text: Here is the old AllisChalmers Bond Work Index Grindability Test Procedure The standard feed is prepared by stage crushing to all passing a 6 mesh sieve, but finer feed can be used when necessary It is screen analyzed and packed by shaking in a 1000cc graduated cylinder, and the weight of 700 cc is placed in the mill and ground dry at 250 per cent circulating load The mill is 12 in x 12
  01/03/1983· Powder Technology, 39 (1983) 261 274 A Comparison of the Bond Method for Sizing Wet Tumbling Ball Mills with a SizeMass Balance Simulation Model L G AUSTIN and K BRAME Department of ;t1ineral Engineering Mineral Processing Section Pennsylvania State University, Uniaersity Park PA 16802 (USA) (Received March 11, 1982) 261 SUMMARY A
  Bond Test WI's (kWh/t): Rod Mill: Ball Mill: 95 kWh/t8 9 kWh/t Bond Standard Circuit Work Index: Assume the rod mill Work Index of 95 applies from the actual rod mill feed sizeof 19,300 mµ (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod µ mill (circuit) product size of 1,000 µm W1 = 95 x [(10 / √ 1,000) – (10
  19/10/2017· There is a mathematical solution to this problem — the Bond formula It uses to help determine the grinding media optimal size must be loaded into the ball mill for proper operation ensure The calculation formula is below: B — the grinding balls diameter, mm; A — the correction factor (for grinding balls A = 20,17; for cilpence A = 18,15); F — the feedstock grain size in 80% of the
  astm ball mill work index standard kiranfoundation
  ASTM D3802 16 Standard Test Method for BallPan Hardness get more Correction of Bond Ball Mill Work Index Test for Closing
  As with our standard range of ball and rod mills, the Essa® Bond Index Ball Mill and Bond Index Rod Mill are supplied standard with a barrel and rotating yoke assembly and the electric motor drive mounted on a stand alone bench, funnel and screen These machines will be of essentially the same physical arrangement and size as our standard range but with the customised features required to
  The Bond ball mill work index is one of the most commonly used grindability tests in mining, An opencircuit Minnovex ModBWI test or a SAGDesign ball mill work index with nonstandard feed would be entered as "true" (or "1" in a batch upload of test results) synthetic indicates whether this is a real test result, or just a synthetic one that should only be used for modelling If this
  3 STANDARD BOND TESTS The Bond's 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 index would be expected to
  21 The test of standard ball mill Bond grindability The standard Bond grindability test is a closedcycle dry grinding in a standard ball mill (305x305 cm) and screening process, which is carried out until steady state condition is obtained This test was described as follow (Bond&Maxson 1943, Yap et al
  • Wet, closed circuit ball milling to final P80 • 26 m inside diameter mills 8 2/20/2014 5 The Standard Bond Circuit Coarse Ore Bins Fine Ore Bins Screen Crushing Screen Classification Rod Mill Ball Mill Closed circuit crushing to 16 mm Open circuit 8' dia rod mill to 1 mm Closed circuit 8' dia ball mill to P80 um The ore Test Work Index = Circuit Operating Work Index 9 The
  standard Bond ball mill was implemented To estimate/predict the amount of consumed energy, and SAG mill feed hardness, Bond equation or Bond's laboratory work index cannot be used, thus a Starkey mill was used to measure SAG mill power index [5] To determine efficiency of mills and size classification equipment, three different sampling campaigns from comminution circuit were done on