Characterization and Bond Work Index Determination of …
The Bond work index for 'B' and 'C' type iron ore sample are of 11 and 10 KWh/mt. The variation of BWI of three iron ore sample may be varied during the geological formation of each iron ore sample. The output product of three iron ore sample composed of three different size fractions when ground in Bonds ball mill. Based on the BWI and output ...
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Effect of Geological, Mineralogical Characteristics on …
The bond work index tests have been performed on bauxite samples by standard procedur e. The bond work index of ore indicates how much energy is r equired to grind the ore and it is a very significant property from a plant point of view. The ... and goethite are dominant as iron-bearing minerals. The ollitic, pisolitic
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(PDF) A quick method for Bond work index approximate …
Metals, 2021. It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond standard grindability tests on different critical metal ores (W, Ta), ranging from coarse grinding (rod mills) to fine grinding (ball mills).
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Bond's Work Index Ball Mill for Cement Plant Quality Control
The energy required to grind one ton of an ore from a given feed size to a specified product size is a material property that needs to be determined for different ore deposits like Limestone, Bauxite, Iron Ore, Laterite etc. The Bond's work index has generally been accepted as a measure of the grindability of an ore.
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A new approach to the calculation of bond work index
The ore resistance to grinding and energy consumption can be expressed using the work index and Bond's Third Theory. The Bond Third Theory method is widely used in the design of the grinding cycle, selection of grinding equipment, determination of required grinding power, and performance evaluation of the process.
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(PDF) Work Index of Muro Iron Ore: Comparing Marble and …
The Bond work index (Wit) of the Muro iron ore using marble as the reference ore is calculated as follows: Wir = work index of reference sample (Marble) is 12 kWh/t Pr = 80% passing size of product of ball mill for the reference sample is 219.7 µm Fr = 80% passing size of feed to ball mill for the reference sample is 662.6 µm Pt = 80% passing ...
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Bond Impact Crushing Work Index -Procedure
Sizing a crusher can be done reliably calculated thanks to the Impact/Crushing Work Index and the testwork research done by Fred Chester Bond and his 1952 paper. According to Bond's Third Theory of Comminution, the work/energy input is proportional to the new crack tip length created during particle breakage and equivalent to the work represented by the product …
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Development of process for beneficiation of low-grade …
Low-grade iron ore received from the West Singhbhum area of Jharkhand state in India was used to develop a beneficiation flow sheet to remove alumina (Al2O3 ) and silica (SiO2 ) from the …
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Table of Bond Work Index by Minerals
97 rowsThis 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.
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Bond's Work Index Ball Mill for Mineral Characterisation
The energy required to grind one ton of an ore from a given feed size to a specified product size is a material property that needs to be determined for different ore deposits like Limestone, Bauxite, Iron Ore, Laterite etc. The Bond's work index has generally been accepted as a measure of the grindability of an ore.
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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. Figure 8 plots this ratio versus UCS; no trend is apparent ...
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Bond's Work Index Ball Mill for Mineral …
The Bond's Ball-Mill Work Index is a measure of the resistance of the material to grinding in a ball mill. This Index is widely used in the industry for comparing the resistance of different materials to ball milling, for estimating the energy …
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Physical, Mechanical and Metallurgical Characteristics of …
and bond work index revealed hard and compact nature of the ore. Grain size analysis shows the maximum concentration of the ... iron ore in India is expected to be around 28.52 billion tons of which about 17.88 billion tons of hematite and 10.64 billion tons are of magnetite ore. Furthermore, about 30% low grade including BHJ/BHQ
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Effect of magnetite content on Bond work index and …
Grinding is one of the most costly operations in the mechanical breaking and mining. Determination of the breakage characteristics and preconditioning is important to increase the grinding efficiency. Investigations of the seismic, mechanical and breakage properties of iron oxides are very important parameters for investigating the rock fragmentation by blasting and …
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Correction of Bond Ball Mill Work Index Test for Closing …
The goal of this work is to create an equation to adjust a Bond ball mill work index from one P 80 basis to another. The proposed model consists of two components, the variable coefficient that is determined from a specific work index determination and a fixed exponent determined by a calibration procedure.
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EFFECT OF OPERATING VARIABLES ON BOND'S WORK …
India. The sample was ... work index test conducted on iron ore sample using laboratory ball mill runs at 70 pm and the observed 9.25 ... The Bond work index is a measure of ore resistance to ...
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EFFECT OF OPERATING VARIABLES ON BOND'S WORK …
shape factor to Bond's work index and grindability for a banded magnetite quartzite (BMQ) iron ore material. Keywords: Bond's work index, grindability 1. INTRODUCTION Bond's work index is widely used in energy estimation during ball milling and scaling-up ball mill (Man, 2002) for ore grinding. Generally, all the mineral processing ...
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(PDF) Effect of magnetite content on Bond work index and
The Bond's equation was then used to calculate the work index of the Muro iron ore which was found to be 24.84 kWh/ t when marble was used as reference ore and 27.41 kWh/ t when granite was used as reference ore. The average work index of Muro iron ore...
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Table of Bond Work Index by Minerals | PDF | Iron Ore
Table of Bond Work Index by Minerals - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
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Characterization and Bond Work Index Determination …
Bond work index and the consumed energy [6]. Berry and Bruce (1966) discovered new method for determining the work index, the concept of this method depended on the use of a reference ore of known work index[7]. Iron ore is one of the important industrial minerals used in steel industrials. Magnetite, hematite and goethite are considered the ...
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Bond Work Index Iron Ore India
The Bond's equation was then used to calculate the work index of the Muro iron ore which was found to be 24.84 kWh/ t when marble was used as reference ore and 27.41 kWh/ t when granite was … WhatsApp: +86
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Investigation of iron ores based on the bond grindability test
The present investigation involves the identify the physical properties of three different types of iron ores by using Bond ball mill. The result shows that the maximum Bond …
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Characterization and Bond Work Index Determination of …
The results showed that the ore is hematitic ore with Goethite and quartz minerals. The ore is low grade containing 41.41 % Fe2O3 and 50.88 SiO2. The bond work index test obtained high work index 52.60 kw.h/t and consumed power 11.72 kw.h/t to grind one ton of low grade iron ore and this attributed to the high concentration and hardness of ...
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Characterization and Comminution Studies of Low …
Bond work index studies were carried out for the BHQ and BHJ ores with different product fineness in order to evaluate the energy requirements in fine grinding. A higher Bond work index value was...
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Relationship between the Bond work index (w i ) and the ore …
Download Table | Relationship between the Bond work index (w i ) and the ore hardness designated by Denver from publication: Modelling the specific grinding energy and ball mill scale-up india ...
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Determination Bond Work Index Of Iron Ore
This work index value obtained for the Gyel-Buruku columbite ore sample lies favourably within the work indexes of 3.94 - 10.81 kWh/ton for columbite minerals sighted in the literatures. Effect of magnetite content on Bond work index and …
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Bond Work Index Tests
Bond Rod Mill Grindability Test. GSL can carry out Bond Rod Mill Work Index tests to determine the energy requirements for milling ore in a rod mill. The test requires a minimum of 20kg of -12.5mm material. Closing screen sizes typically range from 4.75mm to 212µm. Abrasion Index Test. The Abrasion Index is a recognised procedure to quantify ...
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EFFECT OF OPERATING VARIABLES ON BOND'S WORK …
The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for...
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Determination of Bond index of Birnin-Gwari Iron Ore in …
The Bond's equation was then used to calculate the work index of the Muro iron ore which was found to be 24.84 kWh/ t when marble was used as reference ore and 27.41 kWh/ t when granite was used ...
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Characterization and Comminution Studies of Low-Grade Indian Iron …
A higher Bond work index value was found for the BHJ ore (15.4 kWh/ton) than for the BHQ ore (12.4 kWh/ton). A decrease in the product particle size was associated with an increase in the work index value. Single-particle breakage experiments were designed by varying feed particle size and input energy.
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