### Work Index Ball Mill, पीसने वाली चक्की in Chennai, Star

This ball mill, also called mill for measuring bond work index, is a key device for measuring grinding work index. It is widely used by teaching and researching departments for grindability test. Specifications: Mill Linings. Ball and Pebble Mills may be lined with rubber, ceramic and

Get Price### Comparison of UCS to Bond Work Indices

FIGURE 6: BOND BALL MILL WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS (MPa) 5 10 15 20 25 30 WiBM (metric) Figure 6 displays the plot of ball mill Work Index (Wi BM) versus UCS. Still no relationship is observed.

Get Price### Comminution service offering Minerals Processing Division

qBond Work Index Testing Bond Ball Work Index Bond Rod Work Index Bond Crushability Work Index Bond Abrasion Work Index qJK Tech Testing JK Drop weight Test SAG Milling Comminution Test (SMC) COMMINUTION PILOT PLANT qAG/SAG Pilot Milling Mill dimensions: 1.7m x 0.6m length Typical throughput 0.5 -3.5 t/h depending on ore characteristics and

Get Price### bond ball mill work index equation in wills

bond ball mill work equation in wills. The work index (Wi) is calculated in a laboratory-scale ball mill with Bond equation. The Bond work index has been widely used in designing full-scale mills but the Bond test is rather complex lengthy susceptible to procedural errors and this is why attempts have been made to abbreviate and simplify Bond test procedure (Weiss 1985).

Get Price### Laboratory Milling

Laboratory Milling – Rod / Ball Mills including Bond Rod / Ball Work / Grindability Index. MARC manufactures a wide range of laboratory ball / rod mills and automated Bond rod / ball mills (with wave liners) to suit most metallurgical laboratory applications.

Get Price### bond ball mill calculations spreadsheet bond ball mill design

bond ball mill calculations spreadsheet. Impact on Grinding Mill Design and Recent New Discoveries. Bond Rod Mill, Ball Mill, and Crushing Work Index tests have been studied for years to should to be standardized to a point where the design calculations relate the empirical..get price

Get Price### bond ball mill work index

Typical values of Bond ball mill work index for soft oxidised ore bodies lie in the range 5-10 kWh/t at a standard product size of 80% passing 75m.

Get Price### Geometallurgy

The Bond ball mill work index test is thought to be additive because of its units of energy; nevertheless, experimental blending results show a non-additive behavior. [18] The SPI(R) value is known not to be an additive parameter, however errors introduced by block kriging are not thought to be significant .

Get Price### Metallurgical Engineering – Jet Rom Solution

The Bond Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball mill. It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions. It is a 'locked cycle' test conducted in closed circuit with a laboratory screen.

Get Price### Bond Grindability Inde Ball Mill Size Specifi Ion

Correction of Bond Ball Mill Work Index Test for Closing . Table 1: Bond Ball Mill Grindability Test Summary Closing size m Copper Mountain F80 m P80 m Gram per Revolution Work Index metric Specific Energy kWh/t 300 GeoMet Composite 2669.8 215.1 1.04 26.2 12.8 SAG Belt End 2812.4 210.4 1.03 25.8 12.9 SAG Belt Start 2626.5 216.0 1.03 26.6 12.9 SAG Belt Mid 2627.2 212.1 1.05 25.8 12.7

Get Price### ON THE DESIGN OF BALL MILLS FOR GRINDING ITABIRITE

Measurements of the Bond work index in ball mills have been conducted using the standard Bond mill (Table 1) operating in the standard conditions recommended by Bond.(1) The feed to the test was prepared by stage crushing so that 100% of the material passed the 3.35 mm (6#) opening sieve. The closing sieve (Am) used in all the tests was 150 m.

Get Price### Bond formula for the grinding balls size calculation

Oct 19, 2017There is a mathematical solution to this problem – the Bond formula. It uses to help determine the grinding media optimal size must be loaded into the ball mill for proper operation ensure. The calculation formula is below: B – the grinding balls diameter, mm; A – the correction factor (for grinding balls A = 20,17; for cilpence A = 18,15);

Get Price### VALIDATION OF A CLOSED CIRCUIT BALL MILL MODEL Alex

efficiency on milling performance. This testwork aimed to provide data to compare to the model discussed previously. The procedure followed in this investigation was a deviation of the standard locked cycle Bond Ball Mill Work Index Test (BMWI), where the circulating load and the classification

Get Price### Bond Ball Mill Work Index Xsm

Bond Ball Mill Work Index Xsm. Bond Ball Mill Work Index Xsm. AMIT 135: Lesson 7 Ball Mills Circuits . 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 get price

Get Price### ball mill grindability index gold mine africa

Test Method For Bond Ball Mill Work Index. Also indicative bond ball mill work index bbmwi for sartenga primary ore is in the order of 10kwht classifying primary ore as is very positive for the potential economics for the project indicating lower milling and power costs per tonne of ore in comparison to other gold projects in the west african .

Get Price### THE BOND WORK INDEX OF LIMESTONE AND ANDESITE

THE BOND WORK INDEX OF LIMESTONE AND ANDESITE MIXTURES** Abstract This paper investigates grinding of mineral mixtures with different grindabilities in the Bond ball mill. Understanding the ore mixture grinding is of great importance in mineral processing. The energy

Get Price### TITAN PRODUCTS

LAB/PILOT PLANT EQUIPMENT Bond Ball Mill. This 12" x 12" ball mill is universally used for grindability testing and determination of the Bond Work Index.

Get Price### Investigation of Bond's Work Index of Korean

In this study, It is secured calibration data for the Bond's work index of Korean desulfurizationlimestones according to the mining location with the standard-scale ball mill, work index were measured usingJIS M 4002 and KS E 3600. The results, Average work index of limestone are 15.05 kWh/ton in Donghae-Samcheokand 12.44 kWh/ton in Jecheon

Get Price### bond ball mill work index

The Bond low-energy impact crushing work index (more informally, the Bond crushing work index) is not as common as the Bond ball mill work index, and it is a notoriously noisy test. The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.

Get Price### COMPARISON OF HPGR

Bond ball mill work index C Wi Bond crusher work index D HPGR roll diameter (m) E sp net specific energy consumption (kWh/t) F HPGR hydraulic pressing force (kN) F 80 particle size at which 80% of particles pass in feed F SP 2HPGR specific pressing force (N/mm ) L HPGR roll length (m) ṁ or m-dot HPGR specific throughput constant (ts/hm3)

Get Price### how to calculate the energy consumption of a ball mill

Bond Ball Mill Index - JKTech. A Bond Ball Mill Index Test (BBMWI) is a standard test for determining the Ball Mill Work Index for example, the specific energy requirement Bond WI (kWh/t). Read more

Get Price### bond ball mill work index grindability tests

The Bond Ball Mill Work Index (BBWi) test is carried out in a standardised ball mill with a pre-defined media and ore charge. The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits. The test requires a minimum

Get Price### Solved: The Feed Stream Into A Ball Mill Has A Bond Work I

Question: The Feed Stream Into A Ball Mill Has A Bond Work Index Of 21.75 KWht?. The P80 Of Feed To The Mill Is 35.0 Mm And The P80 Of The Product From The Mill Is 0.160 Mm. Calculate The Work (in KWh/tonne) Required To Grind The Ore To The Product Size.

Get Price.,12"x 12",,,,,,44LB,。. BWIFRED C.。.

Get Price### Ball Mill

Bond ball mill index test jktech a bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits sample requirements a minimum of 8 kg of material crushed to nominally minus 10 mm is preferred jktech would stage crush the sample to minus 335 mm as required for. Online Chat

Get Price### Ball mill media optimization

plant ball mill's grinding efficiency (Fig. 1). The functional performance parameters "mill grinding rate through the size of 350 for wet overflow mills, etc. WI Bond test Work Index, kWh/short ton. SG Ore specific gravity. Cs Mill speed in percent of critical. ID Mill inside (liners, working) diameter, feet.

Get Price### (DOC) EXPERIMENT 2: BALL MILL GRINDABILITY TEST WAN

Different materials are used as media, including ceramic balls, flint pebbles and stainless steel balls.The objective of Bond ball mill test is carried out to determine the standard work index which is defined as the specific power required to reduce a material from a notional infinite size to a P80 size of 150μm.

Get Price### Alsto

Alsto ball mill a complying machine with the appropriate barrel and ball charge. The Bond Index Ball Mill is supplied standard with a barrel and rotating yoke assembly and the electric motor drive; with a standalone bench, funnel and screen.

Get Price### 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

Get Price### USING THE SMC TEST TO PREDICT COMMINUTION

work index covering grinding of fine particles is labelled M. ib (Morrell, 2008). M. ia. values are provided as a standard output from a SMC Test (Morrell, 2004. a) whilst M. ib. values can be determined using the data generated by a conventional Bond ball mill work index test (M. ib. is NOT the Bond ball work index). M. ic. and M. ih

Get Price### Work Index For Ball Mill

Ball mill work index adjustment . Ball mill work index adjustment The Bond ball mill work index test requires the operator to select an appropriate screen size to close the test The procedure states that the closing screen size should be such that the product size of the test is the same as the expected product size of the operating plant If the tests were done at the wrong closing screen

Get Price### RELO

BOND BALL MILL WORK INDEX TEST REPORT Sample Name : Limestone, density - 2,65 g/cm3 Test Procedure: Bond Work Index Determination Method Test Equipment: Standard Bond Ball Mill Mill size: D X L = 305 x 305 mm Mill volume: 22.3 dm3 Lining of the mill: smooth steel Rotation speed. 70 rpm (85% of ncrit) Grinding Media: ' Relo - C bodies

Get Price