### Table of Bond Work Index by Minerals

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.

### Bond Work Index - an overview | ScienceDirect Topics

Bond impact crushability work index (CWi) (Bond, 1963) results reported for iron ores vary from hard iron ore (17.7 kWh/t) to medium hardness iron ore (11.3 kWh/t) and friable iron ore (6.3 kWh/t) (Table 2.11; Clout et al., 2007).

### bond grinding work index of indian iron ore

bond grinding of indian iron ore - Sourena. bond grinding of indian iron ore. There are forty years of manufacturing history, with three major production bases,over 160 senior RD engineers and 600+ large and medium-sized digital processing equipment, The first-line technicians and professional after-sales service personnel up to 2,300+ and 200+ respectively.Introducing advanced technology and ...

### bond work index iron ore - help4helpngo.com

Bond grinding work index of indian iron ore bond grinding work index of indian iron ore is an internationally renowned manufacturer of mining machinery equipment ai short get does a ball tube mill for coal crushing mill is an important auxiliary equipment for coal and the bond work index … Get Price

### Determination of Bond index of Birnin- Gwari Iron Ore in ...

The study shows that work index of Birnin –Gwari iron ore can be taken as 28.66 Kwh/ston i.e. 20.39 Kwh of energy is required to reduce one ton of Birnin- Gwari iron ore from 80% passing. It is hereby recommended that the value of work index obtained in this study should serve as a

### Bond Work Index Formula-Equation

### Procedure for determination of ball Bond work index in the ...

1/1/2009 · 1. Introduction. 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 ...

### bond index for vertical mill grinding crusher in

Bond Work Index an overview ScienceDirect Topics. The Bond work index is not solely a material constant but is influenced by the grinding conditions For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes He produced a correlation between the mass of ...

### IRON ORE - IBM- Indian Bureau of Mines

IRON ORE SALIENT DATA OF ORE DRESSING INVESTIGATIONS CARRIED OUT DURING 2001-2012 BY ORE DRESSING DIVISION, INDIAN BUREAU OF MINES SR. CONCENTRATE NO. R.I. NO. TITLE OF THE INVESTIGATION ORIGINAL ANALYSIS % MINERALOGY WT% ASSAY% %REC PROCESS ADOPTED The specific surface area of three iron ore samples is as follows Sr. No. Jindal No. S cm2 /gm 1.

### Rapid determination of Bond rod-mill work index by ...

In the current research, a simple, fast and accurate procedure is introduced to find the rod-mill work index based on the conventional Bond work index. The grinding experiments were carried out on four typical samples of iron, copper, manganese and lead–zinc ore with three test-sieves in specified time periods and aimed to shortening the ...

### Evaluation of grinding circuits for iron ore

The Bond theory correlates the work index to the particle breaking. The work index (W i ) is the comminution parameter that expresses the ore resistance to crushing and grinding. The Wi is equivalent to the needed kilowatt hour per short ton, in order to reduce an ore …

### Application of Operating Work Indices in Autogenous ...

The corrected ball mill operating work index using this method is 13.3kWh/t, which is close to the Bond ball mill work index of the ore (13.4kWh/t). The measured transfer size of 726μm produced by the AG/SAG mill corresponds to an equivalent 237μm (T’ 80

### Why the Bond Work Index (hardness) value of two ores ...

Bond work Index value is related with the hardness of the ores and indicate how much energy is required to grind the ore. For example: Two bauxite samples from different geological origin selected ...

### Up-grades and Optimization of Crushing and Grinding Plants

• Reduction of Bond Work Index (BWI) • Reduction of energy consumption of ball mill • Increase of throughput capacity Tertiary HPGR Freeport 7 Cerro Verde I, Copper ore, 108.000 tpd 4 x POLYCOM 24/17 5.0 MW each In operation since: 2006 Cerro Verde II, Copper ore, 240.000 tpd 8 x POLYCOM 24/17 In operation since: 2015

### Abrasion Test | SGS

The equipment consists of a rotating drum into which dry ore samples are placed, with an impact paddle mounted on a centre shaft rotating at a higher speed than the drum. The paddle is made from standard alloy steel hardened to 500 Brinell. The Abrasion Index is determined from the weight loss of the paddle under standard operating conditions.

### METALLURGICAL TEST RESULTS SELENGE IRON ORE PROJECT …

1/21/2015 · Ai-Bond Abrasion Index 0.32 0.17 4 BWi-Bond Ball Mill Work Index (kWh/t) 19.4 19.9 5 Notes: 1. The UCS results indicated that the samples range from strong to very strong. 2. The Bond CWi results indicated the crushability of the samples is medium. 3. The SMC results indicated that grinding of the samples by SAG milling of the samples is hard. 4.

### AMIT 135: Lesson 7 Ball Mills & Circuits – Mining Mill ...

Work Index. Bond estimated the amount of wear in terms of kilograms per kWh based on the abrasion index, A;, i.e., Wet Ball Mill = kg kWh = 0.16(A i-0.015) 0.33; Dry Ball Mill = kg / kWh = 0.023A i 0.5; Replacement Ball Size. Rowland and Kjos proposed the use of their equation for the determination of the initial and replacement media size.

### [PDF] Determination of Work Index for Iperindo Lode Gold ...

The work index of reference ore was used to calculate the work index of the test ore using Gaudin Schuman expression to obtain a work index of 11.92kwh/ton for test ore. This work index value obtained for Iperindo gold ore (test ore) lies favorably within the work index of 8 – 16.5kwh/ton for gold ore sighted in the literature.

### Relationships between comminution J energy and product ...

Table I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS. The concentrate weight recovery was in the order of 50–60%. Furthermore it may be observed that the Bond ball mill work indices for the ore …

### A Canadian Perspective on the use of Biochar in Iron Ore ...

For the tested biochar samples, the Bond work index and settling rates were twice as less than those of coke. Because of high slurry viscosity, dilution to ≤30% solids is required for wet grinding. Heating values similar to coke and lower SiO2 and Al2O3 content are typical.

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