Bond Work Index Test Ball Mill US 13800 The FC Bond Work Index Test Ball Mill was designed by F C Bond for use in determining the Bond Index a measure of grindability and power required for grinding applications The FC Bond Mills are used in laboratories throughout the world
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The bond work index wi is defined in a bond ball mill on the samples of standard size 3327 0 mmget price
The corrected ball mill operating work index using this method is 133kwht which is close to the bond ball mill work index of the ore 134kwht the measured transfer size of 726m produced by the agsag mill corresponds to an equivalent 237m t 80get price
First a jar mill grindability test requires a 5 lb 2 kg sample and produces a direct measured specific energy net hphrt to grind from the design feed size to the required product size the second test a bond work index determination results in a specific energy valueget price
Ball mill charge size distributions originally specified for bond grindability tests to determine the bond work index bwi are not commercially available those proposed to date do not match all of bonds 1961 original specifications of total ball mass number and surface areaget price
Bond s work index ball mill manufactuering design the bond ball mill work index can be used in the design calculations and simulations using jksimmet of a new grinding design construction and performance analysis of a 5 kglaboratory 85 microns is less than p80 100 microns used in the design of the ball millget price
The experimental execution conditions of the standard bond test together with the specification of the bond mill are given in table 1 table 1 bonds mill specification and grinding conditions mill diameter d m cm 3048 mill length l m cm 3048 number of mill rotations in minutes n min1 70 mill balls weight m b kg 21125get price
Similarly to bond work index k parameter considers besides the energy consumption the sizes from mills feed and product which normalizes the data from the three mills 00 20 40 60 80 100 120 140 t ball mill 1 ball mill 2 vertical mill average ball mill 1 average ball mill 2 average vertical millget price
Bonds work index ball mill inner liners design the work index calculated from the testing can be used in the design and analysis of ball mill circuits the test requires a minimum of 10kg of sample that has been stagecrushed to 100 passing size of lt335 mm any screen size below 600181m can be used for the testwork depending on your requirements bond rod mill grindability testget price
Bond s work index ball mill inner liners design bonds work inde ball mill manufactuering design and bondsbond s work inde ball mill inner technical notesgrinding rp king mineral equationd is the diameter inside the mill liners and the effective length of the mill steel balls in mill or large lumps of ore in an rod mills in mular al and bhappu r b editors sing plant designget price
A bond ball mill work index test is a standard test for determining the ball mill work index of a sample of ore it was developed by fred bond in 1952 and modified in 1961 jkmrc co 2006this index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy requiredget price
They require a specific 305mm diameter x 305mm long inside dimensions horizontal axis ball mill without lifters operating at 70 rpm to perform grindabilities from 28 to 500 mesh and a 305mm diameter x 610mm long rod mill with a wave type liner operating at 46get price
Bond ball mill grindability difine capacity11000th kinetic grinding test approach to estimate the ball mill kinetic grinding test approach to estimate the ball mill the w i parameter is obtained from bonds ball mill grindability test bond 1961 this test is performed according to the stand ard bond procedure which proposed model is presented in eq bond ball mill grindability difineget price
1 recirculating load 100xball mill feedplant feed 2 cyclone underflow solids 3 d80 in the mill feed and product calculate the power required using rowlands factor for bond work index in open circuit 4 d50 in the cyclone 5 pressure drop across the cyclone 6get price
A bond work index mill ball charge and closing screen an alternative mill ball charge is proposed that closely approximates bonds original total ball mass number of balls and ball surface arearesults of bond work index tests of six pure materials calcite magnesite labradorite feldspar quartz andalusite and glass using closing screen apertures p values of andget price
The ideal ball charge volume for a sag mill is 12 v v 16 according to the design objective and the maximum ball size has a diameter of 150 mm during operation however breakage rates of the shell liners and lifters become extremely high with a lifespan of only one month when a ball charge volume of 12 v v was usedget price
Ball mill grindability the test mesh used was 100 mesh p 1416 the bond work index w i was calculated from equation 2 w i 445p 1 023 x gbp 082 10p 80 05 05 10f 80 2 where f 80 is the size in m at which 80 percent of the new feed to ball mill passesget price
Jk bond ball mill test jktech use of work index since its introduction in the 1960s the bond ball mill work index bbmwi parameter has been extensively used in predicting ball mill power draw along with comminution circuit design the work index parameter is widely used in tracking mill performanceget price
Bond index ball mill rod mill bt 100 xl the grinding jar for the bond index rod mill is 12 x 24 in size and has a waveshaped design at least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill the rod mill work index rwi is used for particle size determination in a size range from 25 mm down to 2 1 mm whereas ball mill workget price
And its correlation as a fast method the determination of the bond index from the hardgrove index by calculation is almost matching with measured bonds work index the bonds work index of the above rock samples calculated from the hardgrove index value has shown aget price
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 ofget price
Screened and the index determined from the size analysis curves 25 work index determination the asreceived samples were prepared to all passing 335 mm the 106 m particles were also removed and analysis was conducted on the 335 mm 106 m material the tests were performed in a standard bond ball mill with weight of materialget price
Determination of the work index for ball and rod mills in 1952 and modified it in 1961 the standard bond ball mill grindability test is a closed circuit dry grinding test with a 250 circulating load the standard procedural outline of the test is stated in bond 1961 the work index for a ball mill wi is then calculated from the followingget price
Get latest price maximum outside diameter 1500 mmmaximum thickness 300mmmaximum weight 2500 kgshafts stainless steel gears and flanges view complete detailsget price