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mining loss and dilution calculations for open pit mining

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  •  2012 Americas School of Mines

    2012 Americas School of Mines

    Open pit mining Mining Methods 5 Open pit mines are used to exploit low grade, shallow ore bodies. However, some pits are quite deep – about 1 km. The mining rate is greater than 20,000 tonnes per day (tpd) but is usually much greater. Some pits operate at a rate of more than 100,000 tpd Open pit mining results in two waste streams: waste rock which contains no .

  • ore dilution and ore recovery - LinkedIn SlideShare

    ore dilution and ore recovery - LinkedIn SlideShare

    04/10/2019· With a simple calculation it is possible to compare mine economics for two cases of mining operation, with dilution and without dilution. For this example there will be 21.0% decrease in NPV (at 10% discount) and an 8.6% decrease in IRR after 10% dilution. @Hassan Harraz 2019 Ore Dilution and Ore Recovery 2 29. Table 1 shows the effect of 10% dilution on ore grade for a .

  • AN APPROACH ON DILUTION AND ORE RECOVERY/ LOSS ...

    AN APPROACH ON DILUTION AND ORE RECOVERY/ LOSS ...

    AN APPROACH ON DILUTION AND ORE RECOVERY/ LOSS CALCULATIONS IN MINERAL RESERVE ESTIMATIONS AT THE CAYELI MINE, TURKEY Soyer, Nihat M. Sc., Department of Mining Engineering Supervisor: Prof. Dr. Tevfik Güyagüler December 2006, 102 Pages Dilution and ore recovery/loss have an important role in calculation of mineral reserves. Each percent ...

  • How Mining Companies Improve Production Efficiencies .

    How Mining Companies Improve Production Efficiencies .

    Some dilution is inevitable and mine plans include a dilution factor in ore recovery calculations. Poor quality control results in an increase in dilution, which affects mill throughput, can impac

  • 9 Practical Solutions to Mining Problems

    9 Practical Solutions to Mining Problems

    17th International Mining Congress and Exhibition of Turkey- IMCET2001, ©2001, ... Coal Enterprises'' (TKJ) Elbistan-B open-pit lignite mine. Later, Erdem (1996), Erdem & Çelebi (1998) and Erdem et al. (1999) introduced design guidelines for the pullback stripping method for a flat-lying coal seam on one and two benches, respectively. Duran (2000) improved upon me above .

  • Controlling operational dilution in open-pit mining ...

    Controlling operational dilution in open-pit mining ...

    21/05/2018· 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 particularities of the deposit and operation. This paper proposes to quantify the dilution caused by operational inefficiency through identifying the ore blocks that are a part of the short .

  • Ore Dilution & Recovery in Mining

    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 .

  • Methodology of coal losses calculation at open pit mining ...

    Methodology of coal losses calculation at open pit mining ...

    Methodology of coal losses calculation at open pit mining for complex geological conditions - review Oleg Litvin 1, Maxim Tyulenev 2, ... To calculate the loss in the preparation of the project, it is difficult to produce a comprehensive assessment of geological conditions. Therefore, it is necessary to develop specific recommendations or algorithm to easily assess the impact on the loss .

  • Performance Measurement of Mining Equipments by Utilizing OEE

    Performance Measurement of Mining Equipments by Utilizing OEE

    the most of the Open Pit Mines. OEE calculation for Shovel Shovels are used in open pit mining as primary loading equipment. Their performance and production controls the total output of operation. Therefore any production loss in shovel causes an increase in total production cost. Therefore the trend for those equipments require that the manager consider every possibility to .

  • Mining-Calculator - YouTube

    Mining-Calculator - YouTube

    02/06/2014· The "Mining Calculator" is a software for mine optimization. It includes equipment selection and dimensioning as well as cost calculation and determination of C02 emissions for discontinuous and ...

  • MINING DILUTION AND MINERAL LOSSES AN UNDERGROUND .

    MINING DILUTION AND MINERAL LOSSES AN UNDERGROUND .

    29/07/2018· MINING DILUTION AND MINERAL LOSSES AN UNDERGROUND OPERATOR´S PERSPECTIVE Paul Tim Whillans 1142 Rose Street Vancouver, Canada V5L 4K8 [email protected] Tel: +1 (604) Paul Tim Whillans Principal Whillans Mine Studies Ltd. As presented at the following conferences: - Mining Tech Santiago Chile - .

  • Ore Loss and Dilution -- A Mine Engineering Study

    Ore Loss and Dilution -- A Mine Engineering Study

    Minimum mining width – Often, ore loss and dilution studies are based on the concept of a selective mining unit or SMU. Generally however, the size of .

  • Selection of practical bench height in open pit mining ...

    Selection of practical bench height in open pit mining ...

    Dilution versus bench height (Bozorgebrahimi et al., 2005). Figure 3. Large block of the simple sequencing method. In open pit mining, factors that can affect the degree of dilution can be regarded as deposit-related or mine-related. The bench height is a mine-related parameter that can be studied using a simple geometrical model of the deposit. By changing this parameter .

  • calculating dilution factor in mining

    calculating dilution factor in mining

    the importance of dilution factor for open pit mining ... - SRK Consulting . Mining dilution is one of the most important factors affecting the economy of mining ... While we do our best to identify and calculate all the other cost items of a... More details » Get Price. Calculation and Management for Mining Loss and Dilution under 3D ... May 5, 2011 ... Keywords: Calculation .

  • Minimizing Mining Dilution, Ore Loss, and ...

    Minimizing Mining Dilution, Ore Loss, and ...

    Minimizing Mining Dilution, Ore Loss, and Misclassification by Accounting for Blast Movement in South American Porphyry-Skarn and Manto Copper .

  • Strategies for Minimising and Predicting Dilution in ...

    Strategies for Minimising and Predicting Dilution in ...

    dilution. Therefore, mining method selection is relevant to minimising narrow vein dilution. The economic performance of narrow vein mines is particularly sensitive to depth of overbreak or slough. Using typical narrow vein dilution costs of $25/tonne; mining direct operating costs (mucking and trucking $7/tonne) and milling ($18/tonne), and assuming 500 000 tonnes per .

  • Mining Dilution Variable Versus Fixed Factor

    Mining Dilution Variable Versus Fixed Factor

    Mining Dilution: Examples of mining Projects. Study Level Dilution Notes. PFS 0% As blocks are 25x25x15 dilution is assumed to be 0% as as SMU is smaller FS 1% PEA 5% 20x20x10 model used PFS 5% Model is 5x5x5 FS 7.1% SMU is 12x12x6, dilution determined using Barrick internal model Tech Rep 8% Tech Rep 10% Tech Rep 15.5% 11.7% From Block Size, 3 ...

  • Minimizing dilution in open stope mining with a focus on ...

    Minimizing dilution in open stope mining with a focus on ...

    Minimizing dilution in open stope mining with a focus on stope design and narrow vein longhole blasting: Creator: Clark, Lyndon Michael: Date Issued: 1998: Description: This thesis presents the results of three years of research which focused on minimizing dilution in open stope mining. The research encompassed both stope design and narrow vein longhole blasting. A new empirical .

  • Break-even is broken - AusIMM Bulletin</h3><p>However, many are ''sub-grading'', which involves mining and treating grades that are substantially lower than the cash maximisation grade and using higher-grade ores to subsidise loss-making ore tonnages. The authors suggest that mining with a properly engineered mine plan at the grade that delivers the company''s goals is ''right grading ...</p><h3>Dilution and Losses in Underground Mining | Mining ...

    Break-even is broken - AusIMM Bulletin

    However, many are ''sub-grading'', which involves mining and treating grades that are substantially lower than the cash maximisation grade and using higher-grade ores to subsidise loss-making ore tonnages. The authors suggest that mining with a properly engineered mine plan at the grade that delivers the company''s goals is ''right grading ...

    Dilution and Losses in Underground Mining | Mining ...

    Assuming reconciliation is possible, the resulting calculations of dilution and recovery may reflect on the accuracy of the Mineral Resource and Ore Reserve estimates rather than on actual mining performance. As in open pit mining there are several levels of reconciliation that may be of interest as performance measures:

  • Open Pit, Quarry, Shaft Mining Difference

    Open Pit, Quarry, Shaft Mining Difference

    Open pit mining for iron ore replaced shaft mining very early on in ... 11 Apr 2013 EXAMPLE OF OPEN PIT IRON MINE understand is the difference between the old style ... Read more. Difference Between Open Pit Mine Quarry Underground Mine ... difference between open pit mine quarry underground mine shafts ... » what is the difference between open pit mining and underground mining » open pit .

  • calculating dilution factor in mining

    calculating dilution factor in mining

    the importance of dilution factor for open pit mining ... - SRK Consulting . Mining dilution is one of the most important factors affecting the economy of mining ... While we do our best to identify and calculate all the other cost items of a... More details » Get Price. Calculation and Management for Mining Loss and Dilution under 3D ... May 5, 2011 ... Keywords: Calculation .

  • The evaluation of haulage truck size effects on open pit ...

    The evaluation of haulage truck size effects on open pit ...

    This thesis investigates the effects of equipment size selection on the economics of open pit mining. The work presented, illustrates the importance of considering equipment selection in the wider context of the entire mine. A methodology is presented for evaluating the various variables that are affected by equipment size, Equipment Size Sensitive Variables, (ESSV) that will aid .

  • Methodology of coal losses calculation at open pit mining ...

    Methodology of coal losses calculation at open pit mining ...

    Methodology of coal losses calculation at open pit mining for complex geological conditions - review. Oleg Litvin, Maxim Tyulenev, Sergey Zhironkin, Sergey Prokopenko. Division for Digital Technologies ; Research output: Contribution to journal › Review article. 14 Citations (Scopus) Abstract. At present, industry documents and methods of coal losses regulation take into account only mining ...