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The Bond rod mill work index is used to calculate the power requirement at intermediate size, i.e. from 12.5mm to about 1mm. The test has been mainly used for the design of rod mills or primary ball mills, but it can also be used along with the other Bond tests (BWI

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Work Index. Bond estimated the amount of wear in terms of kilograms per kWh based on the abrasion index, A;, i.e., Wet Ball Mill = kg kWh = 0.16(A i-0.015) 0.33; Dry Ball Mill = kg / kWh = 0.023A i 0.5; Replacement Ball Size. Rowland and Kjos proposed the use of their equation for the determination of the initial and replacement media size.

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Introduction A Bond Ball Mill Work Index 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 modied in 1961 (JKMRC CO., 2006). This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling, for estimating the energy

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bond s work index ball mill inner liners design. bond s work index ball mill inner liners design. Laboratory methods for combined testing of abrasiveness- bond s work index ball mill inner liners design,from the relatively simply laboratory procedures, designed and operated according to the . known as the Hardgrove Index (HGI) and Bond Work Index, Wi [3, 26, 27].

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Apr 05, 2020Wi= Bond laboratory work index (kWh/t) tph= SAG circuit throughput. P80= Ball mill circuit final grind = SGA throughput and transfer size in tph (metric tonnes per hour) Table 4.2.2.1: Grinding line 3 and 1-2. The J and K calculated values determine the specific energy calculated and it is used in equation 3, modified from Alruiz et al. (2009).

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2. Methods for assessing the energy consumption of the Bond Ball Mill are discussed 3. The average reduction in Work Index of HPGR products was 1.9 kWh/t 4. A similar magnitude of reduction was observed in the Size Specific Energy 5. Ball milling efficiency can vary significantly independently of HPGR operation Graphical Abstract

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The Bond ball mill work index test is thought to be additive because of its units of energy; nevertheless experimental blending results show a non additive behavior [18] The SPI(R) value is known not to be an additive parameter however errors introduced by block kriging are not thought to be significant . crushing bond index averageragdollnl.

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Jul 15, 2013See this useful summary Table of Bond Work Index by Minerals. For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um. The sample was received crushed appropriately for the ball mill

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Preface This is the final report of my master thesis "'eometallurgical estimation of comminution indices for porphyry copper deposit applying mineralogical approach" at Lule University of Technology.

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bond grindability inde ball mill size specifi ion. Bond Work Index Test Report Example 1 Mill Grinding . The Work Index is used when determining the size of the mill and 2.1. Bond Ball Mill Grindability The sample was crushed to passing 6 mesh 3.35mm from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

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Bond Work Index and Drop Weight Tests are more re sample, resources and time. However, the PLI value (Is 50 in MPa) can be correlated to the Drop Weight test parameters (A b) and the Bond Work Index (BW i). The Drop Weight and Bond Work Index parameters are required to model the crushing and grinding circuits. Therefore, the use of the

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Jul 17, 2013At the Olympic Dam mine in South Australia, plant performance variables of interest include the recovery of Cu and U 3 O 8, acid consumption, net recovery, drop weight index, and bond mill work index. There are an insufficient number of pilot plant trials (841) to consider direct three-dimensional spatial modeling for the entire deposit.

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Correlation between the Bond Work Indices calculated from three different method (HGI, Bond Ball Mill Work Index and Bond Rod Mill Work Index) was established. Appropriate correlation in the

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The Test of Standard Ball Mill Bond Grindability The Bond grindability tests were conducted with 3.35 mm of dry feed materials in a standard ball mill (30.5 cm 30.5 cm) following a standard procedural outline described in the literature (Yap Downloaded by [V. Deniz] at 07:58 05 May 2014 et al., 1982; Deister, 1987; Deniz et al., 1996; Deniz, 2004).

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