Ball Mill Work Index

2015 kinetic grinding test approach to estimate the ball mill work index physicochem.

Ball mill work index. Below describes in general terms the bond work index procedure used by a professional metallurgical testing laboratory. The laboratory test results are used to check the efficiency of commercial operations and to compute the proper machine sizes for new installations. The second test a bond work index determination results in a specific energy value net hp hr t from an empirical formula. Work index ball mill alluding to the grind ability list of metals is utilized to demonstrate the granulating trouble of the material.

First a jar mill grindability test requires a 5 lb. The test requires calibration against the standard bond ball mill work index test to estimate the work index. 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 stage crushed to 100 passing size of 3 35 mm. Quick method for bond work index approximate value determination.

The work index calculations across a narrow size range are conducted using the appropriate laboratory work. It is a locked cycle test conducted in closed circuit with a laboratory screen. 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. This grindability test or bond ball mill work index procedure is used to determine the bond work index of minus six mesh or finer feed ore samples.

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. These equation application methods are used to process 1 2 ore samples in a ball mill using a standard ball charge. It can be used at mesh sizes from 65 to 200 mesh normally 100 mesh.

2 kg sample and produces a direct measured specific energy net hp hr t to grind from the design feed size to the required product size. Jktech laboratory services bond ball mill index test brmwi a bond ball mill index test bbmwi is a standard test for determining the ball mill work index of a sample of ore. The work index wi can be determined from plant operations and from laboratory ball mill grindability rod mill grindability and impact crushing tests. Similar to a comparative work index this test is an open circuit dry batch grindability test run in the standard bond ball mill for a set time.