mining loss and dilution calculations for open pit mining

  • Stripping Ratios: What are They and Why are They Important ...

    Stripping Ratios: What are They and Why are They Important? ... or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material ...

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  • Dilution and ore recovery - QueensMineDesignWiki

    calculating dilution factor in mining. Products List. ... (Dilution and Ore Loss) in Open Pit Mines ... using examples from large open pit stratiform copper and magnetite deposits. ... Basic Principles of Ore Reserve Calculation. Sample Weighting. Mining Dilution. Calculation by Polygons. More details » Get Price. The Northern Miner Glossary ...

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  • 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, Sergey Zhironkin 3 and Sergey Prokopenko 4 At present, industry documents and methods of coal losses regulation take into account only mining in simple conditions: the coal

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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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  • Block Size Selection And Its Impact On Open-Pit Design And ...

    Concerning the ore reserves and their mining sequence, defined in the pit optimization and analysis process, the same curves prove that the loss of selectivity is more accentuated. Second, the importance of the block boundary dilution produced during mining operations is assessed.

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  • Reconciliation principles for the mining industry: Mining ...

    By using the factors it is possible to calculate a monetary value on improvements in the accuracy of orebody knowledge, selectivity and the effects of dilution and ore loss. Reconciliation should be an implicit part of the mining process, and reconciliation targets …

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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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  • 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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  • Mine Planning Software - Pit Optimiser for Open Pit Mine

    In order to arrive at a solution in a realistic time frame for large block models, most of the existing mine planning software for open pit mining (pit optimisers) use super-blocking to drastically reduce total block counts. Consequently, this materially affects the solution accuracy which has …

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  • Stripping ratio - Wikipedia

    In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of ore. For example, a 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock.

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  • Cost Models of Theoretical Mining Operations | CostMine

    This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day. Rock characteristics for both ore and waste are typical of those of granite or porphyritic material. Operating conditions, wage scales, and unit prices are typical for western U.S. mining operations. All costs listed are in 2012 US$.

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  • Benched Coal and Implications for Loss and Dilution ...

     · Benched Coal and Implications for Loss and Dilution Calculations. ... (ie not all of the waste covering coal is removed before coal mining takes place). ... Interesting topic. Im going to calculate the loss and dilution using the calculated field, but for thickness loss …

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  • Resource Model Dilution and Ore Loss: A Change of Support ...

    The sources of dilution and ore loss in mining operations are many. This study focuses on the assessment of the ore dilution and loss in a Mineral Resource model, specifically, the proportion and average grade of blocks that are misclassified as ore and waste, which can be referred to as Resource Model Ore Dilution and Model Ore Loss, respectively.

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  • Performance Measurement of Mining Equipments by Utilizing …

    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.

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  • 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, Sergey Zhironkin 3 and Sergey Prokopenko 4 At present, industry documents and methods of coal losses regulation take into account only mining in simple conditions: the coal

    [24/7 online ]
  • Maximising Ore Recovery and Minimising Dilution in Open ...

    The open pit mine comprises volcanogenic-style gold deposits, with most mineralization occurring in sulphide ... Calculate potential losses from dilution and ore loss that would have occurred if blast movement was not accurately ... Ore loss and dilution resulting from …

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  • Ore Grade Reconciliation Techniques – A Review

    The essence of ore grade reconciliation is to identify, analyse and manage variance between planned and actual results in a way that highlights opportunities. A consistent record of poor reconciliation is an indication that this variance has not been adequately managed. This would inevitably result in significant economic impact on mining companies.

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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.

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  • Mine Planning Software - Pit Optimiser for Open Pit Mine

    In order to arrive at a solution in a realistic time frame for large block models, most of the existing mine planning software for open pit mining (pit optimisers) use super-blocking to drastically reduce total block counts. Consequently, this materially affects the solution accuracy which has …

    [24/7 online ]
  • Mining Cost Estimating Software - CostMine

    Sherpa for Surface Mines is an innovative, engineering-based software system that helps you estimate the costs of open-pit mining. Sherpa combines engineering-based estimating procedures with cost data from CostMine's Mining Cost Service to determine the pertinent capital and operating costs associated with surface development and mining.

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

    ABSTRACTDilution 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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  • 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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  • Reserves and Resources – 12/31/18

    Open pit mineral reserves of the West Mine Crown Pillar were estimated in January 2019 by Hecla Quebec and Mine Development Associates based on $1225 gold and a US$/CAN$ exchange rate of 1.3. Hecla Mining Company, West Mine Crown Pillar Deposit, Open Pit Mining Study - 2018 Janu, by Mine Development Associates, Thomas L. Dyer, P.E.

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  • Calculation and Management for Mining Loss and Dilution ...

    The mining loss rate and dilution rate are the key indicators for the mining technology and management level of mining enterprises. Aiming at the practical problems such as the large workload but inaccurate data of the traditional loss and dilution calculation method, this thesis introduces the operating principle and process of calculating the loss rate and dilution rate at the mining fields ...

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  • Mining Dilution | SpringerLink

     · Abstract. Dilution is a critical issue that affects many aspects in mining. It is generally due to the geometric characteristics of the ore body, the mining operation, the characteristics of geologic contacts, and the limitations of the mining equipment to recover material to …

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  • 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.

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  • Calculation and Management for Mining Loss and Dilution ...

    Calculating unit of mining loss rate and dilution rate is usually the loss and dilution during the whole mining process from mining preparation and cutting of mining field, stoping, filling, ore drawing until transporting ore to pithead (or opencast mining field). As for underground mine, the loss rate and dilution

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  • Mining Dilution | SpringerLink

     · Abstract. Dilution is a critical issue that affects many aspects in mining. It is generally due to the geometric characteristics of the ore body, the mining operation, the characteristics of geologic contacts, and the limitations of the mining equipment to recover material to …

    [24/7 online ]
  • 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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  • Maximising Ore Recovery and Minimising Dilution in Open ...

    The open pit mine comprises volcanogenic-style gold deposits, with most mineralization occurring in sulphide ... Calculate potential losses from dilution and ore loss that would have occurred if blast movement was not accurately ... Ore loss and dilution resulting from …

    [24/7 online ]
  • 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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  • Stripping ratio - Wikipedia

    In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of ore. For example, a 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock.

    [24/7 online ]
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