bond ball mill work index for pure quartz

Determination of Work Index of Enyigba Lead Ore, Ebonyi State ...

This study used quartz as a reference ore via a comparative method to determine the ... Bond''s work index of Enyigba (Nigeria) ore was found to be 14.37kwh/short ton. ... A pure sedimentary origin was proposed (Grant, 1971; .... The test and the reference ores from the laboratory ball mill machine were sized and each sieve.

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View/Open - University of Pretoria

Autogenous (AG) milling is utilised around the world for first stage particle size reduction. The system exhibits highly non-linear ... 2.8 Bond Work Index . ...... 56.70 Quartz. 13.57 .... Pure ball mills operate at a higher steel ball charge of > 35 %.

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annual report - Athena Resources

Magnetite represents the major iron-bearing mineral, while quartz represents the .... Bond Ball Mill Work Index recorded a value of 16 5 kWh/t (test aperture of .... boundary of the relatively pure magnetite and not within the magnetite itself .

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January 18, 2004 Crystallex''s Las Cristinas Gold Project

Jan 18, 2004 ... On a microscopic scale, gold can be found as free grains in quartz and as .... The Bond ball mill work index data (metric) for CSB and CLB are 15.3 ..... Data show that the CSD for pure SAPS is about 56% solids which is far...

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Meadowbank Mine Process Plant Throughput Increase - CEEC

plant design throughput as well as to evaluated the mill capacity increasing. The process plant ..... Figure 9: Meadowbank Pits ore bond ball mill work index. 322...

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Main research and experimental test works, performed by ZAO ...

Gaiskoye and Letnee deposits ores, Bond Work Index was determined with regard to ... semiautogenous and ball grinding mills. ..... Mills'' drums liners with overlay lifters, suitable only for operation in pure .... and scheelite-quartz-amphibole.

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Bond Work Index Tables (Wi) - Scribd

Here there are given tables from various sources for the Bond work index values of mining materials (ores, industrial minerals and rocks). ... 5. 1. Material. Number Tested. Quartzite Quartz Rutile ore. Shale Silica sand ... Ball Mill Optimization.

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Byro - Athena Resources

Magnetite represents the major iron-bearing mineral, while quartz represents the major gangue mineral. .... Index (CWi) recorded average value of 15.5 kWh/t; Bond Ball Mill Work Index ... Bond Rod Mill Work Index recorded a value of 8.3 kWh/t. .... of the discrete quartz grains forming at the boundary of the relatively pure...

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Mill Circuit Pump Manual - Weir Minerals

A typical SAG mill with a smaller conventional ball mill shown in the background ... Examples: quartz and sulfur. Malleable: A .... Copper coming from minerals that contain pure metal in the native ..... of P80. For this method to work, index WI is used. The .... rial was subjected to JK breakage and Bond Ball Mill. Work Index...

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Comparative Analysis of Grindability of Iron- ore and Granite

measure ore grindability is the Bond work index (Wi). This measures ... Size analysis of the ball mill for the same duration feed and discharged for .... Qtz – Quartz, Plg – Plagioclase Feldspar, ..... Journal of Pure and Applied Sciences, vol. 6 No.

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