How To Bond Index In Rock Crusher

FIGURE 4: BOND CRUSHING WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH (highlighting three rock types) Figure 4 displays Wi C and UCS values separated by the major rock types from a single African mine. The three rock types do show a mild correlation between crushing Work Index and UCS (R² values between 0.1 and 0.4).

This is or was used by to acquire the Impact (AKA Crushing) Work Index for sizing crushers. Use this in complement to the Bond Crushing Work Index Procedure. Another Summary Table of various Impact Work Index by Rock or Mineral Type (/metric tonne). Find a referential Rod Mill Work Index Table here.

Work index is the relation between the SEC and the amount of breakage in an ore. The most common form of this relationship is given as Equation 1, and is often referred to as "Bond's …

The SMC Test is a laboratory comminution test which provides a range of information on the breakage characteristics of rock samples for use in the mining/minerals ... Only relatively small quantities of sample are required and can be re-used to conduct Bond ball work index tests. ... b and ta as well as the JK crusher model's t10-Ecs matrix ...

Bond Crusher Work Index - greenrevolution.in. Bond Crushing Work Index It is used to calculate actual crusher power Impact and Crushing work index Calculate the ... how to calculate the price of stone crushing plant

Typical hard-rock crushers like jaw, gyratory and cones break rock by nipping the ore between a fixed/stationary and a moveable wear-resistant surface/liner. ... The Bond' Crushing Work Index is common to calculate the …

The crushing energy in mineral processing industry is usually determined by empirical Bond's index, regardless of the mechanical properties of a rock. Although several attempts have been made to obtain the comminution energy based on theoretical approaches, it would be appropriate to examine this relation based on physical concept.

According to Chakrabarti, the work index of an unknown rock material can be obtained by first crushing the rock to less than 3327 μm, avoiding over crushing by using low energy impact or …

The Bond ball mill work index (Wi BM, or BWi) conducted from a feed size of approximately 2 mm to a product size on the order of 100 µm. The Bond rod mill work index (Wi RM, or RWi) conducted from a feed size of …

By referring to equipment manufacturer's bulletin on crushers, Fig. 1, a crusher producing 80% passing 3/4″ requires a close side setting of approximately 5/8″. Since the selected crusher capacity must be in excess of 143 tons per hour, the next higher figure (159) is chosen. The 159 indicates a 548 crusher size with 1″ eccentric throw.

6 L.M. Tavares & M.A.C.W. da Silveira The Bond work index has also been used, in conjunction with empirical relationships, to estimate capacity factors of jaw, cone and gyratory crushers

The kilowatt-hours per tone (kWh/t) will work out your work index. The number of kittowatts consumed in a hour divided by the tonnes of rock gives you your work index. Remember, the higher the Work Index the more work required to crush the rock. This will impact the equipment chosen for your project.

Although not as popular as the Bond ball mill or the Bond rod mill work indices, the impact work index, also called Bond crushability index, continues to be much used for crusher selection.

Size reduction and crusher modeling theories 9 1954 Fred Bond's WI 1954 Gauldie 1970 Bill Whiten 1991 Ted Bearman 9. Why a Crusher Model? MVI_0980.AVI. Objectives of Modeling ... Crusher Performance Rock Material Pressure Response Wear Size Reduction. Crusher Model The compressive crushing process can

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 open-side settings (jaw crushers and gyratory crushers) or closed …

The crushing energy in mineral processing industry is usually determined by empirical Bond's index, regardless of the mechanical properties of a rock. Although several attempts have been made to obtain the comminution energy based on theoretical ... Roll or Gyratory crushers, the rock particles are mainly crushed as single individual particles ...

The crushing work index (CWi) is an indicator characterizing the energy amount (kW * h / t) needed to destroy single pieces of material with a relatively large size range (-75 + 50mm). The impact on such material …

sbm how to bond index in rock crusher... Find file Blame History Permalink sbm · 34e52685 changjiangsx authored Nov 04, 2022. 34e52685 Loading ...

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The Rock Crusher is a Refinement Building. It turns Raw Minerals and Metal Ores into Sand and inefficiently produces Refined Metal. The Rock Crusher consumes 240 W of Power. It requires Duplicant operation. It refines materials 100 kg at a time. 50 kg of material gets turned into Sand and 50 kg to the corresponding Refined Metal. One operating cycle takes 40 seconds, …

This is the metric that most people mean when they describe a "Bond work index". ... work index of an industrial crusher from a laboratory test using twin pendulums. A specimen of rock is placed ...

Roll crushers consist of two or more adjacent rolls placed parallel to each other and rotated in opposite directions. Single roll crushers are also available which rotate a single roll against a fixed breaker plate. Mineral or rock particles placed between the rolls are nipped and then crushed as they pass between the rolls.

The basic work index equation is: W = 10 Wi/√P – 10 Wi/√F(1) where W is the work input required in kilowatt hours per short ton to grind from 80% passing F microns to 80% passing P microns, and Wi is the work index, or the grinding resistance parameter. It represents the energy input required in kilowatt hours to …

by calculating an operating work index where the SEC (E), feed size (F80), and product size (P80) are measured, and the work index (Wi) of the operating industrial circuit is then calculated. The operating work index is useful for performing comparisons of energy efficiency that are corrected for different amounts of size reduction. 2.

Crusher Design. The approximate capacity of a jaw crusher for hard rock application at a typical setting may be obtained by multiplying the width by 10 to get tonnes per hour. For example, a 48 by 60 crusher will have a capacity in the order of 600 tph when crushing ore in a hard rock mine. Source: Jack de la Vergne

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911 Metallurgist can enter the scene and see what you have become blind to. We can fix issues in ways you never thought possible. Our fresh eyes will open new opportunities for your plant. Each mineral processing plant has varied ore types, mining equipment, (crusher, ball mill, flotation, tailings), and management (operating) philosophy.The evaluation and prioritization of variables …

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...

Two intact rock properties, tensile strength (TS) and Bond work index (BWI), were correlated with the PR data to predict these efficiencies in crushing and grinding, respectively. Because of the complexity of the raw MWD data and effects of various disturbances, the MWD data was preprocessed and normalized to achieve a representative PR value ...

A new approach to the calculation of bond work index. Smith and Lee (1968) compared the data obtained by the standard Bond test and the data from the open grinding cycle, i.e. the first grinding cycle of the standard Bond test.