Ball mill design requires a Bond work index, BWi, for ball mills at the correct passing size SAG mill design requires an appropriate SAG test, for example, SPI Chapter 5. Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral Chapter 12 .
Get PriceBall mill design requires a Bond work index, BWi, for ball mills at the correct passing size SAG mill design requires an appropriate SAG test, for example, SPI Chapter 5. Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral Chapter 12 .
The test determines the Bond Ball Mill Work Index which is used with Bonds Third Theory of Comminution to calculate net power requirements. Various correction factors may have to be applied. W Wi 10P 10F Where W Net power consumption in kWht Wi Bond work index either Imperial or Metric units
in the design of a grinding circuit. The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill. 2. Procedure 2.1. Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh 3.35mm, from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill. A feed particle size
fine grinding with a ball mill pdf inclined vibrating screen vibration analysis machines used in coal handling plant vibrating screen india china australia sayaji crusher 36 x 24 parker company for crushers and asphalt plant rock and stone moldings pulverizer machine for lldpe from china Project Case Mining Production Line ...
Bond ball mill work index Figure 2 Ball mill for determining Bond ball mill work index 1 For the purists, there were two models in existence at the time the Von Rittinger and Kick models. Neither of these gave results that matched the observations of specific energy consumption from tumbling mills.
Sep 12, 2019 However, this requires a significant amount of ore samples, a lot of labor and the pilot plants. Fred Bond published an article in 1961, which, described the procedure for testing ores for a Bond Ball Index. This parameter is still one of the most demanded tools in the design, evaluation and optimization of ball grinding plants around the world.
FIGURE 8 ROD MILLBALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS MPa 0 0.5 1 1.5 2 WiRMWiBM metric Siddall et al 1996 identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ores compentency. Figure 8 plots this ratio versus UCS no trend is apparent ...
Ball Mill Wio, BWio 8.6 Circuit Wio, OWio 14.6 Bond Ball Mill Work Index, BWi, kWht 13.4 Bond Rod Mill Work Index, RWi, kWht 18.1 Table 1. Example of AGSAG Ball Mill Circuit Wio Calculations 1 2 ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect on ...
Standard size ranges and the related Bond work indexes Feed size F 80, m Product size P 80, m Work index 100000 10000 crushing CWI 10000 2100 rod milling RWI 2100 100 ball milling BWI Fig. 1. Laboratory equipment used by RIVS for determining the Bond work
Bond work index value of these components mixtures is greater than the Bond work in-dex of harder components, clinker. Oner 2000 have conducted a research of clinker and blast furnace slag mixture Bond Work Index in different mass propor-tions. He found out that these values are always lower than the Bond Index obtained
The SAG mill pinion energy, W SDT kWht and SAG discharge Bond ball mill work index, S d-BWI kWht, are then used to calculate the total energy to grind the ore from 80 passing 152 mm to 80 passing the client specified final product size P 80.This information, along with the ore specific gravity, is used to calculate necessary mill sizes and motor power in industrial applications.
Bond laboratory ball work index kWhtonne P. 1 closing screen size in microns . Gbp net grams of screen undersize per mill revolution . P 80 passing size of the product in microns . F 80 passing size of the feed in microns . Circuit Equipment Configurations Although the model can be used for a very wide range of
Sep 08, 2013 The difference between the Energy Index and the Bond Work Index is that the Bond index is intended for use with actual mills whereas the Energy Index is directly obtained from the results of laboratory mills. However, the Energy Index is directly related to the Bond Work Index by the formula-Work Index C Energy Index where C is a constant ...
Ball Mills Capacity From 0.2-90 TH AdvantagesDesigned for long service life, minimum maintenance, can grind and homogenize mineral ores down to the nano range, large volume of processing capacity Max Feeding size 25mm Discharge size0.075-0.4mm Typesoverflow ball mills, grate discharge ball mills Service 24hrs quotation, custom made parts, processing
randpic bonds work index ball mill inner liners design. Abrasion Test Mining SGS- bonds work index ball mill inner liners design ,The Abrasion test will allow you to quantify this and design accordingly The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod mills, and ball millsbond s work index ball mill inner liners
Mill Type Overview. Three types of mill design are common. The Overflow Discharge mill is best suited for fine grinding to 75 106 microns. The Diaphram or Grate Discharge mill keeps coarse particles within the mill for additional grinding and typically used for grinds to 150 250 microns. The Center-Periphery Discharge mill has feed reporting from both ends and the product discharges ...
RETSCH is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application. The High Energy Ball Mill E max and MM 500 were developed for grinding with the highest energy input. The innovative design of both, the mills and the grinding jars, allows for continuous grinding down to the nano range in the shortest amount of time - with only minor warming ...
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Sep 17, 2020 The Bond Ball Mill Work Index remains today as the only tool used for ball mill scale-up design. For an only nominally, not at all materially modified update on its use for industrial mill sizing, see Selection of Rod Mills, Ball Mills, Pebble Mills, and Regrind Mills
The Bond work index is one of the most useful and interesting parameters used in designing grinding equipment. However, it must be obtained under restrained conditions, especially in regards to the Bond standard lab mill. The main objective of this study is to show how this index can be obtained using a Denver ball mill, which is present in most mineral processing laboratories.
Since for the ball mill design we are using 80 passing, the required value of C2 for the ball mill will be equal to1.20. C3 is the correction factor for mill diameter and is given as 3 2.44 0.2 3 However, it is important to note that C3 0.914 vessel used in producing the ball mill was got from a
Bond developed the well known Bond work index which is an indicator of a materials resistance to crushing and grinding. Each of these theories was useful in the design and scale up of ball mill operations, however they told little of the expected size distributions, and most
Jun 13, 2014 ... lizenithne bond ball mill work index, Links goo.glDII9h4 More details goo.glN1nfWU Hot ... To grind the given lizenithne material to a smaller size using a ball mill and to obtain the .... Bonds law is often written in terms of the work index Wi as,. ... GBM specializes in the design and manufacture of mining ...
The SAG mill pinion energy, W SDT kWht and SAG discharge Bond ball mill work index, S d-BWI kWht, are then used to calculate the total energy to grind the ore from 80 passing 152 mm to 80 passing the client specified final product size P 80.This information, along with the ore specific gravity, is used to calculate necessary mill sizes and motor power in industrial applications.