determine size ball mill
2 Ball milling – a ball mill with a diameter of 244 meters inside new liners grinding wet in open circuit When the grinding conditions differ from these specified conditions efficiency factors Rowland and Kjos 1978 have to be used in conjunction with equation 1
Equipment Sizing Crusher or Grinding Mill The 159 indicates a 548 crusher size with 1″ eccentric throw With 1in eccentric throw the motor hp allowed on the crusher is a maximum of 125 However since only 903 hp is required for this average material a 100hp motor is sufficient
More DetailCalculate Ball Mill Grinding Capacity As defined this value should never exceed 100 but in some cases – particularly in Grate Discharge Mills – it could be lower than 100 Note that this interstitial slurry does not include the overfilling slurry derived from the difference between the Charge and Ball Mill Filling
More DetailBall Mill Power Calculation Example 1 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 80 passing ¼ inch 6350 microns The required product size distribution is to be 80 passing 100 mesh 149 microns
More DetailMill Speed No matter how large or small a mill ball mill ceramic lined mill pebble mill jar mill or laboratory jar rolling mill its rotational speed is important to proper and efficient mill operation Too low a speed and little energy is imparted on the product
More DetailInvestigations were carried out in a laboratory ball mill having the size of DxL 160x200 mm with a ribbed inside surface of the drum The mill ball loading was 40 by volume the rotation rate was equal to 85 of the critical speed
More DetailThe loading or change volume can then be read off the graph below or approximated from the equation and calculation Steel Charge Loading in Mill 113 – 126 H D Ball Mill Charge Volume Calculation Charge Volume of a Grinding Mill Method 1 Charge Volume of a Grinding Mill Method 2
More DetailPopular Answers 1 Ball size depends on initial size of charge and ranges from 10mm150mm dia For particular material and initial size the ball size must be optimized Please refer the link below and see if it works for you and other method is hit and trial
More DetailFig 6 shows one set of results where the circuit capacities are shown in threeballsize ternary diagrams for various feed sizes with a circulation ratio of 25 at a size reduction ratio of 451 using a 1 m diameter ball mill It can be seen that maximum contour lines stay in the bottom of the diagrams for all cases indicating that intermediate size balls 359 mm balls do not play a significant role as far as the
More DetailBall mills are commonly used in the manufacture of Portland cement and finer grinding stages of mineral processing one example being the Sepro tyre drive Grinding Mill Industrial ball mills can be as large as 85 m 28 ft in diameter with a 22 MW motor 4 drawing approximately 00011 of the total worlds power see List of countries by electricity consumption
More Detailthe 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 features of a model for mill
More DetailBall Mill Finish Calculator The Ball Mill Finish Calculator can be used when an end mill with a full radius a ball mill is used on a contoured surface The tool radius on each side of the cut will leave stock referred to as a scallop
More DetailAs a result a small cusp of material called a scallop will remain between these cuts on any surrounding walls or on the machined surface if a ball end mill is used The size of the stepover distance and the tool diameter will determine the scallop height between each step
More DetailCalculate Surface Finish when using a Ball Nose End Mill
More DetailBall Mill Finish Calculator The Ball Mill Finish Calculator can be used when an end mill with a full radius a ball mill is used on a contoured surface The tool radius on each side of the cut will leave stock referred to as a scallop The finish of the part will be determined by the height of the scallop amd the scallop will be determined by
More Detail1 Based on grain size hardness material grindability and the product fineness requirements we can determine ball gradation When material grain size is small and fineness requirement high we need to choose small size steel ball to strengthen material grinding
More DetailBall Mill Design Autogenous mills range up to 12 meters in diameter The lengthtodiameter ratios in the previous table are for normal applications For primary grinding the ratio could vary between 11and 181 For fine regrinding in open circuit the ratio ranges from 131 to 151
More DetailThe Slice Mill is simply a mill of the same diameter as the production mill but much shorter A Slice Mill of 72” diameter by 12” wide would replicate the result of a normal production mill 72” in diameter as 120” long A Slice Mill is the same diameter as the production mill but shorter in length
More DetailThe standard Bond Ball Mill Work Index test procedure is firstly to stage crush the feed to minus 335mm and size a representative sample The test then involves a series of batch grinds in a standard Bond mill A Bond mill is 0305m by 0305m with rounded corners a smooth lining and runs at 70rpm
More DetailWhat is the best way to determine the balltopowder ratio for ballmilling a new material View How can one select ball size in ball milling and how much material should be taken in mill pot
More DetailTheory and Practice for Jar Ball and Pebble Milling Types of Mills Ball and Pebble Mills The expressions “ball milling” and “pebble milling” are frequently used interchangeably Usually however a ball mill is referred to as fineground particles will result since the smaller voids will determine the size of
More DetailGrinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical mechanical and chemical characteristics Typical examples are the various ores minerals limestone etc The applications of ball mills are ubiquitous in mineral
More DetailMar 08 2013 · in literatures it is written that the grinding efficiency of ball mill is very less less than 10 PLEASE EXPALIN IN A N EXCEL SHEET TO CALCUALTE THE SAME THANKS
More DetailCombining values from the two systems may result in nonconformance with the standard 2 21 Wet Ball Mill machine consisting of a watertight steel cylinder closed at one end with inside dimensions of 2588 ± 3 mm 10188 ± 0125 in in diameter and 2731 ± 3 mm 1075 ± 0125 in in length
More DetailMartin Chick Associates CNC Programming Services Phone 440 2514290 Fax 440 6392838 EMail info Home Resources Speed And Feed Calculators Ball Mill Finish Calculator Part Spacing Calculator G And M Code Characters Standard End Mill Sizes Standard Drill Sizes Drill And Counterbore Sizes
More DetailNote in Figure 1 that the rod mill product slope is less than 05 due to an extra amount of nes present being ﬁ ﬁ ner than 650 μm These ﬁ nes proceed to the ball mill improving the ball mill efﬁ ciency Also the plotted rod mill P80 value as shown in Figure 1 is 2900 μm
More DetailThe starting point for ball mill media and liquid charging is generally as follows 50 media charge Assuming 26 void space between spherical balls nonspherical irregularly shaped and mixedsize media will increase or decrease the free space 50 x 26 13 free space
More DetailDifferent materials are used as media including ceramic balls flint pebbles and stainless steel 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
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