### Crushing work index Calculation Crushing, Screening

As Alex told you: The crushing work index you calculated appears mostly correct. The only correction factor that might affect the calculation is to correct for the efficiency of the motor -- the work index is based on motor output (pinion) power, whereas the measurement of motor power is usually based on motor input power.

### Bond Impact Crushing Work Index -Procedure and Table of

Apr 19, 2018 P80 = 25400 x Oss x (0.04Wi + 0.40) P80 = 25400 x Css x 7Ecc x (0.02Wi + 0.70) / (7Ecc 2Css) Where Oss = Open-side setting in inches. Css = Closed-side settings in inches. Ecc = Eccentric throw in inches. P80 = Aperture through which 80% of the product will pass. Wi = Work Index.

### (PDF) A quick method for bond work index approximate value

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 industrial

### How To Calculate Crusher Work Index

Crusher operating work asindex calculation atmandu. crusher work index tests crusher work index tests operating crusher is within the normal range of variation for this calculation crushing crusher work index wordreference forums 20181031 crusher work r wikipediaeach crusher is designed to work with a certain maximum size of raw material and often delivers its output to a screening machine

### USING THE SMC TEST® TO PREDICT COMMINUTION CIRCUIT

= 1.0 for all crushers operating in closed circuit with a classifying screen. If the crusher is in open circuit, eg pebble crusher in a AG/SAG circuit, K. 2. takes the value of 1.19. x. 1 = P. 80. in microns of the circuit feed . x. 2 = P. 80. in microns of the circuit product . M. ic = Crushing ore work index and is provided directly by SMC Test ®

### Equipment Sizing: Crusher or Grinding Mill

The Work Index can be calculated by Equation 1 from commercial crushing or grinding data or from pilot mill tests, and compared with the listed Work Indexes in Tables I

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

1. Calculate the Actual Operating Bond Work Index of the grinding circuit. • Estimate the F80 and P80. • Calculate the work or specific energy input from the size reduction equipment power and circuit tonnage (equation 1). Auxiliary equipment power is excluded. P W = ––– (1) T

### How To Calculate Crusher Work Index

Crusher operating work asindex calculation atmandu. crusher work index tests crusher work index tests operating crusher is within the normal range of variation for this calculation crushing crusher work index wordreference forums 20181031 crusher work r wikipediaeach crusher is designed to work with a certain maximum size of raw material and often delivers its output to a screening machine

### USING THE SMC TEST® TO PREDICT COMMINUTION

= 1.0 for all crushers operating in closed circuit with a classifying screen. If the crusher is in open circuit, eg pebble crusher in a AG/SAG circuit, K. 2. takes the value of 1.19. x. 1 = P. 80. in microns of the circuit feed . x. 2 = P. 80. in microns of the circuit product . M. ic = Crushing ore work index and is provided directly by SMC

### TECHNICAL NOTE PRIMARY CRUSHER OPTIMAL FEED

The operating Work index Wio p can be calculated from crushing in commercial plants to compare the crusher efficiency with laboratory test results. The Wio p can be obtained by transposing

### Application of Operating Work Indices in Autogenous

Note that the ball mill operating work index is applied only on the portion that needs the additional grinding (Q2), which renders to the AG/SAG mill the credit for the fraction of the material that had been already ground to final product (Q1). To calculate the operating work

### Jaw Crusher ScienceDirect

Jan 01, 2016 capacity of crusher, 2. power consumption if the work index of the material is 12.5 kWh/t, 3. operating speed, 4. minimum level at which the feed should be maintained in the feed-hopper. 4.5. A cement manufacturer needed to produce lime at the rate of 140,000 t/year in a rotary kiln operating

### 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 test screen undersize per revolution, G, and

### A Method of C alculating Autogenous/ Semi-Autogenous

The operating ﬁ work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high inefﬁ ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is not suf cient to compensate ﬁ for the milling inef ciencies that arise. This can result in ﬁ the mill being undersized. To counter this problem it

### Mathematical modeling of a vertical shaft impact crusher

In the present work, the Andersen/Awachie/Whiten model has been used as the basis for modeling a VSI crusher operating in an industrial plant in Brazil, processing quarry rock to product

### (PDF) SIZE REDUCTION BY CRUSHING METHODS

The operating stages in minerals process ing have remained the same for also cal led work index and the “wear profile A jaw crusher is generally used as a prim ary crusher in a crushing

### Ball Mill Design/Power Calculation

Apr 08, 2018 The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

### (PDF) Prediction of Cone Crusher Performance Considering

a wear function with data obtained from an actual crusher operating at gradually increasing CSS. Therefore, it is very meaningful to further study the effect of liner wear on cone crusher performance.

### Power Calculation Of Impact Coal Crusher Based On Bond

crusher operating work index calculation. power calculation of impact coal crusher based on bond work index . the relationships between the bond work index with . jaw crusher and calculation of the Read more. bonds third equation mining.

### Gyratory and Cone Crusher ScienceDirect

Jan 01, 2016 Calculate the required crusher set to satisfy the crusher throughput. 5.12. A long shaft suspended spindle gyratory crusher 12.7 cm × 127 cm was commissioned to crush limestone with a work index of 13.2 kWh/t. The crusher was adjusted to a throw of 0.7 cm and the set at 2.54 cm. The average size distribution was

### QUICK METHOD FOR BOND WORK INDEXAPPROXIMATE

comminution plants designing. Determining the Bond work index value is quite complicated, time-consuming and requires trained operating personnel and therefore is subjected to errors. A quick method for the Bond work index approximate value determination, which is based on the first order grinding kinetics, is presented in this paper.

### Application of Operating Work Indices in Autogenous

Note that the ball mill operating work index is applied only on the portion that needs the additional grinding (Q2), which renders to the AG/SAG mill the credit for the fraction of the material that had been already ground to final product (Q1). To calculate the operating work

### TECHNICAL NOTE PRIMARY CRUSHER OPTIMAL FEED

The operating Work index Wio p can be calculated from crushing in commercial plants to compare the crusher efficiency with laboratory test results. The Wio p can be obtained by transposing

### Gyratory and Cone Crusher ScienceDirect

Jan 01, 2016 Calculate the required crusher set to satisfy the crusher throughput. 5.12. A long shaft suspended spindle gyratory crusher 12.7 cm × 127 cm was commissioned to crush limestone with a work index of 13.2 kWh/t. The crusher was adjusted to a throw of 0.7 cm and the set at 2.54 cm. The average size distribution was

### Operating work index is not the specific energy consumption

Oct 24, 2018 To calculate the operating work index of a circuit, you must measure four things: P: The power draw of the mill. This is usually calculated from the input leads to the motor, then multiplied by

### O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE

It is worth noticing that calculation of EF4 CDBM requires RWI and BWI, and F 80 in (2) is understood as the initial size of Standard size ranges and the related Bond work indexes Feed size F 80, μm Product size P 80, μm Work index 100000 10000 crushing CWI 10000 2100 rod milling RWI 2100 100 ball milling BWI Fig. 1. Laboratory equipment

### A Method of C alculating Autogenous/ Semi-Autogenous

The operating ﬁ work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high inefﬁ ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is not suf cient to compensate ﬁ for the milling inef ciencies that arise. This can result in ﬁ the mill being undersized. To counter this problem it

### (PDF) SIZE REDUCTION BY CRUSHING METHODS

The operating stages in minerals process ing have remained the same for also cal led work index and the “wear profile A jaw crusher is generally used as a prim ary crusher in a crushing

### Mathematical modeling of a vertical shaft impact crusher

In the present work, the Andersen/Awachie/Whiten model has been used as the basis for modeling a VSI crusher operating in an industrial plant in Brazil, processing quarry rock to product

### QUICK METHOD FOR BOND WORK INDEXAPPROXIMATE

comminution plants designing. Determining the Bond work index value is quite complicated, time-consuming and requires trained operating personnel and therefore is subjected to errors. A quick method for the Bond work index approximate value determination, which is based on the first order grinding kinetics, is presented in this paper.

### (PDF) Prediction of Cone Crusher Performance Considering

a wear function with data obtained from an actual crusher operating at gradually increasing CSS. Therefore, it is very meaningful to further study the effect of liner wear on cone crusher performance.

### Size Reduction and Energy Requirement ScienceDirect

Jan 01, 2016 To calculate the operating work index the work input is obtained from the mill power which, if obtained from the motor power, has to be the power at the mill pinion shaft. That is, if adjustments were coupled directly to the pinion shaft, then motor output power is

### Jaw Crusher an overview ScienceDirect Topics

crusher design characteristics such as width and depth of the crushing chamber, 2. open and closed side settings, 3. options on feeding method, e.g., intermittent feeding (manual or direct by haulage trucks) and continuous by conveyor belt, 4. operating characteristics such as the length of stroke, the number of strokes per minute, the nip angle.

### Crushing of coal and calculation of size reduction efficiency.

Feb 25, 2015 Bond Work Index 𝑤 = 10𝑊𝑖 1 𝑝 − 1 𝑓 W = Power required in KWH to crush 1 short tonne ( 2000 pound) of material Wi is the work index of the material p is the 80 % passing size of the product f is the 80 % passing size of the feed 2/25/2015 6:58:05 AM 23 24.

### How To Calculategrindablity Vs Tph In Cement Mill Roller

Crusher Operating Work Asindex Calculation Atmandu . We have crusher operating work asindex calculationpower calculation of impact coal crusher based on calculate crusher work index how to calculate the power for a 100 tph cement mill how to calculate mill bond or work index how to calculate crusher work index bond ball mill index jktech a bond ball mill index test bbmwi is a standard test for

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