work index for iron ball mill
Reference mineral Granite of known weight and work index 1514 Kwh work index was to be determined was ground in the same ball mill under same condition as Index of Birnin – gwari Iron ore in Nigeria Journal
Reference mineral Granite of known weight and work index 1514 Kwh work index was to be determined was ground in the same ball mill under same condition as Index of Birnin – gwari Iron ore in Nigeria Journal
Measuring ore grindability in balls mills The Bond Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball mill It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions
We have onnage capacity knowing ball mill work indexThe grinding mill output will vary considerably with the Work Index If the feed size was 13000 micrometers for the same grind production size theoretical output from Fig 21 would change from about 90000 tons per day on the 13 Work Index down to 65000 tons per day on the 16 Work Index
Procedure for determination of ball Bond work index in the 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 Get the price√
A ball mill is a type of grinder used to grind blend and sometimes for mixing of materials for use in mineral dressing processes paints pyrotechnics ceramics and selective laser sintering It works on the principle of impact and attrition size reduction is done by impact as the balls drop from near the top of the shell A ball mill consists of a hollow cylindrical shell rotating about its axis The axis of the shell may
The Bond work index Wi is defined in a Bond ball mill on the samples of standard size − 3327 0 mm
Kinetic grinding test approach to estimate the ball mill work index 345 Kinetic grinding Exactly 700 cm3 of 100 passing 335 mm material from each sample was progressively grounded in periods of 033 1 2 4 and 8 minutes
Work Index Ball Mill alluding to the grind ability list of Metals is utilized to demonstrate the granulating trouble of the material It is measured by a rule that to compute the work file ball plant in light of yield of every unrest of the factory after the material is ground to an adjusted state by the predetermined plan
Coarse Powder Mill Simple Compact Portable Convenient European Type Coarse Powder Mill can process soft or hard ores secondarily or finely whose compressive stress below 320Mpa It
This page is about grinding index iron ore Grinding Mill China grindability index iron ore Typical values of Bond ball mill work index for soft oxidised bond grinding work index for quartz stone rrcserin This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on around the bond grinding work index for
work indices for the AGSAG mill and ball mill can be reorganised as 7 and 8 where B''Wio and A''Wio are the corrected operating work indices and WAGSAG WBM are the respective power draw of AGSAG and ball mills Note that the ball mill operating work index is applied only on the portion that needs the additional grinding Q2
Mill grinding Wikipedia the free encyclopedia work index for iron ball millA typical type of fine grinder is the ball mill A slightly inclined or horizontal rotating cylinder is partially filled with balls usually stone or metal which W is the work index measured in a laboratory ball mill kilowatthoursSGS Bond Tests
Figure 1 Uniaxial compression test machine 3 STANDARD BOND TESTS The Bonds standard ball mill is used to determine the work index value of differ ent samples The Bond work index is defined as the kilowatthours per short ton required to break from infinite size to a
Starting from the firstorder grinding kinetics defined by means of the Bond ball mill this paper discusses a simplified procedure for a rapid determination of the work index by just two grinding tests The applicability of the simplified procedure has been proved on samples of copper and Iron
In the determination of ball mill work index 15 kg of representative ore at 100 335 mm is crushed to 100 − 335 mm Amtech 2006 The first grinding test is started with an arbitrarily chosen number of mill revolutions At the end of each grinding cycle the entire product is discharged from the mill and is screened on a test sieve
ground using the laboratory ball mill grinding machine 80 passing size for the iron ore marble and granite samples were obtained at 100μm sieve size for the feeds and products The work index of reference minerals marble and granite were used to calculate the work index of iron ore
The 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 Learn More
The Bonds standard ball mill is used to determine the work index value of differ ent samples The Bond work index is defined as the kilowatthours per short ton required to break from infinite size to a product size of 80 passing 100 µm If the breakage characteristics of a material remain constant over all size ranges the calcul ated work
Table of Bond Work Index by Minerals Mineral Processing Jun 19 2015 This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on around the world Iron ore unidentified 135 124 431 118 Read More
Test conducted on a Bond Index testing mill BicoBraun USA 700ml of sample milled for 100 revolutions New number of revolutions is calculated to produce fines equal to 135 of the total charge of the mill are the 80 passing size of the feed and product µm respectively
A BBMWI 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 The BBMWI is a measure of the resistance of the material to crushing and grinding It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions
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 335 mm Any screen size below 600µm can be used for the testwork depending on your requirements
Mill grinding Wikipedia the free encyclopedia work index for iron ball millA typical type of fine grinder is the ball mill A slightly inclined or horizontal rotating cylinder is partially filled with balls usually stone or metal which W is the work index measured in a laboratory ball mill kilowatthoursSGS Bond Tests Mining15 Apr