### Westgold Resources Ltd - Weir Group

Crushing Work Index (CWI) up to high 20s. Additionally, the crusher is run at very tight closed side settings, sometimes down to 8mm to help increase the ball mill throughput. While on site to replace an existing Warman® MC series slurry pump, the mine revealed their concerns regarding production issues caused by higher than

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Feb 25, 2015· Bond Work Index 𝑤 = 10𝑊𝑖 1 𝑝 − 1 𝑓 W = Power required in KWH to crush 1 short tonne ( 2000 pound) of material Wi is the work index of the material p is the 80 % passing size of the product f is the 80 % passing size of the feed 2/25/2015 6:58:05 AM 23 24.

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Crusher work index - infographicsdesigner.nl. calculate crusher power from work index chapter 3 particle technology size reduction calculate crusher power from work index,an ideal crusher would 1 have a large capacity 2 require a small power input per unit of product and 3 yield a, the work index, wi, is defined as the gross energy ...

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Crusher Work Index Tests | Manganese Crusher. Search crusher work index tests to find your need. Zenith Mining and Construction Machinery is a global manufacturer and supplier, We supply full crushing and … »More detailed

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May 22, 2013· impact crushing work index – Crusher South Africa CASE STUDIES ON THE EFFECT OF SAMPLE DIMENSIONS ON … parameter, the Bond low energy impact crushing work index (WiC). The sample feed size to the WiC test is …

Get Price### Bond Work Index - an overview | ScienceDirect Topics

The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and ...

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Jan 01, 2016· Estimation of Work Index for Crushers and Grinding Mills. The standard laboratory procedures for estimating work index can be divided into two categories. The first category involves tests on individual particles of rock and the second category deals with bulk rock material. A number of tests are required to get an idea of the rock strength.

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Jan 01, 2016· Motz suggested that when the work index is not known, a rough guide could be obtained from the expression (5.6) Work index = 0.0485 (Average Impact Strength) ρ S where the average impact strength is in J/m. Motz expressed the power requirements of gyratory crushers by the expression (5.7) P = 10 W i F 80 − P 80 F 80 P 80 (kW)

Get Price### CRUSHER WEAR PARTS -

8 - Crusher Wear Parts Reference Guide Crusher Wear Parts Reference Guide - 9 MATERIAL PROPERTIES TABLE WEAR PARTS OVERVIEW CRUSHABILITY CLASSIFICATION CRUSHABILITY (%) BOND WORK INDEX (KWH/T) LOS ANGELES VALUE UCS (MPa) Very Easy 50+ 0 - 7 27+ 0 - 90 Medium 40 - 50 7 - 10 22 - 27 90 - 150 Difficult 20 - 30 14 - 18 12 - 17 220 - 300

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Jan 01, 2016· capacity of crusher, 2. power consumption if the work index of the material is 12.5 kWh/t, 3. operating speed, 4. minimum level at which the feed should be maintained in the feed-hopper. 4.5. A cement manufacturer needed to produce lime at the rate of 140,000 t/year in …

Get Price### Jaw Crushers JW Series -

The JW Series of single toggle jaw crushers is designed with a tight crushing chamber nip angle and an aggressive crushing stroke to maximize productivity. The accompanying table gives typical outputs for our range of machines, based on dry, free flowing material with a crushing work index of 16 and a bulk density of 100 lbs/cu ft (1600 kg/cu m).

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Jan 01, 2016· The present trend is to replace secondary cone crushers by HPGR. The work at Polysius ... indicated that the Bond work index is not exactly a constant factor for a given ore. Otte reported an increase of W i from 13.9 to 15.6 kWh/t for a copper ore and 9.4–15.6 kWh/t for a gold ore.

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The work index is the comminution parameter that expresses the resistance of the material to crushing and grinding. In the case of the HammerMaster and LimeMaster crushers, McLanahan has designed the crusher with rotor dimensions, shaft and bearings to handle a variety of applications at a specific horsepower rating.

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A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, sand or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.

Get Price### Handbook of Crushing

moving surface of a crusher roll or jaw plate and the stationary plate surface at which point the material will be pinched. Angle varies with machine size and material lump size. Bond Work Index (BWI) — Kilowatt hour (kWh) per short ton required to reduce the material to 80% passing 100 microns. Breaker Block (Breaker Plate) — The steel anvil

Get Price### Comparison of UCS to Bond Work Indices

FIGURE 1: BOND CRUSHING WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS, MPa 10 20 30 40 50 WiC (metric) The scatter of the points in Figure 1 indicates no correlation between crushing work index and UCS.

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The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrial ...

Get Price### Kicks LawIt state that the work required for crushing a ...

Exercise 1(a) 1) A material consisting originally of 25 mm particle is crushed to an average size of 7 mm and requires 20KJ/kg for this size reduction. Determine the energy required to crush the material from 25 mm to 3.5 mm. Assuming: a) Ritttingers law b) Kicks law c) Bond law 2) A material is crushed in a blake jaw crusher such that the average size of particle is reduced from 50 mm to 10mm ...

Get Price### Power Calculation Of Impact Coal Crusher Based On Bond ...

work index of biomass crusher . The test determines the Bond Impact Work Index which is used with Bond's Third Theory of Comminution to calculate net power requirements when sizing crushers* It is also used to determine the required openside settings (jaw crushers and gyratory crushers) or closedside settings (cone crushers) for a given product size

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