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design of bond rod mill work index

  • Bond Rod Mill Work Index Equipment & Apparatus Review

    Mar 31, 2016· Commentary on the apparatus of the Bond rod mill Work Index. by Alex Doll December, 2015 [email protected] The Bond “Third Theory” of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period when Bond

  • Testwork: Bond rod mill work index SAGMILLING.COM

    Bond rod mill work index results from Australian laboratories with smooth liners should not be used in the SAGMILLING.COM models. The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed. The test must achieve a steady-state before completion.

  • Rod Mill Work Index Table 911 Metallurgist

    Jun 19, 2015· Here is a list presented in table form of Rod Mill Work Index as tested/presented by SME handbook of mineral processing, N.L Weiss Editor, N.Y. 1985. Rapid Determination of Bond Rod-mill Work Index by Craig Taylor on Scribd

  • Design Of Bond Rod Mill Work Index mayukhportfolio.co.in

    The design of semi-autogenous grinding (SAG) mill based comminution circuits for the treatment bond rod mill work index on at least one sample tested, and. Read more Original document English (PDF 2660kb)

  • 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 ).

  • Bond Tests SGS

    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.

  • effect of bond work index on ball mill design

    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.

  • Rod Mill an overview ScienceDirect Topics

    In Mineral Processing Design and Operations (Second Edition), 2016. 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.

  • Bond Work Index Tests Grinding Solutions Ltd

    The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits. The test requires a minimum of 10kg of sample that has been stage-crushed to 100% passing size of <3.35 mm. Any screen size below 600µm can be used for the testwork depending on your requirements. Bond Rod Mill Grindability Test

  • What Can Go Wrong in Comminution Circuit Design?

    • the bond ball mill work indices determinations gave reasonably reproducible results, • significant variation was observed in the measurement of the bond rod mill work index on at least one sample tested, and • large variations in abrasion index and crushing work index were due to variations in the test method across the laboratories.

  • Testwork: Bond rod mill work index SAGMILLING.COM

    Bond rod mill work index results from Australian laboratories with smooth liners should not be used in the SAGMILLING.COM models. The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed. The test must achieve a steady-state before completion.

  • 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.

  • effect of bond work index on ball mill design

    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.

  • GMSG GUIDELINE: DETERMINING THE BOND EFFICIENCY

    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 mµ (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod µ

  • bond rod mill work index hetdierenbos.nl

    bond index for vertical mill grinding. Bond Index Ball Mill Rod Mill BT 100 XL RETSCH. The grinding jar for the bond index rod mill is x in size and has a waveshaped design at least to kg sample material is required to simulate a closed grinding circuit in a ball or rod mill the rod mill work index rwi is used for particle size determination in a size range from mm down to mm whereas ball mill

  • Bond Rod Index Mills riedel-zeller.de

    Bond Work Index Ball Mill. comparative bond ball mill work index Key Words: Comminution Tests, Bond Work Indices, JKTech, Grinding Mill Design, Bond rod and ball mill work indices are, Investigation into the applicability of Bond Work Index (HGI) being the standard test for vertical spindle mills [7,8], and the Bond Work Index (BWI) for tube

  • Rod Mill an overview ScienceDirect Topics

    In Mineral Processing Design and Operations (Second Edition), 2016. 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.

  • 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

  • A Method of C alculating Autogenous/ Semi-Autogenous

    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

  • AMIT 135: Lesson 8 Rod Mills Mining Mill Operator Training

    Rod mill power is dependent on mill capacity and work index. Mill power increases with: Increasing rod charge; Increasing mill speed; Increasing mill length. Rowland and Kjos (1980) provided an expression to quantify power draw at the pinion shaft per unit mass of rods: P↓M

  • SMC Test® Minerals Processing Comminution Testing SMC

    In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of circuits containing: AG and SAG mills, Ball mills, Rod mills, Crushers, High Pressure Grinding Rolls (HPGR).

  • Laboratory Milling Rod Ball Mills including Bond Rod

    Laboratory Milling Rod Ball Mills including Bond Rod Ball Work Grindability Index. MARC manufactures a wide range of laboratory ball rod mills and automated Bond rod ball mills (with wave liners) to suit most metallurgical laboratory applications.

  • SAGMILLING.COM

    Grinding Circuit Modelling Documentation. This documentation describes the operating and underlying mathematics of the SAGMILLING.COM grinding circuit modelling program. It is intended to be used by the model users who want to operate and understand the functioning of grinding models.

  • Bond Tests SGS Australia

    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.

  • effect of bond work index on ball mill design

    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.

  • 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

  • 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.

  • Ball Mill Design/Power Calculation

    Dec 12, 2016· 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

  • Bond Rod Mill Work Modified mmconcepts.be

    The standard Bond Rod Mill Work Index test procedure is firstly to stage crush the feed to pass 12.7 mm, and size a representative sample. The test then involves a series of batch grinds in a standard Bond rod mill. A Bond rod mill is 0.305m by 0.610m, with wave liners (of a form described by Bond), which runs at 40rpm and tilts as described below.

  • AMIT 135: Lesson 8 Rod Mills Mining Mill Operator Training

    Rod mill power is dependent on mill capacity and work index. Mill power increases with: Increasing rod charge; Increasing mill speed; Increasing mill length. Rowland and Kjos (1980) provided an expression to quantify power draw at the pinion shaft per unit mass of rods: P↓M

  • Mineral Processing Design and Operation ScienceDirect

    Appendix B-2 Bond Work Index Test Procedure for Determination of the Bond Rod Mill Work Index. Pages . 683-685. Select Appendix B-3 Rod Mill Power at Mill Pinionshaft (Horsepower) Mineral Processing Design and Operations is expected to be of use to the design engineers engaged in the design and operation of mineral processing plants and

  • MacPherson Autogenous Grindability Test SGS

    The MacPerson Autogenous Grindability Test determines the MacPherson Correlated Autogenous Work Index*. This can be used in conjunction with the Bond Rod and Ball Mill Work Indices to determine power requirements, and to suggest circuit configurations for autogenous grinding (AG) and semi-autogenous grinding (SAG) circuits.

  • SAGMILLING.COM .:. Articles

    Commentary on the apparatus of the Bond rod mill work index The Bond "Third Theory" of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period when Bond (and his collaborators) were gathering the information to calibrate comminution models.

  • Mineral Processing Crushing Plant design, construction

    Feb 26, 2014· GRINDABILITY TESTS Bond Rod mill work Index • The rod mill work Index is also normally distributed with and average and median of 14.8kWh/t • It is common to observe difference between the ball and rod mill caused by variation in ore hardness • The test has been mainly used for the design of rod mill or primary ball mills. http

  • Bond Rod Index Mills riedel-zeller.de

    Bond Work Index Ball Mill. comparative bond ball mill work index Key Words: Comminution Tests, Bond Work Indices, JKTech, Grinding Mill Design, Bond rod and ball mill work indices are, Investigation into the applicability of Bond Work Index (HGI) being the standard test for vertical spindle mills [7,8], and the Bond Work Index (BWI) for tube

  • Geometallurgy Wikipedia

    The Bond ball mill work index test is thought to be additive because of its units of energy; nevertheless, experimental blending results show a non-additive behavior. [18] The SPI(R) value is known not to be an additive parameter, however errors introduced by block kriging are not thought to be significant .

  • Technical Information SMC Testing

    Technical Information. Information about sample size, calibration, precision and accuracy. The SMC Test® is the most widely-used comminution test in the world for AG & SAG Mills, HPGRs and Crushers. The SMC Test® was developed to provide a range of useful comminution parameters through highly controlled breakage of rock samples.

  • rod mill work index limestone pochiraju.co.in

    Montana Department of Environmental Quality (DEQ) 126tech. Ore was processed in the Iron Rod mill on Highway 41 near Silver Star. Around 1880 the mine began to work deeper deposits which proved refractory and . and physical characteristics in certain beds within a liSKDne formation that 1941 Montana Mine Index, An Alphabetical Index Arranged by Counties, Districts.