Design Of Bond Rod Mill Work Index

Rapid determination of Bond rod-mill work index by modeling the Design and development of robotic hardware-in-the-loop simulation Generally, Bond work index is a common method for selecting comminution For comparing the standard Bond rod-mill

Commentary on the apparatus of the Bond rod mill Work Index by Alex Doll December, 2015 [email protected] The Bond “Third Theory” of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period when Bond (and his collaborators) were gathering the information to calibrate comminution models. The middle

1/1/2013· To calculate the Bond work index (W i) in a standard laboratory scale rod-mill, Bond derived the following equation: (1) W i = 62 P i 0.23 G i 0.625 10 P-10 F kw h sh t where F is 80% passing size of original feed, P is 80% passing size of circuit product and P i .

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.

Ball mill design requires a Bond work index, BWi, for ball mills at the correct passing size; SAG mill design requires an appropriate SAG test, for example, SPI (Chapter 5). Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral ( Chapter 12 ).

Here is a list presented in table form of Rod Mill Work Index as tested/presented by SME handbook of mineral processing, N.L Weiss Editor, N.Y. 1985.

Work index of 14.6 kWh/t, from the Bond Ball Mill is indicative of a hard ore. The hardness indexes are defined as follows: Property Soft Medium Hard Very Hard Bond WI (kWh/t) 7 9 9 14 14 20 > 20

The Bond Rod Mill Work Index is a measure of the resistance of the material to grinding in a rod mill. It can be used to determine the grinding power required for a given throughput of material under rod mill grinding conditions.

had one of Bond’s original design machines and similar results were obtained. As a consequence, metallurgists requesting impact work index test work should understand what equipment is being used and how the data should be interpreted. Bond rod mill work

The Bond rod mill work index is not as common as the Bond ball mill work index, and there are two different variations on the mill apparatus.The SAGMILLING.COM models expect a mill with a "wave liner", and is not compatible with mills using "smooth liners".

The Titan Bond Work Index Rod Mill is one-piece cast construction with integral wave liners of a form described by Bond. This mill is used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating production-size rod mills.

For comparing the standard Bond rod-mill work index and the new modeled method, work index (Wi) and produced fine particles in a cycle (Gi) for the four samples determined. The performed paired Student’s t-test results indicated that the Standard Deviation for Gi and Wi obtained by the shortened method are respectively 0.50 and 0.58 in respect of traditional Bond method.

Bond quantified the rod mill power draw as a function of the Work Index, capacity, and a series of correction factors: P M = W mtest,i F T Q F T = F 1 F 2 F 3 F 4 F 5 F 6

The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill [Bond 1961]. Simulations and modeling of this test

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 kilowatt-hours per short ton required to break from infinite size to a product size of 80% passing 100 µm. If the breakage the

Bond Work Indices. Bond rod mill work index determinations for the composites ranged from 14.2 kWh/tonne to 15.9 kWh/tonne, with an average of 15.0 kWh/tonne. Bond ball mill work index determinations for the composites ranged from 11.1 kWh/tonne to 13.5

For comparing the standard Bond rod-mill work index and the new modeled method, work index (Wi) and produced fine particles in a cycle (Gi) for the four samples determined.

12/12/2016· The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index

Bond Rod Mill Grindability: requires 25 kg of minus ½ in. material: $950 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