Bauxite Crushing Work Index

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Using Rock Geomechanical Characteristics to …

where W = work input (kWh/t), W i = work index (kWh/t), P = power draw (kW), T = throughput of new feed (t/h), F 80 = 80% passing size of feed (μm), and P 80 = …

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Distribution of impact (crushing) work index for selected …

The Bond Work Index (Wi) is a common technique for the estimation of hardness and energy requirement for comminution using ball mills. However, this technique is time-consuming (close to 5 hours ...

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Bond Work Index

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 …

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sbm/sbm bauxite crushing bond work index crusher …

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(PDF) Alternative Approaches for Determination of Bond Work Index …

Alternative Approaches for Determination of Bond Work Index on Soft and Friable Partially Laterised Khondalite Rocks of Bauxite Mine Waste Materials

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(PDF) Comparison of measures of rock crushability

The crushing work index (CWi), estimated on the basis of the twinpendulum test, has been proposed by Fred Bond and accumulates a long track record in predicting the performance of crushing ...

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[PDF] Alternative Approaches for Determination of Bond Work Index …

PLK (Partially Laterised Khondalite) rock is a general terminology used in this paper for those rocks which are in general associated in bauxite mining such as Partially Altered Khondalite (PAK) rocks, Partially Kaolinised Khondalite (PKK) rocks and Lithomerge. This paper deals with the Bond's work index, Hardgrove index and …

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EFFECT OF PROCESS PARAMETERS ON THE …

Bond-work index of a wide range of bauxites and other alumina-bearing ores. The method of investigation ... These differences have a significant impact on the crushing and grinding of the bauxite-bearing material, and it often becomes necessary to change a grinding mill over from one type of bauxite to another or to increase (or decrease) the ...

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Bauxite Ball Mill Work Index

Table of Bond Work Index by Minerals 19/06/2015 Avg Bond Work Index: kWh/t: kWh/t: kWh/sht: kWh/t: kWh/t: kWh/t: kWh/t: Range: No of Tests: Alumina: 179: 734: ... AS a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, …

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Alternative Approaches for Determination of Bond Work …

Six different types of rock samples associated in bauxite mine waste. 2.1 Bond's Work Index Representative samples were prepared separately by stage crushing to all passing a 6 mesh sieve. The weight of 700 cc sample was placed in the mill. The grinding conditions are given below. a) Gibbsitic

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Comparison studies of friability, Hardgrove index and Bond's work index …

The value of the bond work index of the above samples has shown a variation from 10.8 kWh ton 1 for bauxite (high abrasion value and low compressive strength) to 20.4 kWh ton -1 for granite (low ...

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(PDF) A Methodology to Estimate Ores Work …

A Methodolog y to Estimate Ores Work Index Values, Using Miduk Copper. Mine Sample. M. Noaparast1*, S. Rahmati1, G. Jozanikohan1, S. Aslani1and A. Ghorbani1. 1 School of Mining …

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A new methodology to obtain a corrected Bond ball mill work index …

A "raw" work index is an uncorrected work index computed using Eq. (10) based on laboratory results using a non-standard feed (not the −3.35 mm feed prescribed by Bond). A "raw" work index is used in the correction procedure to predict a "corrected" work index that is adjusted to mimic a standard feed.

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Investigation of grindability of diasporic bauxites in

In recent, the brittleness test/friability value of bauxite, limestone, barite, marble, copper ore, andesite and ulexite [6] [7][8][9] is also suggested to find out the work index of material. The ...

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Bauxite price index

Bauxite is typically extracted from open-pit mines, although in some cases, it can be obtained through underground mining. The choice of mining method depends on the depth and location of the bauxite deposit. Crushing and Screening. After the bauxite is mined, it is crushed and then screened to remove any oversized particles or impurities.

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bauxite crushing bond work index

bauxite crushing bond work index . Alternative Approaches for Determination of Bond Work Index on ... Six different types of rock samples associated in bauxite mine waste. 2.1 Bond's Work Index ... Bond, F.C, (1961) "Crushing and Grinding Calculations" Part I, ...

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A new approach to the calculation of bond work index

The Bond work index (BWI) is a well-known method used when selecting comminution equipment, to evaluate the grinding efficiency and to calculate the required grinding power. ... Crushing and grindability are the parameters that characterize the resistance of raw materials to crushing. There are several procedures for determining …

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Crushing work index Calculation

The Bond crushing work index test (sometimes called the "impact work index" test) is noisy, and the difference you observed is perfectly reasonable. The paper by Angove & Dunne (1997) reports a standard deviation in crushing work index tests across laboratories as 4.5. The laboratory CWi value of 27.4 (metric) is almost within 4.5 units of …

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1 Comparison of measures of rock crushability

The crusher has a feed opening gap of 25 mm, a stroke of 4.9 mm, a cone angle of 44o (in relation to horizontal) and a mantle length of 150 mm. A constant closed-side setting of 7.6 mm was used in ...

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A meaningful expression between bond work index, …

The friability values of barite, marble, limestone and bauxite have been determined and compared with the corresponding Bond work index ( Wi) and …

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[PDF] Alternative Approaches for Determination of …

This paper deals with the Bond's work index, Hardgrove index and Brittleness tests on six typical rock samples and its correlation. As a fast method, the …

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A new approach to the calculation of bond work …

The Bond work index (BWI) is a well-known method used when selecting comminution equipment, to evaluate the grinding efficiency and to calculate the required …

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Procedure for determination of ball Bond work index in …

Based on the defined first-order grinding kinetics in the Bond ball mill, a procedure has been developed for the rapid determination of the work index (Wi) by means of just two grinding tests. The applicability of the proposed abbreviated procedure has been proved on samples of copper and iron ore. The differences between the values of the …

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A new approach to the calculation of bond work index for …

The Bond work index (BWI) is a well-known method used when selecting comminution equipment, to evaluate the grinding efficiency and to calculate the required grinding power. ... Crushing and grindability are the parameters that characterize the resistance of raw materials to crushing. ... Mucsi et al., 2019), and bauxite ores in India …

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Comparison of the measured Bond work index and the Bond work index …

The value of the bond work index of the above samples has shown a variation from 10.8 kWh ton 1 for bauxite (high abrasion value and low compressive strength) to 20.4 kWh ton -1 for granite (low ...

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Equipment Sizing: Crusher or Grinding Mill

Where C represents the impact crushing strength (1) in foot-pounds per inch of thickness and S is the specific gravity, the Work Index is found by Equation 3. Equation 3: Wi = 2.59 C/S. How to Find Impact Crushing Strength From the Work Index. The impact crushing strength (C) is found from the listed Work Index by Equation 4. Equation 4: C …

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sbm/sbm bauxite crushing bond work index.md at main

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Physical Bauxite Processing: Crushing and Grinding …

Crusher Work Index. Percentage of moisture in the feed. Specific Gravity (SG) of the ore in situ. Bulk Density of the blasted or excavated ore. Abrasion Index. …

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Compare and Understand Rod/Ball/Impact …

The three tests are: The Bond ball mill work index (Wi BM, or BWi) conducted from a feed size of approximately 2 mm to a product size on the order of 100 µm. The Bond rod mill work index (Wi RM, or RWi) …

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Minerals | Free Full-Text | Testing of Ore Comminution …

Comminution tests are an important element in the proper design of ore beneficiation plants. In the past, test work has been conducted for particular representative reference samples. Within geometallurgy the entire ore body is explored in order to further identify the variation within the resource and to establish spatial geometallurgical …

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(PDF) Impact work index prediction from continuum …

The traditional Bond work index proposed by F.C. Bond over 60 years ago is still today a useful tool for characterizing material crushability and grindability in the …

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Physical Bauxite Processing: Crushing and Grinding …

Abstract. The most common process step to feed an alumina refinery with bauxite is sizing of the raw bauxite material that is extracted from the mine. The first …

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Table of Bond Work Index by Minerals

Avg Bond Work Index: kWh/t: kWh/t: kWh/sh.t: kWh/t: kWh/t: kWh/t: kWh/t: Range: No of Tests: Alumina: 17.9: 7-34: 6: Andesite: 20.1: 18.3: 20.1: 19.5: Barite: 6.3: 4.7: 5.2: 5.0: 5.8: 4-9: 7: Basalt: 18.9: 17.1: 18.8: 19.0: 19.0: Bauxite: 9.7: 9.5: 8.8: 9.7: 10.0: …