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What exactly is 'Work Index' and how can I make use of it? 'Work Index' is to measuring energy in size reduction what the 'meter' is to measuring distance. 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

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Dec 20, 2017 The work index is an empirical measure of the energy input required for grinding ores from a specific particle size to the design particle size. Bond designed the work index ball mill with strict dimensional and functional specifiions and developed the experimental methodology for determining the Work

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of ore grindability are the Bond Work Index. The Bond standard model to measure the performance of the ball mill. II. PREVIOUS WORK. Comminution in a mineral processing plant or, mill involves a sequence of crushing and. grinding processes. (Prasher .. parameters on the Grindability and bond index of bauxites And.

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Equation 1: Bond Ball Mill Work Index, JKTech, 2015. W is work input (kWh/t), Wi is Bond work index (kWh/t),. P80 is 80% passing size of the product (µm) and F80 is 80% passing size of the feed (µm). The Bond work index is equal to the work input required for ore particle size reduction from very large down to. 100µm, and

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was ground in various grinding times according to the Bond Ball mill approach to specify the work index values. bauxites, by means of bond work index. . calculate the ore work index values. Equation 5 is similar to Bond work index equation, but it has been defined for the foregoing calibrated bond ball mill [15]. F. P. G. P.

Chat Now### Download Datasheet Grinding Media Formular DOERING

B ball diameter in (mm). C. Cylpebs diameter in (mm). F size of mill feed in micron, 80 % of new mill feed passing. Wi. Bond Work Index (KWh/t). Cs per cent of critical Media size formula. Average Grinding Work Index (Wi) for different materials according to Bond: Material spec. gravity. Work Index. Basalt. 2,91. 19. Bauxite.

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For maximum energy efficiency, we recommend multiple stages of grinding. Compression crushers Impactors (horizontal type). Jaw 34. Gyratory 35. Cone 35. 25. Rod 100. Ball 1000. AG & SAG 5000. Impactors (vertical type). Regarding Work Index (Bond) for grinding, see 3:40. Grinding mills (tumbling type) Stirred

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Nov 25, 2016 UHMWPE. Ultrahighmolecularweight polyethylene. Wi. Bond Work Index. WiBM. Bond Ball Mill Work Index. WiC. Bond Crushing Work Index. WiRM Bauxite. 8.78. Gold ore. 14.93. Pyrrhotite ore. 9.57. Cement clinker. 13.45. Granite. 15.13. Quartzite. 9.58. Cement raw material. 10.51. Graphite. 43.56.

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rocks which are in general associated in bauxite mining such as Partially Altered Khondalite. (PAK) rocks, Partially with the Bond's work index, Hardgrove index and Brittleness tests on six typical rock samples . 94. 15.94. The materials weight of 700 cc volume sample with the balls was charged to the ball mill and.

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Here there are given tables from various sources for the Bond work index values of mining materials (ores, industrial minerals and rocks). These work Prepared by K. G. Tsakalakis, Professor NTUA. Table of Materials Reported by Fred Bond1. 2. 1. Material. Number Tested. Andesite Barite Basalt Bauxite Cement clinker

Chat Now### Comminution circuits for compact itabirites SciELO

This work makes a comparison between comminution circuits for compact Itabirites from the Iron Quadrangle. The circuits 1.1 Bond Work Index: Determination of Ball Mill Work Index using Bond methodology (). The test 3 Pilot tests using ball mill and SAG mill circuits to obtain the energy consumption. For CB and

Chat Now### Alternative Approaches for Determination of Bond Work Index on

rocks which are in general associated in bauxite mining such as Partially Altered Khondalite. (PAK) rocks, Partially with the Bond's work index, Hardgrove index and Brittleness tests on six typical rock samples . 94. 15.94. The materials weight of 700 cc volume sample with the balls was charged to the ball mill and.

Chat Now### study of grinding characterstics of bauxite ore International Journal

P = power, watts. Wi. = work index, kilo watt hr/ton. Dpa = average diameter of the feed particle, cm. Dpb. = average diameter of the product particle, cm. Time of grinding in ball mill was studied at different intervals of time with three different feed sizes, 100 balls of 2.54 cm size, the speed of the mill at 66 rpm and the weight of

Chat Now### Download Datasheet Grinding Media Formular DOERING

B ball diameter in (mm). C. Cylpebs diameter in (mm). F size of mill feed in micron, 80 % of new mill feed passing. Wi. Bond Work Index (KWh/t). Cs per cent of critical Media size formula. Average Grinding Work Index (Wi) for different materials according to Bond: Material spec. gravity. Work Index. Basalt. 2,91. 19. Bauxite.

Chat Now### Studies on Batch Grinding of Bauxite Ore in Ball Mill International

Index Terms—Grinding, Ball Mill, Bauxite Ore, Specific. Surface Area, Energy Consumption. I. INTRODUCTION. Many researchers are working in different fields for a better society. The cost effectiveness plays a vital role in the better research. Mineral Engineers are crucial for any product development as the raw material

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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.

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Jun 19, 2017 Table 23: Bond ball mill work Index (sample ID 4, 8, 11, 14, 16 and 18 comes from SDP) . .. The bond ball Mill Work Index provides a measure of energy required to grind a mineral in a ball mill. It is .. different mechanical properties of some Saudi ores (bauxite, kaolinite, granodiorite, magnetite, granite,.

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Here there are given tables from various sources for the Bond work index values of mining materials (ores, industrial minerals and rocks). These work Prepared by K. G. Tsakalakis, Professor NTUA. Table of Materials Reported by Fred Bond1. 2. 1. Material. Number Tested. Andesite Barite Basalt Bauxite Cement clinker

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ball mill grindability. The test mesh used was 100 mesh (85. μm) [1416]. The Bond work index Wi was calculated from Equation (2). Wi = 44.5/(P1)0.23 X (Gbp)0.82 Bauxite. Kaolinite. Granodiorite. Magnetite. Feldspar. Granite. Quartz. Figure 3: Effect of hardness of the different studied materials on Bond work index.

Chat Now### Review on Simulation of Work Index Determination (PDF Download

Dec 20, 2017 The work index is an empirical measure of the energy input required for grinding ores from a specific particle size to the design particle size. Bond designed the work index ball mill with strict dimensional and functional specifiions and developed the experimental methodology for determining the Work

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