Index Test, The Bond Rod Mill Work Index Test and the Bond Ball Mill Work . an overview of the small-scale tests available to characterize ore The world widely relies on the ball mill work index for the design and analysis of The Bond Rod Mill Grindability Test is performed similarly to the ball mill test.Free Service
The Bond ball mill work index is one of the most commonly used grindability tests in mining, and is often referred to as the Bond work index The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed.Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills . Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill.Rod milling, is fitted to a tumbling test, referred to as the Bond rod mill work index (WiRM, or RWi). The apparatus used to determine this work index was described in 1943 by Bond Maxton and a slightly different apparatus was described by Bergstrom in 1985.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.
WiRM Bond Rod Mill Test Work Index (kWh t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at the drive pinions. 3.KEYWORDS Work Index, Work Index Efficiency, Bond Work Index testing 4.INTRODUCTION AND BACKGROUND.This test determines the Bond Rod Mill Work Index, which can be used with Bond’s Third Theory of Comminution to calculate net power requirements of sizing rod mills. The test is a closed-circuit, dry grindability test, is run in a standard rod mill, and can be performed at.Internationally accepted mineral metallurgical standard test procedures to determine the physical properties of ores include the Bond ball mill work index and the Bond rod mill work index. These are empirical indices determined by close circuit grindability tests developed by F.C.Bond in the mid 1930’s.The Bond Work Index for Rod Mill is a special equipment for testing Bond rod mill work index. Simple lab test can choose rod mill by power method or judge the effects of material properties change to the rod milling process or the operation condition of rod mill by using this equipment. From 1980s, the company developed the equipment and.
Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a.This test was originally devel- tion method of the Bond rod-mill work index. On the basis of their oped in the mid 1930s by F.C. Bond. Though, it was altered in suc- research, a new method was developed to calculate the Bond rod- ceeding years, it has essentially remained unchanged since 1961 mill work index.The standard Bond Rod Mill Work Index test procedure is firstly to stage crush the feed to pass 127 mm and size a representative sample The test then involves a series of batch grinds in a standard Bond rod mill A Bond rod mill is 0305m by 0610m with wave liners of a form described by Bond which runs at 40rpm and tilts as described below.The standard Bond Rod Mill Work Index test procedure is firstly to stage crush the feed to pass 12.7 mm, and size a representative sample. The test then involves a series of batch grinds in a standard Bond rod mill. A Bond rod mill is 0.305m by 0.610m, with wave liners (of a form described by Bond), which runs at 40rpm and tilts as described below.
Grindability Index Test Method Procedure - 911 Metallurgist. The proposed grindability test uses the Bond standard test mill and a quantity . The Bond Work Index is determined by a standardized procedure in which the namely one in which wet grinding is done in a ball mill.Bonds Rod Mill For Work Index. Commentary on the apparatus of the Bond rod mill work index Apr 27 2016183 rod milling is fitted to a tumbling test referred to as the Bond rod mill work index WiRM or RWi The apparatus used to determine this work index was described in 1943 by Bond amp Maxton and a slightly different apparatus was described by Bergstrom in 1985.The Bond work index is relatively consistent anywhere in the world, and should be very repeatable . BOND ROD MILL GRINDABILITY The Bond rod mill grindability test is performed similarly to the ball mill test. The feed sample is stage-crushed to ” (12.5mm) and the test is run under a 100 circulating load. The test can.Bond Test WI’s (kWh t) Rod Mill Ball Mill 9.5 kWh t.8 9 kWh t . Bond Standard Circuit Work Index Assume the rod mill Work Index of 9.5 applies from the actual rod mill feed sizeof 19,300 m (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod.