The result of this testing indicates that the design of the value ball BICO mill of 10.786kWhr/t mill delivers is the root cause of these higher and in less more testing variable reproducible of the BWi same results mean material. than BWi the It value is BICO postulated of ball 12.238kWhr/t mill. that As the well, differing versus the Sepor ...

Introducing the JK Bond Ball Lite Test (JK BBL) - JKTech

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 …

Ball Mill Bond Work Index: WiB = 12.1 kWh/st Rod Mill Bond Work Index: WiR = 10.5 kWh/st Impact Bond Impact Index: WiI = 7.9 kWh/st SAG Power ... MEI Online - Bond Work Index An abreviated test that did not reach steady state as a Bond Work Index does would only be ... mill sizing etc.

JKTech's testing, equipment and laboratory services ensure globally reliable results. JKTech Pty Ltd P: +61 73365 5842 ... • JK Bond Ball Mill Test • Bond Ball Mill Work Index Test • Bond Rod Mill Work Index Test • Point Load Test • Equotip esTt • HPGR esTt • Flotation esTting

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However, if the sample is to be prepared by cutting with a diamond saw (cut-core method) as little as 5kg is normally sufficient. Also remember that the products from the SMC Test® can be re-used for Bond ball work index testing, the SMC Test® being effectively used as a feed preparation step for the Bond ball work index test.

Here is the old Allis-Chalmers Bond Work Index Grindability Test Procedure. The standard feed is prepared by stage crushing to all passing a 6 mesh sieve, but finer feed can be used when necessary. It is screen analyzed and packed by shaking in a 1000-cc graduated cylinder, and the weight of 700 cc is placed in the mill and ground …

The FC Bond Work Index Test Ball Mill was designed by F. C. Bond for use in determining the Bond Index, a measure of grindability and power required for grinding applications. The FC Bond Mills are used in laboratories throughout the world. ... according to the type of grind desired. The FC Bond ball Mill comes with table stand (pictured ...

The reason for this variation in ball mill work index is because the ore at Mt. Milligan has an intrinsic exponent of –0.45 in the 100 µm to 200 µm size range, not the –0.50 exponent empirically measured by F. Bond. The work index increase between 100 µm and 76 µm is due to a porphyritic grain size that causes a spike in energy

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 • …

You need a two-stage solution, first stage open-circuit mill and then second stage closed-circuit mill. First stage, will be broken into two parts as well, you use a Bond rod mill work index for the coarse component of the ore (+2.1 mm) and the Bond ball mill work index for the fine component (-2.1 mm).

JK Bond Ball Mill Test JKTech JK Bond Ball Mill Tes. · tracking mill ... GLOBALLY RELIABLE DETERMINATION OF BOND BALL MILL WORK INDEX JK Bond Ball Mill Test The JKBBM test was developed at the Julius Kruttschnitt Mineral Research Centre JKMRC#8230; WhatsApp: +86 ; PDF Uses and Benefits of …

An improved method using less mass compared to the Bond Ball Mill Work Index test. JKTech Pty Ltd P: +61 73365 5842 E: [email protected] CRICOS Provider . Charlar en Línea; JKTech - Mining Technology. JK Bond Ball Mill Test Our flotation ore characterisation test is the JKTech Floatability Index (JKFi) Test. JK Drop Weight Test …

The ability to simulate the Bond work index test also allows examination of truncated ball mill feed size distributions on the work index. For grinding circuits where the feed to a ball mill is sent directly to the classifier and the cyclone underflow feeds the ball mill (see Figure 3.10), a question arises as to whether this practice will alter the ball mill work index …

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Keywords: grindability; comminution; Bond work index 1. Introduction Determining the Bond index using the Fred Bond method [1,2] is considered the state‐of‐the‐art methodology for mill calculations and a critical process parameter in raw materials selection and grinding process control.

P80 = 25400 x Css x 7Ecc x (0.02Wi + 0.70) / (7Ecc – 2Css) Where Oss = Open-side setting in inches. Css = Closed-side settings in inches. Ecc = Eccentric throw in inches. P80 = Aperture through which 80% of the product will pass. Wi = Work Index. The impact apparatus consists of two pendulum-mounted hammers, mounted on two bicycle …

Calculate a Mill's Operating Work Index. Use this online formula to calculate a Ball Mill, Rod Mill or SAG Mill Operating Work Index. Based on Fred Bond's work you can estimate the energy used into your grinding circuit. This is the most accurate and informative method, but much of the data necessary for its application is not yet …

Abstract and Figures. The purpose of this research was to statistically evaluate comparative Bond Work Index, BWi, determinations using two different commercial ball mill testing apparatus. These ...

GTEK Bond Ball Mill Work Index is used for determine the grindability of materials, and help to choose the most suitable type and model of grinding equipment. Ask For Quote Donwload Find more details in the options below.

an average work index of 15.5 kWh/t. A very broad range of results was received, characterising the 'standard ore' from medium to very hard. A disappointing result …

Description. XMGQΦ305 Grinding Bond Ball (Rod) Mill is mainly applied for testing the grinding work index of the material of every kinds of ores, slag, etc. Under the specific rotation speed for dry grinding, then screening the products, weighing, repeat operation several times, getting the grinding work index kWh/t.

Comparative assessment of the Bond Ball Mill Work Index tests L.S. Chitalov 1, V .V . Lvov 1 1 Saint-Petersburg Mining University, Saint-Petersburg, Russia, e-mail: [email protected]

This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 'around the world sample'. You can find the SG of each mineral samples on the other table. Source 1. Source 2. Source 3. Source 3. Source 4.

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SMC Data Processing. The results from conducting the SMC Test® are used to determine the drop-weight index (DWi) which is a measure of the strength of the rock as well as the comminution indices Mia, Mih and Mic. In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of ...

A Bond Ball Mill, 12" x 12" of fabricated construction comes with electric motor and gear reducer drive, digital counter, jogging button to provide positioning of drum for loading and unloading, emergency stop button, 44 ½ lb ball charge, stand and receiving pan. Perform Fred C. Bond's grindability tests with this standard BWI test ball mill.

from JKTech in Australia and was sent around the world to compare the Bond Grindability Work Indices (Britvic, Steadman, Williams, 2016, Usman, 2015). The Bond Work Test was run in

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 passing 6 mesh (3.35mm), from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

standard Bond crushing, and rod mill work indices, abrasion indices and by Dawson for Bond Ball Mill Work Index tests using crushed feed, and Standard Autogenous Grinding Design (SAGDesign) Tests, patented by Outokumpu. (See reference 8 below). The comparison of these results gives context to how the various measurements relate to each

JK Bond Ball Mill Test; Our flotation ore characterisation test is the JKTech Floatability Index (JKFi) Test. JK Drop Weight Test and SMC Tests® are licenced to 48 …

Section snippets Grinding kinetics in the Bond ball mill. Tests of grinding kinetics in the Bond ball mill (Fig. 1, Fig. 2) has shown that over a shorter grinding period, the process follows the law of first order kinetics R = R 0 e-kt where R = test-sieve oversize at the time (t); R 0 = test sieve at the beginning of grinding (t = 0); k: grinding rate …

A comparison of the wear/energy values resulting from the Bond abrasion test with actual mill data for five ores and 11 mills is shown in Figure 1. 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0 5 10 15 20 Bond Work Index Wi] Wear Bond Rate Wear Real Rate Au oxide Au sulphide Au ore Cu ore Pb/Zn ore Figure 1: Wear/Energy results for the cases tested

Comparative assessment of the Bond Ball Mill Work Index tests. Authors: Leonid Chitalov. Saint Petersburg Mining University. Vladislav Valerevich Lvov. Saint …

The goal of this work is to create an equation to adjust a Bond ball mill work index from one P80 basis to another. The proposed model consists of two components, the variable coefficient that is ...