### Using the Bond work index to measure operating comminution

· Austin L.G. Klimpel R.R. and Luckie P.T. 1984 Process Engineering of Size Reduction — Ball Milling SME Chapter 4 p.76. Google Scholar . Bond F.C. 1952

Chat Online### Predicting Mill Feed Specific Energy from Bond Ball Mill

· 1 Predicting Mill Feed Specific Energy from Bond Ball Mill Work Index Tests at Olympic Dam Y Li1 V Liebezeit2 K Ehrig3 M Smith4 B Pewkliang5 and E Macmillan6 1. MAusIMM Senior Geometallurgist BHP Olympic Dam Adelaide South Australia 5000.

Chat Online### Comminution testingJKTechUniversity of Queensland

· A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill(s) and the associated grinding circuit(s). Sample requirements A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm as required for the Bond Ball Mill Work Index test feed.

Chat Online### A Bond Work index mill ball charge and closing screen

· An alternative mill ball charge is proposed that closely approximates Bond s original total ball mass number of balls and ball surface area. Results of 30 Bond Work index tests of six pure materials (calcite magnesite labradorite (feldspar) quartz andalusite and glass) using closing screen apertures (P 1) values of 500 250 125 90 and 63

Chat Online### JK Bond Ball Mill Test

JK Bond Ball Mill Test Since its introduction in the 1960s the Bond Ball Mill Work Index (BBMWi) parameter has been extensively used in predicting ball mill power draw. Use of Work Index Along with comminution circuit design the work index parameter is widely used in tracking mill performance. Due to the age and lack of controls for the test

Chat Online### 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

Chat Online### Bond Work Index TestsGrinding Solutions Ltd

The Bond Ball Mill Work Index (BBWi) test is carried out in a standardised ball mill with a pre-defined media and ore charge. 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.

Chat Online### Using the Bond work index to measure operating comminution

· Austin L.G. Klimpel R.R. and Luckie P.T. 1984 Process Engineering of Size Reduction — Ball Milling SME Chapter 4 p.76. Google Scholar . Bond F.C. 1952

Chat Online### CORRELATION BETWEEN BOND WORK INDEX AND

· 3- STANDARD BOND TESTS The Bond s standard ball mill is used to determine the work index value of differ ent samples. The Bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of 80 passing 100 µm. If the breakage

Chat Online### CORRELATION BETWEEN BOND WORK INDEX AND

· 3- STANDARD BOND TESTS The Bond s standard ball mill is used to determine the work index value of differ ent samples. The Bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of 80 passing 100 µm. If the breakage

Chat Online### Orway Mineral Consultants Canada Ltd. Mississauga ON

· submitted to the Bond ball mill work index test. The number of SAG mill revolutions required to grind the material to a P 80 of 1.7 mm is used to predict AG/SAG specific energy using quation 4. Correction E factors for feed size and pebble ing are applied to

Chat Online### Bond Index Ball Mill / Rod Mill BT 100 XLRETSCH

The Bond Index conforming rod charge consists of 6 rods of 1.25" diameter and 21" length. 2 rods of 1.75" diameter and 21" length. The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave-shaped design. At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.

Chat Online### Predicting Mill Feed Specific Energy from Bond Ball Mill

· 1 Predicting Mill Feed Specific Energy from Bond Ball Mill Work Index Tests at Olympic Dam Y Li1 V Liebezeit2 K Ehrig3 M Smith4 B Pewkliang5 and E Macmillan6 1. MAusIMM Senior Geometallurgist BHP Olympic Dam Adelaide South Australia 5000.

Chat Online### Procedure for determination of ball Bond work index in the

· 1.. IntroductionA Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and modified in 1961 (JKMRC CO. 2006).This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required for grinding and for ball mill

Chat Online### Bond Index Ball Mill / Rod Mill BT 100 XLRETSCH

The Bond Index conforming rod charge consists of 6 rods of 1.25" diameter and 21" length. 2 rods of 1.75" diameter and 21" length. The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave-shaped design. At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.

Chat Online### Bond Work Indexan overview ScienceDirect Topics

The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100 passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm ( mesh) thus determining the ball mill work index (Wi B or BWi). The work index calculations across a narrow size range are conducted using the appropriate laboratory work index determination for the material size of interest or by chaining individual work index calculations using multiple laboratory work index

Chat Online### Technical Note Why is the Bond Ball Mill Grindability Test

· It provides the Bond Ball Mill Work Index which expresses the resistance of a material to ball milling. This Index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required for grinding and for ball mill scale-up. The test has existed for more than 40 years.

Chat Online### Bond Index Ball Mill / Rod Mill BT 100 XLRETSCH

The Bond Index conforming rod charge consists of 6 rods of 1.25" diameter and 21" length. 2 rods of 1.75" diameter and 21" length. The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave-shaped design. At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.

Chat Online### Orway Mineral Consultants Canada Ltd. Mississauga ON

· submitted to the Bond ball mill work index test. The number of SAG mill revolutions required to grind the material to a P 80 of 1.7 mm is used to predict AG/SAG specific energy using quation 4. Correction E factors for feed size and pebble ing are applied to

Chat Online### A Bond Work index mill ball charge and closing screen

· An alternative mill ball charge is proposed that closely approximates Bond s original total ball mass number of balls and ball surface area. Results of 30 Bond Work index tests of six pure materials (calcite magnesite labradorite (feldspar) quartz andalusite and glass) using closing screen apertures (P 1) values of 500 250 125 90 and 63

Chat Online### Using the Bond work index to measure operating comminution

· Austin L.G. Klimpel R.R. and Luckie P.T. 1984 Process Engineering of Size Reduction — Ball Milling SME Chapter 4 p.76. Google Scholar . Bond F.C. 1952

Chat Online### Comminution testingJKTechUniversity of Queensland

· A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill(s) and the associated grinding circuit(s). Sample requirements A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm as required for the Bond Ball Mill Work Index test feed.

Chat Online### Bond Work Index Procedure and Method911 Metallurgist

· This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge. Below describes in general terms the Bond Work Index

Chat Online### 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

Chat Online### Procedure for determination of ball Bond work index in the

The Bond ball mill grindability test is run in a laboratory until a circulating load of 250 is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to ball milling. This happens after 7–10 grinding cycles which shows that the procedure is a lengthy and complex one and is therefore susceptible to

Chat Online### A Bond Work index mill ball charge and closing screen

· An alternative mill ball charge is proposed that closely approximates Bond s original total ball mass number of balls and ball surface area. Results of 30 Bond Work index tests of six pure materials (calcite magnesite labradorite (feldspar) quartz andalusite and glass) using closing screen apertures (P 1) values of 500 250 125 90 and 63

Chat Online### CORRELATION BETWEEN BOND WORK INDEX AND

· 3- STANDARD BOND TESTS The Bond s standard ball mill is used to determine the work index value of differ ent samples. The Bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of 80 passing 100 µm. If the breakage

Chat Online### Bond Work Index Formula-Equation911 Metallurgist

Basic Equations### INTENSIFICATION OF BOND BALL MILL WORK INDEX TEST

· INTENSIFICATION OF BOND BALL MILL WORK INDEX TEST THROUGH VARIOUS METHODS. V. Lvov J. Sishchuk L. Chitalov. Tuesday 12 September 2017 by Libadmin2017. References 17th International Multidisciplinary Scientific GeoConference SGEM 2017 sgem SGEM2017 Conference Proceedings ISBN / ISSN 29 June5 July

Chat Online### Procedure for determination of ball Bond work index in the

· A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and modified in 1961 ( JKMRC CO. 2006 ). This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required for grinding and for ball mill scale-up.

Chat Online### 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

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