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  • Bond Work Index an overview ScienceDirect Topics

    Calculations involving Bond’s work index are generally divided into steps with a different Wi determination for each size class. The low energy crushing work index laboratory test is conducted on ore specimens larger than 50 mm, determining the crushing work index (Wi C, CWi or IWi (impact work index)). The rod mill work index laboratory test is conducted by grinding an ore sample

  • Bond Impact Crushing Work Index -Procedure and Table of

    The test determines the Bond Impact Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing crushers*. It is also used to determine the required open-side settings (jaw crushers and gyratory crushers) or closed-side settings (cone crushers) for a given product size.P80 = 25400 x Oss x (0.04Wi + 0.40)

  • Crushing work index Calculation Crushing, Screening

    (pinion) power, whereas the measurement of motor power is usually based on motor input power. I have attached a calculation of operating work index that includes the motor efficiency correction, and the result is WiO=22.4 (compared to your 21.5). This correction is minor and can probably be ignored. The Bond crushing work index test (sometimes

  • Testwork: Bond crushing work index SAGMILLING.COM

    The Bond low-energy impact crushing work index (more informally, the Bond crushing work index) is not as common as the Bond ball mill work index, and it is a notoriously noisy test.. The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.

  • coal crusher power calculation brianzamotostoriche.it

    Coal Crusher Power Calculation greenrevolutionin coal crusher formulas mining crusher equipment This page gives you details about coal crusher formulas from SKD Shanghai,China It ( coal crusher formulas)is a global solution for your local needsWhich one is the best basis to use forHow to Calculate the Coal Quantity Used in a Power Plant (A. 【Service Online】 Crushing of coal and calculation

  • Bond Work Index Tests Grinding Solutions Ltd

    Bond Low Energy Impact Test. The Bond Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined. The

  • Bond Tests Mining SGS

    * Bond F. C., “Crushing Tests by Pressure and Impact”, Trans AIME, Vol 169, 1947, pp 58-66. 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.

  • Testwork: Bond crushing work index SAGMILLING.COM

    The Bond low-energy impact crushing work index (more informally, the Bond crushing work index) is not as common as the Bond ball mill work index, and it is a notoriously noisy test.. The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.

  • Bond Work Index Tests Grinding Solutions Ltd

    Bond Low Energy Impact Test. The Bond Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined. The

  • Ball Mill Design/Power Calculation

    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 pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

  • (PDF) A quick method for bond work index approximate

    The Bond work index, Wi, is defined in a Bond ball mill on the samples of standard size − 3.327 + 0 mm. In practice, it is possible to find materials of non-standard size that are finer than 3

  • Impact Crusher Working Principle

    Test Procedures for the Characterization of Crusher Performance. The Bond Impact Work Index method has been an industry standard for the determination of crusher power requirements but was originally developed to ensure, that sufficient power was connected to primary gyratory crushers. In this method, pieces of rock are fractured by trial and

  • Prediction of power consumption and product size in cone

    01.01.1991· Bond proposed that power consumption is a function of feed size, product size and crushing resistance of rock, i.e: 1243 1244 R.A. BEARMAN et al. W = f (Fs0, Ps0, Wi) where:W power consumption (kWh/t), Fs0 eighty percent passing size of feed (/~m), Ps0 eighty percent passing size of product (/~m), Wi Work Index (kWh/t). The basic, parameters proposed by Bond have proved

  • Investigation into the applicability of Bond Work Index

    With increasing quantities of biomass being combusted in coal fired power stations, there is an urgent need to be able to predict the grindability of biomass in existing coal mills, but currently no standard biomass grindability test exists. In this study, the applicability of the Hardgrove Grindability Index (HGI) and Bond Work Index (BWI) as standard grindability tests for biomass were

  • CORRELATION BETWEEN BOND WORK INDEX AND

    the comminution energy based on theoretical approaches, it would be beneficial to examine this relation based on physical concept. In this paper, some Saudi samples of bauxite, kaolinite, granodiorite, magnetite, granite, feldspar and quartz were tested for hardness, abrasion, compressive strength and modulus of elasticity and the bond work index of these samples were estimated. The value of

  • Crushing of coal and calculation of size reduction efficiency.

    25.02.2015· Crushing of coal and calculation of size reduction efficiency. Bond Work Index 𝑤 = 10𝑊𝑖 1 𝑝 − 1 𝑓 W = Power required in KWH to crush 1 short tonne ( 2000 pound) of material Wi is the work index of the material p is the 80 % passing size of the product f is the 80 % passing size of the feed 2/25/2015 6:58:05 AM 23 24. Rosin Rammler Distribution • 𝐹 𝑑 = 100 1