# Ball Mill Operatng Work Index Calculation

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

power draw of AG/SAG and ball mills. 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 indices, equations [5] and [6 .

• ### sagdesign

-BWI = Bond ball mill work index on SAG ground ore, kWh/ton ground F 80 = 80% passing of SAG ground of the test feed size, microns P 80 = 80% passing from the test product size, microns P cs = Bond closing screen size, microns G pb = Ball mill grindability (average of last three cycles), gr/rev Determination of the SAG and Ball Mill Pinion Energy :

• ### ball mill work index calculation xls

ball mill design calculation xls and file A Bond Ball Mill Index Test BBMWI is a standard test for determining the Ball Mill Work Index of a sample ball mill work index calculation. ball mill work index calculation grinding mill equipment ball mill work index calculation xls Grinding Mill China ball mill operatng work index calculation MTM Crusher

• ### Calculation of energy required for grinding in a ball mill .

Calculation of energy required for grinding in a ball mill. Int. J. Miner. Process., 25: 41-46. The Bond work index, Wi, as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding product.

• ### Operating Work Index For Cone Crusher | Crusher Mills .

Wi is the work index measured in a laboratory ball mill . – 3 people operating the Rock Crusher, . Crushers Operating – Free Owners Manual PDF MVP SERIES CONE CRUSHERS – Pdf. crushers operating pdf improved product . crushers operating pdf work the outline of the crushing . sg quality income index;

• ### ball mill work index calculation xls

ball mill design calculation xls and file A Bond Ball Mill Index Test BBMWI is a standard test for determining the Ball Mill Work Index of a sample ball mill work index calculation. ball mill work index calculation grinding mill equipment ball mill work index calculation xls Grinding Mill China ball mill operatng work index calculation MTM Crusher

• ### ball mill work index calculation xls

ball mill work calculation xls - resourceplus. ball mill work index calculation xls - gauryamunacity. ball mill work index calculation xls. . we are using the PIPS for several years already and I have to admit that we cleaned the inner surface of the work chamber . Free Quote. Vibrating Screen Calculation Xls File - Free Quote

• ### JKTech Laboratory Services

JKTech Laboratory Services Bond Ball Mill Index Test (BRMWI) A Bond Ball Mill Index Test (BBMWI) is a standard test for determining the Ball Mill Work Index of a sample of ore. The BBMWI is a measure of the resistance of the material to crushing and grinding. It can be used to determine

• ### Grinding in Ball Mills: Modeling and Process Control

Grinding in ball mills is an important technological process applied to reduce the . the work index of the material, the mill shaft power and . depending on the type of the mill, the operating conditions and the type of the material being ground.

• ### A quick method for bond work index approximate value .

The Bond ball mill grindability test is run in a laboratory until a circulating load of 250% is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to .

• ### ball mill operatng work index calculation - bondhumahal

Ball Mill Design/Power Calculation. 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 .

• ### ball mill work index calculation xls

ball mill work calculation xls - resourceplus. ball mill work index calculation xls - gauryamunacity. ball mill work index calculation xls. . we are using the PIPS for several years already and I have to admit that we cleaned the inner surface of the work chamber . Free Quote. Vibrating Screen Calculation Xls File - Free Quote

• ### MODELING THE SPECIFIC GRINDING ENERGY AND BALL .

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL-MILL SCALEUP Ball-mill scale up (Bond's Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)

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

CALCULATION OF THE REQUIRED SEMIAUTOGENOUS MILL POWER BASED ON THE BOND WORK INDEXES O. I. SKARIN, Senior Researcher, Candidate of Engineering Sciences N. O. TIKHONOV, Head of Subdivision Optimization of ore pretreatment and selection of the ap-propriate equipment is one of the main areas of activity of RIVS Science and Production Association.

• ### Bond Tests | Mining | SGS

Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond's Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill.

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

For overflow ball mills, the charge should not exceed 45% of the mill volume . For grate discharge mills, the charge should occupy about 50% of the mill volume . Bond developed a relationship that can be used to determine the percent charge by volume as a function of the vertical height above the charge, He, and the radius of the mill, R, i.e.,

• ### Calculation of energy required for grinding in a ball mill .

Calculation of energy required for grinding in a ball mill. Int. J. Miner. Process., 25: 41-46. The Bond work index, Wi, as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding product.

• ### A quick method for bond work index approximate value .

The Bond ball mill grindability test is run in a laboratory until a circulating load of 250% is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to .

• ### formula for calculating critical in ball mill

ball mill calculation critical speed tfg. calculator for ball mill critical speed clevelandfarm. critical speed of the ball mill,nc in powder treatment in a planetary ball mill at 200, 300 and 400 powders for the detergent balls, time of grinding, particle density and speed . Read more ball millcritical speed calculation . size.

• ### Orway Mineral Consultants Canada Ltd. Mississauga, ON .

80 sizes typically reached by conventional ball milling. The delineating size between coarse and fine grinding is 750 µm. SMC test results are used to determine the Drop Weight Index (DWi) and the coarse ore grinding index (M ia). Test data from the Bond ball mill work index test is used to calculate the fine grinding index (M ib). The M ia and M

• ### Ball Mill Design/Power Calculation - LinkedIn

Dec 12, 2016 · Ball Mill Power Calculation Example A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of .

• ### ball mill operatng work index calculation - irisindia

Calculation of energy required for grinding in. ball mill operatng work index calculation For example, a grinding circuit is processing 450 t/h (of dry feed) with a mill, Then WIo, the "Operating Work Index" of this circuit, is calculated as follows:, For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill .

• ### ball mill operatng work index calculation

Regrind Mills: Challenges of Scaleup Michael Larson1,Greg - IsaMill- ball mill operatng work index calculation,The standard Bond Mill test applies for coarser ball milling, but is not The operating work index was also calculated for all available full scale mill data and isMill Circuit Pump Manual - Weir MineralsA typical SAG mill with a smaller conventional ball mill shown in the background .

• ### work index calculation of ball mill ppt - conveyorsindia

A New Approach to the Calculation of Work Index and . Ball Mill Batch Process The mill dimensions, (D × L), are 0.204 × 0.158 m and it is loaded with 6.5 kg steel balls between 25 and 32 mm in diameter.

• ### sagdesign

-BWI = Bond ball mill work index on SAG ground ore, kWh/ton ground F 80 = 80% passing of SAG ground of the test feed size, microns P 80 = 80% passing from the test product size, microns P cs = Bond closing screen size, microns G pb = Ball mill grindability (average of last three cycles), gr/rev Determination of the SAG and Ball Mill Pinion Energy :

• ### ball mill work index calculation - BINQ Mining

ball mill specific energy calculate – Gold Ore Crusher. Calculation of the power draw of dry multi-compartment ball mills 229 In order to design a ball mill and to calculate the . Bond ball mill work index . »More detailed

• ### Bond Grinding Circuit Efficiency - ceecthefuture

Mill Ball Mill Closed circuit crushing to 16 mm Open circuit 8' dia. rod mill to 1 mm Closed circuit 8' dia. ball mill to P80 um The ore Test Work Index = Circuit Operating Work Index 9 The Standard Bond Circuit Coarse Ore Bins Fine Ore Bins Screen Crushing Screen Classification Rod Mill Ball Mill THIS IS THE REFERENCE BASIS FOR ALL WORK .

• ### QUICK METHOD FOR BOND WORK INDEXAPPROXIMATE .

The aim of this study was to develop a new method for assessing the Bond work index in a ball mill (BBWI), which is based on a first order kinetics present in the Bond ball mill for grinding mineral raw materials (Austin et al., 1981; Ahmadi and Shahsavari, 2009). Theoretical basis of quick procedure

• ### ball mill work index calculation xls - pochiraju

2013 High quality ball mill design calculation / gold ball mill ball ball mill design calculation pdf Ball . ball mill work index calculation xls – Grinding Mill China. . Estimation of the Operating Work Index from Plant Data. Get Price. Relationships between comminution energy and product size - saimm.

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

WiBM Bond Ball Mill Test Work Index (kWh/t) Wic Bond Impact Crushing Test Work Index (kWh/t) WioACT Actual Operating Bond Work Index determined from measurements on the circuit (kWh/t) . Calculate the Actual Operating Bond Work Index of the grinding circuit. • Estimate the F80 and P80.