two stage ball mill power consumpation calculation

In Grinding selecting calculate the correct or optimum ball size that allows for the best and optimumideal or target grind size to be achieved by your ball mill is an important thing for a Mineral Processing Engineer AKA Metallurgist to do Often the ball used in ball mills is oversize “just in case”

If P is less than 80 passing 70 microns power consumption will be 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

The power consumption of a ball mill is one of the most important parameters to consider in the design of a ball mill because it determines its economic efficiency Get Price And Support Online Ball Mill DesignPower Calculation LinkedIn If P is less than 80 passing 70 microns power consumption will be Ball Mill Power Calculation Example

Ball mills are used primary for single stage fine grinding regrinding and as the second stage in two stage grinding circuits According to the need of customers ball mill can be either wet or dry designs Ball mills have been designed in standard sizes of the final products between 0074 mm and 04 mm in diameter Input Size 020mm

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up Bond’s LawData 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

Just published is some Newmont data in a paper at SAG 2011 on both SAG and ball mill steel consumption The ball mill wear data reflected a 05 factor on the Bond equation consistent with Arts observation above I also like the Molycop equation Levi has discussed for ball mills although it does seem to reflect slightly higher wear rates than

The possibility of predicting energy consumption for ball mill concentrator when implementing intelligent forecasting system Compiled model to determine the power consumption of the electric

Mill power Usually plant operators use mill power readings as an indicator of ball filling degree and often try to keep it at the maximum level It is well known that the mill absorbed power depends on operating parameters other than ball level such as pulp density and liner configuration Figure 2 shows that there is no linear relation between

What is the effect of low ball full on grinding efficiencyOne of our clients is thinking of the future and has bought a ball mill that will be the right size someday but is very large nowI know what happens to mill power from adjustments to critical speed and balls charge

The first two Grinding Efficiency Measurement examples are given to show how to calculate Wio and Wioc for single stage ball mills Figure 1 The first example is a comparison of two parallel mills from a daily operating report Mill size 503m x 61m 165′ x 20′ with a ID of 16′

Please find below two calculators for sizing mills using the Bond and Rowland methods Ball mill sizing Calculator for ball mills in a single stage circuit Rod ball mill sizing Calculator for rod mills as first stage of the circuit and ball mills as second stage of the circuit

Figure 511 Power variation with mill speed for different media shapes J1586 Figure 512 Power variation with mill speed for different media shapes J2087 Figure 513 Power variation with mill speed for different media shapes J2587 Figure 514 Variation of mill power draw with mill filling J cylpebs media88

Ball Mills Mine Engineer Ball Mills are generally used to grind material 14 inch and finer down to the particle size of 20 to 75 microns To achieve a reasonable efficiency with ball

The Power Consumption Calculation of a Ball Drum Mill IDOSI Current methods of power consumption calculation of a mill drive do not allow determining the power consumption for ball drum mills with a crosslongitudinal

calculation of power consumption for ball mills and grinding calculation of power consumption for ball mills and grinding Jul 13 2012 Gulin crushing screening grinding and washing plant play a great role in aggregate

Although the tube ball mill was invented 120 years ago its grinding media charge grading is still calculated on subjective guidelines Starting from the fact that for two ball mills of different size virtually the same specific power consumption is stage to an upstream KHD roller press operated in circuit with a separator Get Price

Ball mills are used primary for single stage fine grinding regrinding and as the second stage in two stage grinding circuits According to the need of customers ball mill can be either wet or dry designs Ball mills have been designed in standard sizes of the final products between 0074 mm and 04 mm in diameter Input Size 020mm

Dec 08 2009 · Re how to estimate the wear rate for Ball mill Most practical way to by measuring empty height and calculating the volumetric filling of grinding ative way to make track of mill main drive kW consumption reduction and add makeup charge according to the extent of fall in power consumption

Comparing ball and vertical mills performance An industrial case study Andreia C Rosa1 Industrial data such as mill power cyclones feed pressure and mill the vertical mill consistently presented lower net specific energy consumption than the ball mills which operate on the same circuit The averages were 113 117 and 65 kWht

A material constant which is a factor used for power calculations expressed in Nmm 2 Machining time T c min Machining length l m divided by the table feed v f Net power P c and efficiency η mt Machine tool oriented values which assist in calculating the net power to ensure that the machine can handle the cutter and operation

stage ball mills rod mills or AGSAG mills when calculating power according to the Bond Third Theory method Rod mill and AGSAG mill products are similar and tend to be not as steep as a 05 slope when plotted on loglog paper parameters are inputted for the speci c power calculation fi

mill is the energy consumption The power supplied to the mill is used primarily to lift the load medium and charge Additional power is required to keep the mill rotating 813 Power drawn by ball semiautogenous and autogenous mills A simplified picture of the mill load is shown in Figure 83 Ad this can be used to establish the essential

Modern Processing Techniques to minimize cost in Cement Industry VK Batra PK Mittal Kamal Kumar P N Chhangani a typical crushing system used to be a two stage crushing with primary crusher in stage 1 mostly jaw crusher and hammer crusher in stage 2 configuration was typically to suit ball mill applications for grinding

process is powerintensive The electric power consumption for solid material grinding amounts up to about 20 of the total power consumption for own needs of the plant or about 2 of the total amount of power produced by the heat power station 1 A ball mill consists of a cylindrical steel drum with

Dry batch milling tests were performed in a laboratory scale ball mill measuring 302 by 282 cm The mill specifications are given in Table 1 A constant ball load of 20 was maintained in all the tests with a ratio of 05 for binary and 033 for trinary ball mix

HPGR and ball mill circuit This is a highly experimental model Use at your own risk The high pressure grinding roll HPGR and ball mill circuit can be thought of as a variation on the classical single stage ball mill SSBM circuit with the final stage of cone crushing replaced by an HPGR

THE INFLUENCE OF MILL SPEED AND PULP DENSITY ON THE GRINDING EFFICIENCY 89 Pilot plant description The milling pilot plant consists of two containers mounted on top of each other see Figures 1 and 2 The bottom container holds the mill the drive train rollers and the hightension cabinet The feed boxes fine and coarse feed are built into the