W is the work index measured in a laboratory ball mill (kilowatthours per metric or short ton) P 80 is the mill circuit product size in micrometers; F 80 is the mill circuit feed size in micrometers. Rod mill. A rotating drum causes friction and attrition between steel rods and ore particles.

Get PriceComparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, ... • Bond Rod Mill Work Index • Bond Abrasion • Specific Gravity, 2 methods ... Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project ...

Get PriceCALCULATION OF THE REQUIRED SEMIAUTOGENOUS MILL POWER BASED ON THE BOND WORK INDEXES O. I. SKARIN, ... — rod milling work index RWI; for finer particles — ball milling work index BWI (Table). These indexes are readily obtained using the ... feed for the rod mill, 10000 μm in accordance with Table.

Get Pricerod mill work index classification • The Bond Work Index equation • Ore test WI Classification Rod Mill Ball Mill THIS IS THE REFERENCE BASIS FOR ALL WORK INDEX EFFICIENCY Bond Rod Mill Index Test JKTech Measuring ore grindability in rod mills.

Get PriceJan 02, 2013· Index Test, The Bond Rod Mill Work Index Test and the Bond Ball Mill Work Index test. All of these tests are done in a dry environment and are empirically calibrated … All of these tests are done in a dry environment and are empirically calibrated …

Get Pricelaboratory xmb rod mill applied to wet method milling ore Laboratory Ball Mill For Bond Work Index Procedure And Method . Description XMQ Series Cone Ball Mill is a lab grinding equipment for wet fine grinding of ore 150 × 50 Cone Ball Mill also can be used for dry grinding.

Get PriceIt depends on the rod mill work index and on the desired product size. It will also depend on if you are grinding open or closed circuit and wet or dry. And if you have any stages of grinding, crushing, or classification before it! It will generally be between 10 mm and 50 mm.

Get PriceBond Rod Mill Index Test. Measuring ore grindability in rod mills. 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. It is a ''locked cycle'' test conducted in closed ...

Get PriceThe Bond ball mill work index is one of the most commonly used grindability tests in mining, and is often referred to as the Bond work index.. The test is a ''lockedcycle'' test where ground product is removed from test cycles and replaced by fresh feed.

Get PriceRod mills normally carry 35 to 65% rod charge by volume. The limits on charge level are (1) keeping the feed end trunnion open so that feed will get into the mill, and (2) keeping the rod charge low so rods will not work their way into discharge openings where they can cause rod tangling.

Get PriceMineral processing can involve four general types of unit operation: ... The primarily used equipment in crushing arejaw crushers, gyratory crushers and cone crushers whereas rod mills and ball mills, closed circuited with a classifier unit, are generally employed for grinding purposes in a mineral processing plant. ... These work in similar ...

Get PriceTumbling mills, eg AG, SAG, rod and ball mills Conventional reciprocating crushers, eg jaw, gyratory and cone ... can be determined using the data generated by a conventional Bond ball mill work index test (M ib ... USING THE SMC TEST® TO PREDICT COMMINUTION CIRCUIT PERFORMANCE ...

Get PriceBond Work Index Tests. Grinding Solutions offers a range of Bond Work Index Testing from crushability and abrasion to ball and rod mills. For more information on the tests please see below: Bond Low Energy Impact Test. The Bond LowEnergy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index.

Get PriceThe Titan Bond Work Index Rod Mill is onepiece 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 productionsize rod mills.

Get PriceAt least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill. The Rod Mill Work Index (RWI) is used for particle size determination in a size range from 25 mm down to mm whereas Ball Mill Work Index (BWI) is used for the range from mm down to 100 µm.

Get PriceThe Bond Index Ball Mill / Rod Mill BT 100 XL is used in the planning of ... in a size range from 25 mm down to mm whereas Ball Mill Work Index (BWI) is used ... Material feed size*, < mm with ball module / mm with rod module.

Get PriceThe hammers are set to fall again from a higher drop position to input enough energy to break the rock. This is done 10 times to obtain 10 breaks and the WI (kWh/t) = x Impact Crushing Strength / Specific Gravity of the sample. ** Find a referential Rod Mill Work Index Table here.

Get PriceThis 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 closedcircuit, dry grindability test, is run in a standard rod mill, and can be performed at sizes ranging from mm to …

Get Price• Bond Rod Mill Work Index ... Upper Ore Zone Trench 1 7 ... bond\''s rod mill for work index India oxide type gold ore bond\''s rod mill for work index is one of the most commonly used hydraulic,gravel quarry,highway construction production of industrial sand ...

Get PriceWork Index, which is discussed in the next section. ... as ball and rod mills. Very fine grinding, to sizes less than 10 µm, requires high energy and attrition mills are often used. These have ... 116 Crushing and classification ...

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