dilution

Calculation and Management for Mining Loss and Dilution under 3D Visualization Technical Condition. 331 by indirect method, %; C—Geological grade of extracted ore; C. 1—Ore output grade in the mining field. Loss rate and dilution rate shall be calculated by mid-section (stage) and pithead (mining

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Controlling operational dilution in open-pit mining

When discussing open-pit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cut-off grade calculations, without considering specific particularities of the deposit and operation. This paper proposes to quantify the dilution caused by

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Controlling operational dilution in open-pit mining

When discussing open-pit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cut-off grade calculations, without considering specific

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Ore Loss and Dilution -- A Mine Engineering Study

Jul 01, 2018 Background. This document outlines a mine engineering study for the assessment of ore loss and dilution in an open pit operation. Some influences which impact ore loss and dilution

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Controlling operational dilution in open-pit mining

ABSTRACT Dilution and ore loss are important factors that can affect costs and profitability of a mining operation by lowering the quantity of mineral or metal that can be produced from each ton of processed ore. When discussing open-pit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cut-off grade calculations, without considering

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Dilution and ore recovery QueensMineDesignWiki

Figure 2: Mining block in an open pit visualizing internal and external dilution (Ebrahimi, 2013) Primary and Secondary Dilution Estimating dilution prior to mining is a challenging task, demanding the use of an engineer’s best judgement to assess the feasibility and economic value of mining

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Ore Dilution & Recovery in Mining

Recovery 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 open-stope 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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Ore Dilution An Underground Perspective

Mar 11, 2019 In open pit mining, ore losses are not typically given much consideration. However in underground mining they can have a great impact on the project life and economics. Mining method sketches can play a key role in understanding underground dilution and ore losses, even in today’s software driven mining world.

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ore dilution and ore recovery SlideShare

Oct 04, 2019 Ore Dilution & Recovery in Mining Recovery 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 open-stope mines the greatest loss of ore is that tied up in pillars left for

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ECONOMIC ASSESSMENT AND MINE PRODUCTION

capacity, gold price and dilution rate vary. Open-pit mining operations are long-term investments, and therefore, are subject to possible unexpected changes during the mine exploitation stage. This analysis is performed in order to appreciate the possible economic

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Pit Optimization The Effect of SMU Size

Mar 08, 2017 Buzwagi open pit study, in Proceedings Sixth Large Open Pit Mining Conference 2007, Perth, WA, September 2007, pp 119-128 (The AusIMM) Disclaimer: " I

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Benched Coal and Implications for Loss and Dilution

Jan 31, 2018 Precision Mining Forums. Forums > Spry > General Discussion > Im going to calculate the loss and dilution using the calculated field, but for thickness loss still hard to find the best formula. For percentage, still possible. Aditya, Jan 26, 2016 #2. Michael Neilson New Member.

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Estimating Mining Factors Dilution And Ore Loss In Open

2019529Operational mining dilution One possible estimate of this type of dilution for both underground and open pit mines can be obtained by simple geometric calculations. In the case of an open pit mine dilution and ore loss are incorporated in the resource model considering a specific bench height and assuming an angle of repose for the material.

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Appendix E8 Canadian Environmental Assessment Agency

Re: KSM 2012 PFS Loss and dilution calculations 1. Introduction The KSM project is a large open pit copper-gold porphyry deposit. The ore-body is continuous within the cut-off grade shell. The pits will be mined with large shovels and trucks at an ore mining rate of 120,000 tonnes/day feeding the mill.

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Narrow vein minimum dilution case study AMC Consultants

Total dilution is the sum of planned and unplanned dilution (Figure 1.1 and Figure 1.2 ). This method has been selected from numerous alternatives for calculating dilution. The optimum dilution is a trade-off against ore recovery. Given the value of the ore for this case study, recovery was given priority over dilution, with a target recovery

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Reduce ore dilution and loss in open pit mines BMT

Dilution can be a major contributor to poor grade results, and blast movement is a significant cause of dilution and ore loss 1. BMT works with geologists from over 105 open pit operations around the world to accurately measure 3D blast movement so that the ore is

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Ore Loss and Dilution -- A Mine Engineering Study

Jul 01, 2018 Background. This document outlines a mine engineering study for the assessment of ore loss and dilution in an open pit operation. Some influences which impact ore loss and dilution

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THE IMPORTANCE OF DILUTION FACTOR FOR OPEN PIT

Figure 1A mining block in an open pit and different types of dilution MINE VALUE DIMINUTIONS DUE TO DILUTION 1. One of the main consequences of dilution is the reduction of mill feed grade. Lower feed grade means less income. For marginal grade ore, dilution

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Estimating Mining Factors Dilution And Ore Loss In Open

2019529Operational mining dilution One possible estimate of this type of dilution for both underground and open pit mines can be obtained by simple geometric calculations. In the case of an open pit mine dilution and ore loss are incorporated in the resource model considering a specific bench height and assuming an angle of repose for the material.

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ore dilution and ore recovery SlideShare

Oct 04, 2019 Ore Dilution & Recovery in Mining Recovery 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 open-stope mines the greatest loss of ore is that tied up in pillars left for

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Block size selection and its impact on open-pit design and

open-pit design and mine planning by R.M. Jara*, A. Couble*, X. Emery†, E.J. Magri†, and J.M. Ortiz† Synopsis This work evaluates and characterizes the impact of the support size and mining dilution of a block model in the operation and selection of equipment at an open pit mine

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Open-pit mining Wikipedia

Open-pit mining, also known as open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks

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ECONOMIC ASSESSMENT AND MINE PRODUCTION

capacity, gold price and dilution rate vary. Open-pit mining operations are long-term investments, and therefore, are subject to possible unexpected changes during the mine exploitation stage. This analysis is performed in order to appreciate the possible economic

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Stripping ratio Wikipedia

Equations. The equations for stripping ratio are, for coal: ()for metal: ()where volume is typically expressed as m 3 or yd and weight is typically expressed as tonne or ton.. Use. It is common for the stripping ratio to be used as an indicator of economic value for an open pit mine. This is because removal of waste is a cost to the mine whereas mining ore leads to revenue.

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Green Mining Massachusetts Institute of Technology

Although open pit mining (link to mining solution page) contributes about 85% of all mineral mining, it is one of the most environmentally taxing. About 73% of extracted rock goes to waste. Meanwhile, underground mining wastes only 7% of the extracted rock but is more expensive (Hartmann and Mutmansky, 2002).

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Break it Better Mine Blast International Mining

Judges sited the BMM system’s use of innovative technology, ease of application and its potential to significantly reduce ore loss and dilution at any open-pit mine that uses selective excavation. With mines routinely recording a 5 to 20% loss of valuable mineral in every blast, BMMs already save mining companies tens of millions of dollars

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Benched Coal and Implications for Loss and Dilution

Jan 31, 2018 Precision Mining Forums. Forums > Spry > General Discussion > Im going to calculate the loss and dilution using the calculated field, but for thickness loss still hard to find the best formula. For percentage, still possible. Aditya, Jan 26, 2016 #2. Michael Neilson New Member.

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Open Pit Optimisation and Design: A Stepwise Approach*

potential gold resource and indicated that the deposit could be mined by using open pit mining method. This paper calculations o r in some ore loss and dilution. Again, the designed pit

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Brazilian nickel mine reduces ore dilution by 2.2% through

An open-pit mine in Brazil extracts nickel ore; nearby contaminating elements, however, often complicate their material blending accuracy and dilute their ore output. After implementing the DISPATCH® Fleet Management System (FMS) and ProVision® High-Precision Machine Guidance system, the mine reduced their ore dilution by 2.2% by optimizing

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Narrow vein minimum dilution case study AMC Consultants

Total dilution is the sum of planned and unplanned dilution (Figure 1.1 and Figure 1.2 ). This method has been selected from numerous alternatives for calculating dilution. The optimum dilution is a trade-off against ore recovery. Given the value of the ore for this case study, recovery was given priority over dilution, with a target recovery

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