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Bond rod mill work index

Apr 08, 2020

The rod mill work index laboratory test is conducted by grinding an ore sample prepared to 80% passing 12.7 mm ( inch, the original test being developed in imperial units) to a product size of approximately 1 mm (in the original and still the standard, 14 mesh; see Chapter 4 for definition of mesh), thus determining the rod mill work index

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  • Bond Work Index Rod Mill | Titan Process Equipment Ltd
    Bond Work Index Rod Mill | Titan Process Equipment Ltd

    The Titan Bond Work Index Rod Mill is one-piece cast construction with integral wave liners of a form described by Bond. This mill is used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating production-size rod mills

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  • Comparison of UCS to Bond Work Indices
    Comparison of UCS to Bond Work Indices

    FIGURE 5: BOND ROD MILL WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS (MPa) 5 10 15 20 25 30 35 WiRM (metric) The lack of fit observed relating the crushing Work Index was expected to carry over to the other Bond Work Indices. Figure 5 displays the plot of rod mill Work Index (Wi RM) versus UCS. These

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  • Rod Mill - an overview | ScienceDirect Topics
    Rod Mill - an overview | ScienceDirect Topics

    3.4.7. Bond rod mill standard testStandard conditions for determining the work index of rod mills under laboratory conditions are: mill size = 305 mm (internal diameter) 610 mm (internal length) with wave type lining. material dry mineral. quantity − 1250 cm 3 (tapped down to give a reproducible bulk density)

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  • (PDF) Determination of work index in a common laboratory mill
    (PDF) Determination of work index in a common laboratory mill

    An analysis of the results shows a direct relationship between the Bond work index and the Denver work index when the Bond test is defined adequately to the Denver lab mill. Read more Article

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  • 20150505 Bond Efficiency-GMG-ICE-v1-r04 Determining
    20150505 Bond Efficiency-GMG-ICE-v1-r04 Determining

    WiRM Bond Rod Mill Test Work Index (kWh/t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at the drive pinions. 3.KEYWORDS Work Index, Work Index Efficiency, Bond Work Index testing 4.INTRODUCTION AND BACKGROUND

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  • bond index of grinding
    bond index of grinding

    Bond Rod Mill Grindability Test. Grinding Solutions can carry out Bond Rod Mill Work Index tests to determine the energy requirements for milling ore in a rod mill. The test requires a minimum of 20kg of 12.5mm material. Closing screen sizes typically range from 4.75mm to 212 m. Abrasion Index Test

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  • Simulating the Bond rod mill grindability test | Request PDF
    Simulating the Bond rod mill grindability test | Request PDF

    The model was validated for four materials, showing that it can predict the Bond rod mill work index with deviations below 10%. Requiring only 1.5–3kg of sample, the procedure is demonstrated to

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  • Application of Operating Work Indices in Autogenous
    Application of Operating Work Indices in Autogenous

    Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect on profitability

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  • Comminution testing - JKTech - University of Queensland
    Comminution testing - JKTech - University of Queensland

    Jul 30, 2020 Measuring ore grindability in rod mills. The Bond Rod Mill Work Index is a measure of the resistance of the material to grinding in a rod mill. It can be used to determine the grinding power required for a given throughput of material under rod mill grinding conditions

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  • GMSG GUIDELINE: DETERMINING THE BOND
    GMSG GUIDELINE: DETERMINING THE BOND

    Bond Test WI’s (kWh/t): Rod Mill: Ball Mill: 9.5 kWh/t.8 9 kWh/t . Bond Standard Circuit Work Index: Assume the rod mill Work Index of 9.5 applies from the actual rod mill feed sizeof 19,300 m (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod

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  • Essa® Bond Test-Work Equipment – Mineral Stats
    Essa® Bond Test-Work Equipment – Mineral Stats

    Essa Bond Test-Work Equipment. Internationally accepted mineral metallurgical standard test procedures to determine the physical properties of ores include the Bond ball mill work index and the Bond rod mill work index. These are empirical indices determined by close circuit grindability tests developed by F.C.Bond in the mid 1930’s

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  • Error analysis for bond work index determinations part 2
    Error analysis for bond work index determinations part 2

    In this paper, systematic errors encountered in a rod mill Bond Work Index determination related to the weight and size distribution of the sample are first estimated experimentally. The first type is shown to be relatively small, whereas the second can be as high as 3 kWh/t when the

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  • A Method of C alculating Autogenous/ Semi
    A Method of C alculating Autogenous/ Semi

    No 1 rod mill/ball mill circuit was operating very effi ciently when comparing the combined operating work indices for both mills with the rod mill and ball mill laboratory work indices. Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an extra amount of

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  • Testwork: Bond rod mill work index
    Testwork: Bond rod mill work index

    Rod mill work index is used in the SAGMILLING.COM Bond/Barratt specific energy consumption model. The work index is used to calculate the energy requirement to grind rocks in the medium size range, from 10 mm - 20 mm down to about 2 mm

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  • Rapid determination of Bond rod-mill work index by
    Rapid determination of Bond rod-mill work index by

    Jan 01, 2013 Abstract. Generally, Bond work index is a common method for selecting comminution equipment as well as estimation of grinding efficiency and calculating required power. In the current research, a simple, fast and accurate procedure is introduced to find the rod-mill work index based on the conventional Bond work index

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