define dilution of ore in stopping in mining

define dilution of ore in stopping in mining

  • Mining methods slideshare

    Application of different mining methods in massive vein deposits Ore stability Low ore stability High ore stability Ore value Low ore value High ore value Block caving Cut and fill Sublevel caving Large open stoping with cemented fill Undercut and fill Large open stoping with lost pillars

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  • Estimation of Open Cut Mining Recovery and Mining Dilution

    Mining Recovery is usually a percentage estimate of insitu ore recovered after mining has taken place. It is frequently described as mining loss which is economic mineralisation that has been lost during the mining activity. Mining Dilution is the percentage of material added to the insitu ore during mining.

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  • ct.ufrgs.br

    Underground Mining Methods and Applications Production Headframe Hans Hamrin* 1.1 INTRODUCTION Ore is an economic concept. It is defined as a concentration of minerals that can be exploited and turned into a saleable product to generate a financially acceptable profit under existing economic conditions. The definition of ore calls for

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  • (PDF) Sublevel Stoping Underground Mining Methods

    Sublevel Stoping Underground Mining Methods. Dilution = (sterile to n Join ResearchGate to discover and stay up to date with the latest research from leading experts in Mining and many

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  • Sub level open stoping QueensMineDesignWiki

    Since this mining method requires that the ore be blasted on multiple occasions, it is recommended that the ore have a high compressive strength and few planes of weakness such as joints, bedding planes or faults. Advantages . Dilution may occur but 100% of the ore is usually recovered from the stope.

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  • Autonomous operations are looking to be the future of the

    of autonomous equipment in mining is at mines where their operating environment is able to exploit high precision posi tioning like the flat, open iron ore mine of the Pilbara in the NW of Western Australia. Here most pits are long, relatively flat, or have been purposely designed to allow the use of au tonomous mining

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  • Glossary of Mining Terminology Glace Bay

    Bed A separate stratum of coal or other natural deposit such as clay, rock or shale. Bench A horizontal section of coal seam included between parting of coal or shale. Bituminous Coal A coal that contains 15% to 20% volatile matter. It is dark brown to black in colour and burns with a smoky flame.

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  • The Block Cave Mining Method UK Essays

    This report is advocated towards a layman in block caving in view of getting an impression about the block cave mining method. Chapter One Introduction 1.1 Block Caving. Block caving is an underground mining method applicable to the extraction of low grade, massive ore bodies with the following characteristics

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  • Coal mining

    Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine a pit, and the

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  • A new diversion drawing technique for controlling ore loss

    The industrial test results of the No. 5 panel of the main mining area in Chambishi copper mine showed that the ore recovery rate increased from 69.85% to 76.11%, while the ore dilution rate decreased from 32.61% to 28.7%. 24 On site industrial tests clearly showed that the diversion drawing technology was

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  • Kimberlite country rock contact delineation at Finsch

    The better definition of contact positions also adds value to tunnel stopping bad mining practices, and failure to define the contact are the reasons for means of reducing ore losses and minimizing dilution. Dilution varies between 15% and 40% and ore

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  • Glossary of Mining Terms Coal Education

    Dilution The contamination of ore with barren wall rock in stopping. Dip The inclination of a geologic structure (bed, vein, fault, etc.) from the horizontal; dip is always measured downwards at right angles to

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  • Stoping mining Britannica

    Stoping. Stoping, in mining engineering, the opening of large underground rooms, or stopes, by the excavation of ore. Stoping is practiced in underground mineral mining when the surrounding rock is strong enough to permit the drilling, blasting, and removal of ore without caving. In mines where the

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  • Alimak Production Mining, Manroc Developments Inc.

    Raise mining is a quot;longholequot; method of bulk mining tabular narrow vein ore bodies. The main ore access is gained by driving a raise up dip along the centre of the stope hangingwall, rather than from over and under cuts driven along strike, as is done with regular open stoping.

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  • Comprehensive Mining Software Solutions

    Comprehensive Mining Software Solutions Colors Cyan, Magenta, Yellow, Black. minimum thickness of ore and waste, dilution above and below, recovery, density and weathered depth ore blocks Pit with Benches amp; Ramps n Define grades with a specific cost amount

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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

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

    resources to ore reserves.8,9 Dilutionthis term refers to the waste that is not segregated from the ore during the operation, that is, the waste material that is mixed with ore and sent to the processing plant, which decreases the mineral grade and increases its tonnage.10,11 Such dilution mainly depends on the equipment used in the mining

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  • Decision support system of unplanned dilution and ore loss

    Decision support system of unplanned dilution and ore loss in underground stoping operations using a neuro fuzzy system. Metallurgical Engineering, Western Australian School of Mines, Curtin University, WA, Australia Erkan Topal Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin

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  • DETERMINATION OF OPTIMAL PARAMETERS FOR SUBLEVEL

    ore dilution exceeds 50%. At that point, drawing was supposed to stop, but, in order to provide more points for graphical illustra tion of relation between the ore dilution and ore recovery, the ore drawing went a little further. Interpretation of results was created us ing tables and graphs. Each table, for each

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  • taiyuan mining machinery import wonderpark.cz

    Taiyuan Mining Machinery Group , China Company List. Taiyuan Mining Machlnery Group Co.,Ltd is the state owned large sized and first grade key backbone enterprise engaging in manufacture of heavy duty machinery products and coal mining machinery equipment in Chinathe national awarded top leve measurement unlt and owns the independent right for foreign trade.It covers an area of 880,000 square

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  • A long hole stoping system for mining narrow platinum reefs

    tional mining due to lower dilution Shaft head costs expected to be 15% lower than conventional mining Zero grade dilution planned at 65 mm mining width. Planned stoping grade of 6.0 g/t Sizes of development ends are crucial to make this system profitable (drill raise @ 1.6h x 3.2w m; holing

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  • Stripping Ratios What are They and Why are They Important?

    Calculating stripping ratios. At their most basic, strip ratios can be calculated by dividing overburden thickness by ore thickness. For example, an overburden thickness of 100 meters and an ore thickness of 50 meters would yield a strip ratio of 21. That means mining 1 cubic meter of ore would require

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  • Managing Ore Loss and Dilution for Blast Optimisation

    ore loss and dilution, resulting in the development of tools to measure and model blast movement. Using these state of the art tools, JKTech has developed a scientific methodology to minimise ore loss and dilution in open pit mines.

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  • Thickening Resource Book

    Thickening Resource Book. T H I C K E N I N G 222 2 Table of Contents dilution effect. The floc particles agglomerate and settle to the surface of the thickening pulp, and continue and stopping the drive. Drives may be mechanical or hydraulic. Rake Lifting Mechanism These should be provided when abnormal thickener operation is probable

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  • Description of mining methods (step by step) nvp pgf

    Description of mining methods (step by step) Apollo Gold Corporation Diamond Hill mine (U.S.A) Stope mining from top to bottom. Ore removal by ore chutes located in the middle of the stope. Attached Documents. The mine is able to maintain an acceptable dilution even if mining narrow stopes leave longs holes open on several levels. The

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  • Underground mining (hard rock)

    The ore is mined in horizontal or slightly inclined slices, and then filled with waste rock, sand or tailings. Either fill option may be consolidated with concrete or left unconsolidated. Cut and fill mining is an expensive but selective method, with the advantages of low ore loss and dilution.

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  • Shrinkage Stope Mining, Mining Methods, Mining Techniques

    The method may be used for ore mining in shrinkage stopes, for rising, and for underground construction projects where excavations of considerable vertical height may be needed, like ore and waste bins, crusher rooms, penstocks and tailrace tunnels. As blasted rock takes up more volume than rock in situe, some of the broken material must be

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  • DEALING WITH MINING PROJECTS UNCERTAINTIES IN

    minimum stopping widths, choice of stopping method, dilution factors, geotechnical and hydrological parameters, mining recovery factors and metallurgical recovery. Economic uncertainties represent one of the most crucial sources of uncertainty and, if left unchecked, may have a critical impact on the evaluation of the mining project.

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  • Glossary of Mining Terms rocksandminerals

    Glossary of Mining Terminology. A. Dilution The contamination of ore with barren wall rock in stoping. Dip The inclination of a geologic structure (bed, vein, fault, etc.) from the horizontal; dip is always measured downwards at right angles to the strike.

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  • (PDF) Open Stope Mining in Canada ResearchGate

    PDF Open stope mining is the most common mining method employed in underground, hard rock mines in Canada. It is characterised by relatively small, single lift stopes (20,000 to 100,000 tonnes

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  • Stoping definition of stoping by The Free Dictionary

    Define stoping. stoping synonyms, stoping pronunciation, stoping translation, English dictionary definition of stoping. n. An excavation in the form of steps made by the mining of ore from steeply inclined or vertical veins. tr.v. stoped , stop183;ing , stopes To remove from or

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  • Stope sequencing QueensMineDesignWiki

    A 12 stope extraction sequence with a discontinuous strike slot approach is depicted in Figure 3. This method uses primary, secondary, and tertiary stopes designed with a stress shadowing and orebody abutment retreat to manage induced stresses with the assumption that the major principal stress is normal to the long axis of the deposit in question .

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  • Case Study Minimising Dilution and Orica Mining Services

    1. A 5.5% reduction in longhole mining costs 2. Lower mining costs from less stope dilution 3. A reduction in drilling costs from expanded patterns 4. Removing the need for a second ANFO charge up wagon These savings are significant. Additional benefits from the utilisation of bulk Subtek Velcro emulsion

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  • Compare Stoping Methods of Mining

    Square set stoping is a flexible method; it can be accommodated to very irregular ore bodies, large or small, and permits following and mining offshoots of ore with minimum dilution and loss of ore. Waste can be sorted out and left in the gob.

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  • Lecture 4 Underground Mining SlideShare

    Nov 02, 20110183;32;Underground mining, Underground mining methods. Lecture 4 Underground Mining 1. Hassan Z. Harraz hharraz2006@yahoo 2010 2011 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

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