## Bond Work Index - an 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 (325-100 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 ...

## Correction of Bond Ball Mill Work Index Test for Closing ...

2018-12-7 · Ore samples from Copper Mountain and New Afton mines were used for the Bond ball mill work index tests conducted at the University of British Columbia’s CMP laboratory. The first sample is a composite of four Copper Mountain’s geo-unit samples with similar alteration (Albite-Potassic-Argilic) sampled at different pit locations and benches.

## Ball Mill Used in Minerals Processing Plant | Prominer ...

This ball mill is typically designed to grind mineral ores and other materials with different hardness, and it is widely used in different fields, such as ore dressing, building material field, chemical industry, etc. Due to the difference of its slurry discharging method, it is divided to two types: grid type ball mill and overflow type ball mill.

## SMC Test® Minerals Processing Comminution Testing -

1 天前 · 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 ...

## GMSG GUIDELINE: DETERMINING THE BOND

2018-2-20 · Test WI of circuit feed ore = 16.1 kWh/t (The Bond ball mill test Work Index of the ore, whichapplies over the size reduction range of this circuit) W = 3,150 kW / 450 t/h = 7.0 kWh/t . The circuit’s Bond WI Ratio Eff. = 16.1 / 14.4 = 1.12, or 112% . This circuit is performing approximately 12% better than predicted

## Determination Of The Bond Work Index Using An Ordinary ...

The work index of a particular material is determined in the laboratory by conducting the standard Bond grindability test. Bond developed separate tests for the rod mill and the ball mill. The simplified test method described in this paper, which is used at Anaconda Research Center to approximate the work index, is an alternative procedure to ...

## Bond Work Index (BWI) Test — Celtest

2018-10-18 · Celtest have the capability to carry out the Bond Work Index (BWI) Test in accordance with EPRI Report CS3612 : FGD Chemistry and Analytical Method Handbook, Volume 2 . The BWI is used to estimate the required mill power per ton of product (Specific Energy). The specific energy requirement

## Procedure for determination of ball Bond work index in

The grindability of an ore in the process of mineral dressing can be determined by use of the Bond work index (Wi). This index is determined on a laboratory-scale using a Bond ball-mill and by ...

## Testwork: Bond ball mill work index - SAGMILLING.COM

2021-7-5 · 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. The test much achieve a steady-state before completion. Sample Requirements

## Relationships between comminution J energy and

2010-4-21 · Standard Bond ball mill grindability and batch grinding tests were carried out. The Standard Bond ball mill grindability tests were carried out on crushed (-3.35 mm) ore samples (18) using a 106 micron closing screen. Batch grinding tests were conducted on all magnetite concentrates and tails (36 samples total) and in addition three ore samples.

## Ball mills - Outotec - Momentum Group Home

Outotec has designed, manufactured and installed over 8,000 ball and pebble mills all over the world for a wide range of applications. Some of those applications are grate discharge, peripheral discharge, dry grinding, special length to diameter ratio, high temperature milling oprations and more. All equipment adheres to the applicable ...

## A Comparison of Test Procedures for Estimating the

2016-6-8 · Southern African Institute of Mining and Metallurgy 65 ... Both procedures were conducted using a standard Bond test mill. INTRODUCTION The Bond ball work index is widely used in the field of minerals processing as an indicator of ore grindability. The work index is determined by means of a locked-cycle test procedure that typically

## 20150505 Bond Efficiency-GMG-ICE-v1-r04 Determining

2020-9-24 · dard Circuit, assume 2.44 m diameter overflow mills, and use a rod mill F80 of 16,000 µm and a rod mill P80 of 1,000 µm. Note that—in order for no correction factor for ball mill product fineness to apply—the ball mill circuit P80 should be no less than approximately 70 µm (Bond, 1962). This

## Estimates of Electricity Requirements for the Recovery of ...

2011-9-27 · Figure 3. Large electrically -driven ball mills used for grinding ore to a size suitable as feedstock to the ... Estimated electricity requirements for production of ore from vertical crater retreat mining .....78 Table 34. ... the strength of molecular bonds, and technological inefficiencies. ...

## Determination Of The Bond Work Index Using An Ordinary ...

The work index of a particular material is determined in the laboratory by conducting the standard Bond grindability test. Bond developed separate tests for the rod mill and the ball mill. The simplified test method described in this paper, which is used at Anaconda Research Center to approximate the work index, is an alternative procedure to ...

## Bond Work Index (BWI) Test — Celtest

2018-10-18 · Celtest have the capability to carry out the Bond Work Index (BWI) Test in accordance with EPRI Report CS3612 : FGD Chemistry and Analytical Method Handbook, Volume 2 . The BWI is used to estimate the required mill power per ton of product (Specific Energy). The specific energy requirement

## Technical Information - SMC Testing

2021-8-23 · 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.

## CORRELATION BETWEEN BOND WORK INDEX AND

2014-6-27 · 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

## Bond Work Index - Determination of the Bond Work Index

Number of revolutions of the ball mill for the next run and percent circulating load were calculated. The grinding process was repeated until a target 250% ± 2% circulating load was obtained. Figure 1. Grinding Method III. Results and Discussion To determine the Bond work index of the given ore, equation 1 was used.

## Ball Mill&Rod Mill Grinding System Used in Mineral Milling ...

Prominer provides ball mill / rod mill grinding system which is widely used in various types of ores' beneficiation, electricity, cement and chemical industries. It can carry out dry or wet pulverizing and can meet demand for sustainable large-scale production.

## Estimates of Electricity Requirements for the Recovery of ...

2011-9-27 · Figure 3. Large electrically -driven ball mills used for grinding ore to a size suitable as feedstock to the ... Estimated electricity requirements for production of ore from vertical crater retreat mining .....78 Table 34. ... the strength of molecular bonds, and technological inefficiencies. ...

## Fine Grinding - A Refresher - SAGMILLING.COM

and use a single regrind survey (measuring specific energy at the mill pinion E, kWh/t and product P80 size x, µm) to solve for the coefficient. Presented at the annual meeting of the Canadian Mineral Processors, Jan 2017, Ottawa, Canada. Figure 5: Fitting data from Aureus Mining (2012) Bond ball mill tests on gold ore 10 100 10 100 f(x) = 936 ...

## A Comparison of Test Procedures for Estimating the

2016-6-8 · Southern African Institute of Mining and Metallurgy 65 ... Both procedures were conducted using a standard Bond test mill. INTRODUCTION The Bond ball work index is widely used in the field of minerals processing as an indicator of ore grindability. The work index is determined by means of a locked-cycle test procedure that typically

## Cement Ball Mill - JXSC Machine - JXSC Mine Machinery

2019-12-10 · What is the cement ball mill? The cement ball mill is mainly used for grinding the finished products and raw materials of cement plants, and is also suitable for grinding various ore and other grindable materials in industrial and mining enterprises

## ball mill - CITICHL HEAVY INDUSTRIES CO., LTD. - page 1.

China ball mill catalog of Wet Grinding Ball Mill of Energy Saving Machine, Gold Ore Mine Use Overflow Ball Mill Equipment provided by China manufacturer - CITICHL HEAVY INDUSTRIES CO., LTD., page1.

## 20150821 Morrell Method-GMG-ICE-v01-r01 Morrell

2020-9-24 · Wi Bond Work Index Ws Specific energy correction for size distribution (kWh/t) WiBM Bond Ball Mill Test Work Index (kWh/t) 3. KEYWORDS Autogenous Grinding (AG), Ball mill, Bond Work Index (Wi), Comminution circuit, High Pressure Grinding Rolls (HPGRs), Rod mill, Semi-Autogenous Grinding (SAG), Spe-cific energy (W) 4. INTRODUCTION AND BACKGROUND

## Starkey & Associates Inc. - Leaders in Comminution Design

Starkey & Associates Inc. is the name behind a number of the most successful grinding circuit designs in the mining industry today. We are proud to offer grinding circuit designs that can achieve target throughput and grind from day one. Our projects span the globe from Australia, Finland and Russia in the East, to Peru, Chile, Canada and the ...