Liming Heavy Industry

effect of bond work index on ball mill design

    • effect of bond work index on ball mill design

    effect of bond work index on ball mill design. Insmart bonds ballmill work index is a measure of the resistance of the material to grinding in a ball mill this index is widely used in the industry for comparing the resistance of different materials to ball milling, for estimating the energy required for grinding and for ball mill

    دردشة على الإنترنت Read More
    • Bond Work Index - an overview ScienceDirect Topics

    Ball mill design requires a Bond work index, BWi, for ball mills at the correct passing size; SAG mill design requires an appropriate SAG test, for example, SPI (Chapter 5). Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral ( Chapter 12 ).

    دردشة على الإنترنت Read More
    • Bond Work Index Report Matrix House - 911 Metallurgist

    2017-1-7  in the design of a grinding circuit. The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill. 2. Procedure 2.1. Bond Ball Mill Grindability The sample was crushed to 100% passing 6 mesh (3.35mm), from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill. A feed particle size

    دردشة على الإنترنت Read More
    • CORRELATION BETWEEN BOND WORK INDEX AND

    2014-6-27  ball mill grindability. The test mesh used was 100 mesh P > 14-16 ]. The Bond work index W i was calculated from Equation (2) W i = 44.5/(P 1) 0.23 X (Gbp) 0.82 [10/(P 80) 0,5 0.5± 10/(F 80) ] (2) Where: F 80 is the size in (µm), at which 80 percent of the new feed to ball mill passes,

    دردشة على الإنترنت Read More
    • Ball Mill Design/Power Calculation - 911 Metallurgist

    2015-6-19  The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or

    دردشة على الإنترنت Read More
    • ball mill bond work index - medica-volla.pl

    Price of Ball Mill. The Bond ball mill work index is one of the most commonly used grindability tests in mining, and is often referred to as the Bond work index.The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed.

    دردشة على الإنترنت Read More
    • AMIT 135: Lesson 7 Ball Mills Circuits – Mining Mill ...

    A function of the work index of the material. Bond developed an express ion to quantify mill shaft power based on data from a number of laboratory and industrial ball mills: P↓S = 7.33J↓B Φ↓c (1-0.937J↓B)Ï â†“b LD↑2.3 (1-0.1 / 2↑9 – 10Φ↓C) Ï S = Mill power. D = Mill diameter in meters

    دردشة على الإنترنت Read More
    • Bond Tests SGS

    2021-6-18  Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill.

    دردشة على الإنترنت Read More
    • Comparison of UCS to Bond Work Indices

    FIGURE 8: ROD MILL/BALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS (MPa) 0 0.5 1 1.5 2 WiRM/WiBM (metric) Siddall et al (1996) identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ore’s compentency. Figure 8 plots this ratio versus UCS; no trend is apparent ...

    دردشة على الإنترنت Read More
    • SAGMILLING.COM .:. Articles

    Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a closing mesh

    دردشة على الإنترنت Read More
    • THE EFFECT OF BALL MILL OPERATING PARAMETERS ON

    2021-1-6  new crack tip length produced during breakage. Bond developed the well known Bond work index which is an indicator of a materials resistance to crushing and grinding. Each of these theories was useful in the design and scale up of' ball mill operations, however they told little of the expected size distributions, and most

    دردشة على الإنترنت Read More
    • Application of Operating Work Indices in Autogenous ...

    Ball Mill Wio, BWio 8.6 Circuit Wio, OWio 14.6 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 ...

    دردشة على الإنترنت Read More
    • Work Index Determination for High Pressure Grinding Rolls

    2015-12-16  cycle test akin to the Bond Ball mill work . index determination. The first cycle starts with minus 6 mesh ore removed since it is believed that the fines content can fill most of the voids allowing little room for rock breakage and piston movement. Without adequate piston movement there is little measurable energy used

    دردشة على الإنترنت Read More
    • Ball Mill Design/Power Calculation - LinkedIn

    2016-12-12  The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific ...

    دردشة على الإنترنت Read More
    • COMPARISON OF HPGR - BALL MILL AND HPGR -

    2017-5-26  Bond ball mill work index C Wi Bond crusher work index D HPGR roll diameter (m) E sp net specific energy consumption (kWh/t) F HPGR hydraulic pressing force (kN) F 80 particle size at which 80% of particles pass in feed F SP 2HPGR specific pressing force (N/mm ) L HPGR roll length (m) ṁ or m-dot HPGR specific throughput constant (ts/hm3)

    دردشة على الإنترنت Read More
    • A comparison of the Bond method for sizing wet

    Abstract A comparison is made of the results from a ball mill model simulation with those of the conventional Bond ball mill design method, for a material whose breakage characteristics and Work Index have been determined. In order to perform the simulation, ‘normal’ values were chosen for make-up feed size distribution, mill residence time distribution, ball mix, classifier behaviour, etc.

    دردشة على الإنترنت Read More
    • Predicting the effect of operating and design variables

    2013-4-1  Highlights The mechanistic ball mill model combines DEM, PBM and breakage models. Simulations using the mechanistic ball mill model have been conducted. The effect of design and operating variables has been analyzed. Simulated specific breakage rates were proportional to specific mill

    دردشة على الإنترنت Read More
    • SINGLE STAGE SAG/AG MILLING DESIGN - Orway

    2014-10-1  For a new design, the approach taken by OMC is to seek closure between two modelling methods. Typically power base modelling is utilised. OMC generally use power based methods using either the results of an Autogenous media competency test or JK Drop Weight test in combination with a Bond Ball Work Index result. SPI or SAGDesign

    دردشة على الإنترنت Read More
    • Geometallurgical mapping and mine modelling -

    2014-11-18  Colosa deposit providing information critical for mine/mill design and optimisation. In this study, site-based data incorporating 17,505 multi-element assays, 275 QXRD bulk mineralogy measurements, 15,195 EQUOtip rebound hardness values, 9015 sonic velocity measurements,

    دردشة على الإنترنت Read More
    • Circulating load - SlideShare

    2014-11-18  Test design Slide 12 Main purpose Maximum Capacity Cost low Energy Size Division Less fines Production Bond's work index 13. Test design Slide 13 Effect of circulating load on Bond's work index The follow figures shown variation in the Bond work index with test sieve size as test results[7]. Variation of Bond work index with circulating load. C ...

    دردشة على الإنترنت Read More
    • COMPARISON OF HPGR - BALL MILL AND HPGR -

    2017-5-26  Bond ball mill work index C Wi Bond crusher work index D HPGR roll diameter (m) E sp net specific energy consumption (kWh/t) F HPGR hydraulic pressing force (kN) F 80 particle size at which 80% of particles pass in feed F SP 2HPGR specific pressing force (N/mm ) L HPGR roll length (m) ṁ or m-dot HPGR specific throughput constant (ts/hm3)

    دردشة على الإنترنت Read More
    • A comparison of the Bond method for sizing wet

    Abstract A comparison is made of the results from a ball mill model simulation with those of the conventional Bond ball mill design method, for a material whose breakage characteristics and Work Index have been determined. In order to perform the simulation, ‘normal’ values were chosen for make-up feed size distribution, mill residence time distribution, ball mix, classifier behaviour, etc.

    دردشة على الإنترنت Read More
    • SINGLE STAGE SAG/AG MILLING DESIGN - Orway

    2014-10-1  For a new design, the approach taken by OMC is to seek closure between two modelling methods. Typically power base modelling is utilised. OMC generally use power based methods using either the results of an Autogenous media competency test or JK Drop Weight test in combination with a Bond Ball Work Index result. SPI or SAGDesign

    دردشة على الإنترنت Read More
    • Demo Minerality Minerals processing Software,

    The ore properties passing through an AG/SAG mill often changes unexpectedly. If it does, you need a test that you can do in the lab on site to quickly predict what you can do to prevent losses. In this exercise you can simulate the effect of a different Bond Work Index.

    دردشة على الإنترنت Read More
    • Geometallurgical mapping and mine modelling -

    2014-11-18  Colosa deposit providing information critical for mine/mill design and optimisation. In this study, site-based data incorporating 17,505 multi-element assays, 275 QXRD bulk mineralogy measurements, 15,195 EQUOtip rebound hardness values, 9015 sonic velocity measurements,

    دردشة على الإنترنت Read More
    • AMIT 135: Lesson 7 Ball Mills Circuits – Mining Mill ...

    Mill Type Overview. Three types of mill design are common. The Overflow Discharge mill is best suited for fine grinding to 75 – 106 microns.; The Diaphram or Grate Discharge mill keeps coarse particles within the mill for additional grinding and typically used for grinds to 150 – 250 microns.; The Center-Periphery Discharge mill has feed reporting from both ends and the product discharges ...

    دردشة على الإنترنت Read More
    • Design, Construction and Commissioning of Gold

    2017-1-1  Feed preparation section that includes a (W x L) 2.4 m wide x 4.8 m trash screen, 250 m3 surge tank, a cluster cyclones with 2 x 500 mm diam. Cyclone.• Comminution circuit designed for a bond work index range of 10-12 kwh/tonne. comminution circuit is constituted with 3 ball mills, 1.83 m diam. X 6.71 m Long, 280 kW.•

    دردشة على الإنترنت Read More
    • PROCESS ANALYSIS AND ENERGY EFFICIENCY

    2016-11-23  PROCESS ANALYSIS AND ENERGY EFFICIENCY IMPROVEMENT ON PORTLAND LIMESTONE CEMENT GRINDING CIRCUIT by Sixto Humberto Aguero B.S. (M echanical Engineering), Universidad Nacional Autonoma de Honduras, 1992

    دردشة على الإنترنت Read More
    • An alternative energy–size relationship to that

    Abstract Despite reservations of a number of researchers concerning the applicability of Bond's equation for relating specific energy to the size reduction of rocks, his approach has become an industry standard. Data from a large number of pilot and full-scale autogenous (AG), semi-autogenous (SAG) and ball mill circuits are used to show that Bond's equation does not hold over the particle ...

    دردشة على الإنترنت Read More
    • Mineral processing design and operations : an

    Summary. Mineral Processing Design and Operations: An Introduction, Second Edition, helps further understanding of the various methods commonly used in mineral beneficiation and concentration processes. Application of theory to practice is explained at each stage, helping operators understand associated implications in each unit process.

    دردشة على الإنترنت Read More
<< Previous:Ball Mill Design And Drawing For Ore
>> Next:Crusher For Sale Usa