# bond rod mill index test

##### Bond Work Index Procedure and Method

This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge. Below describes in general terms the Bond Work Index Procedure used by a Professional Metallurgical Testing Laboratory.

##### Bond Rod Mill Index Test JKTech

It is a 'locked cycle' test conducted in closed circuit with a laboratory screen. Sample Requirements: A minimum of 20 kg of material crushed to nominally minus 19 mm is preferred. JKTech would stage crush the sample to minus 12.5 mm, as required for the Bond Rod Mill Work Index test feed.

##### Bond Tests Mining SGS

Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill.

##### Bond Index Ball Mill / Rod Mill BT 100 XL RETSCH

The Bond Index Ball Mill / Rod Mill BT 100 XL is used in the planning of crushing plants. Retsch supplies a range of bond index testing equipment.

##### JKTech Laboratory Services JKTech JKTech

The standard Bond Rod Mill Work Index test procedure is firstly to stage crush the feed to pass 12.7 mm, and size a representative sample. The test then involves a series of batch grinds in a standard Bond rod mill. A Bond rod mill is 0.305m by 0.610m, with wave liners (of a form described by Bond), which runs at 40rpm and tilts as described below.

##### Testwork: Bond rod mill work index SAGMILLING.COM

Bond rod mill work index results from Australian laboratories with smooth liners should not be used in the SAGMILLING.COM models. The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed. The test must achieve a

##### Bond Rod Mill Work Index Equipment & Apparatus Review

The first problem comes from the equation derived by Bond to calibrate a rod mill work index to the parameters of the rod mill tumbling test. The term in the calibrated formula that is affected by the liner is the grams (therefore, the energy) evolved per revolution of the laboratory mill.

##### Bond Work Index Tests Grinding Solutions Ltd

Bond 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 Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index.

##### Simulating the Bond rod mill grindability test Request PDF

The Bond rod mill grindability test is a widely used tool to estimate the response of ores to rod milling. However, the mass of ore required to conduct the test, which can typically vary from

##### Comminution Hazen Research

This 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 closed-circuit, dry grindability test, is run in a standard rod mill, and can be performed at

##### Simulating the Bond rod mill grindability test ScienceDirect

The Bond rod mill grindability test is a widely used tool to estimate the response of ores to rod milling. However, the mass of ore required to conduct the test, which can typically vary from about 8 to as much as 20 kg, may represent a challenge when sample availability is critical.

##### Comminution AMML

The crushed feed sample is subject to a grinding by a standard ball mill. The BBWi is calculated after achieving a consistent IPP of ~28%. Bond Rod Work Index (BRWi) The sample is staged crushed to 100% passing 12.5 mm. The crushed feed sample is subject to a grinding by a standard rod mill. The BRWi is calculated after achieving a

##### Testwork: Bond ball mill work index SAGMILLING.COM

The 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 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed.

##### SAG Mill Testing Test Procedures to Characterize Ore

carried out with the Bond ball mill and rod mill grindability tests. As discussed earlier in this paper, it is important in this case to match the reduction size of the test to that desired from the industrial mill. As such, primary ball mills should be designed with the rod mill work index

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

FIGURE 5: BOND ROD MILL WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS (MPa) 5 10 15 20 25 30 35 WiRM (metric) The lack of fit observed relating the crushing Work Index was expected to carry over to the other Bond Work Indices. Figure 5 displays the plot of rod mill Work Index (Wi RM) versus UCS. These

##### determination of Bond rod-mill work index by

The experiment results confirm that the introduced method is a rapid and accurate method to determine the Bond rod-mill work index. The Bond rod-mill work indices obtained by this method were compared to those of standard Bond work indices with having different test-sieves.

##### Bond Abrasion Index Test Machine YouTube

Mar 29, 2017· The Metso abrasion test is mainly used to assess hammer wear in an impact type crusher (e.g. a hammer mill), hence the much higher rotational speed, whereas the Bond abrasion test is

##### GMSG GUIDELINE: DETERMINING THE BOND EFFICIENCY OF

Bond Test WI’s (kWh/t): Rod Mill: Ball Mill: 9.5 kWh/t.8 9 kWh/t . Bond Standard Circuit Work Index: Assume the rod mill Work Index of 9.5 applies from the actual rod mill feed sizeof 19,300 mµ (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod µ

##### Orway Mineral Consultants Canada Ltd. Mississauga, ON

Bond’s approach consists of determining the ore hardness characteristics, or Work Index (Wi) via standardized laboratory testwork. The full suite of Bond comminution tests provide the Ball Mill Work Index (BWi), the Rod Mill Work Index (RWi), the Crusher Work Index (CWi) and the Abrasion Index

##### USING THE SMC TEST® TO PREDICT COMMINUTION

work index covering grinding of fine particles is labelled M ib (Morrell, 2008). M ia values are provided as a standard output from a SMC Test® (Morrell, 2004a) whilst M ib values can be determined using the data generated by a conventional Bond ball mill work index test (M ib is NOT the Bond ball work index). M ic and M ih values are also

##### CORRELATION BETWEEN BOND WORK INDEX AND

forces. The Bond grindability test has been widely used for predictions of ball and rod mill energy requirements and for selection of plant scale comminution equipment [5]. In most mining operations, blasting, crushing, and grinding are necessary parts of the comminution process. Quick and accurate methods for estimating the respective

##### A public Database of tumbling mill grindability

• WiRM p80 The test product 80% passing particle size, µm. • WiRM gpr The test average grams per revolution of the final cycles, g/rev. • WiRM The Bond rod mill work index determination, metric units. The rod mill work index table includes results from laboratories whose apparatus does not conform to Bond's original

##### What Can Go Wrong in Comminution Circuit Design?

bond rod mill work index on at least one sample tested, and • large variations in abrasion index and crushing work index were due to variations in the test method across the laboratories. Bond crushing (impact) work index In general, the impact or crushing work indices (CWi) calculated from test work carried out on machines conforming to Bond’s

##### Bond Rod Index Mills Products Kefid Machinery

Bond Rod Index Mills. 250tph river stone crushing line in Chile. 200tph granite crushing line in Cameroon. 250tph limestone crushing line in Kenya. 250tph granite crushing line in South Africa. Kefid 120tph granite crushing line in Zimbabwe. Vertical grinding mill

##### GMSG GUIDELINE: DETERMINING THE BOND EFFICIENCY OF

Bond Test WI’s (kWh/t): Rod Mill: Ball Mill: 9.5 kWh/t.8 9 kWh/t . Bond Standard Circuit Work Index: Assume the rod mill Work Index of 9.5 applies from the actual rod mill feed sizeof 19,300 mµ (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod µ

##### CORRELATION BETWEEN BOND WORK INDEX AND

forces. The Bond grindability test has been widely used for predictions of ball and rod mill energy requirements and for selection of plant scale comminution equipment [5]. In most mining operations, blasting, crushing, and grinding are necessary parts of the comminution process. Quick and accurate methods for estimating the respective

##### A public Database of tumbling mill grindability

• WiRM p80 The test product 80% passing particle size, µm. • WiRM gpr The test average grams per revolution of the final cycles, g/rev. • WiRM The Bond rod mill work index determination, metric units. The rod mill work index table includes results from laboratories whose apparatus does not conform to Bond's original

##### What Can Go Wrong in Comminution Circuit Design?

bond rod mill work index on at least one sample tested, and • large variations in abrasion index and crushing work index were due to variations in the test method across the laboratories. Bond crushing (impact) work index In general, the impact or crushing work indices (CWi) calculated from test work carried out on machines conforming to Bond’s

##### Bond Rod Index Mills Products Kefid Machinery

Bond Rod Index Mills. 250tph river stone crushing line in Chile. 200tph granite crushing line in Cameroon. 250tph limestone crushing line in Kenya. 250tph granite crushing line in South Africa. Kefid 120tph granite crushing line in Zimbabwe. Vertical grinding mill

##### Procedure for determination of ball Bond work index in the

The Bond ball mill grindability test is run in a laboratory until a circulating load of 250% is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to

##### DEVELOPMENT OF COMMINUTION TEST METHOD FOR

grindability test method, where the test is done with the Outotec Mergan mill, but the test results can be scaled to estimate Bond work index for the sample. Results show that there is indeed a correlation between the two grindability test methods.

##### determination of Bond rod-mill work index by

Generally, Bond work index is a common method for selecting comminution equipment as well as estimation of grinding efficiency and calculating required power. In the current research, a simple, fast and accurate procedure is introduced to find the rod-mill work index based on the conventional Bond work index.

##### Bond Work Index Of A Mill beckers-muehle.de

Testwork Bond Rod Mill Work Index. The Bond rod mill work index is not as mon as the Bond ball mill work index and there are two different variations on the mill models expect a mill with a wave liner and is not patible with mills using smooth liners. Investigating Of The Effect Of Ore Work Index And Particle

##### Bond Work Index Rod Mill Titan Process Equipment Ltd.

Oct 03, 2015· The Titan Bond Work Index Rod Mill is one-piece 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 production-size rod

##### Simulating the Bond rod mill grindability test, Minerals

Jan 01, 2012· Simulating the Bond rod mill grindability test Simulating the Bond rod mill grindability test Tavares, Luís Marcelo; de Carvalho, Rodrigo M.; Guerrero, Juan Carlos 2012-01-01 00:00:00 Graphical abstract A procedure based on the simulation of batch grinding allowed predicting the Bond rod mill work index of ores within no more than 10% of deviation in comparison to the

##### A New Approach to the Calculation of Work Index and the

The mill power is = 22.5 Watts, calculated by (6). Fi- P nally the product is wet screened to find the size d80. 2.4. Rod Mill Semi Continuous Process The same mill is used for the semi continuous grinding tests which is similar to the Bond test but with the exist- ing mill of known power. After time the mill

##### Mineral Comminution fine / ultrafine grinding

Comminution. Grinding Solutions offers an extensive range of comminution services, ranging from SAG mill testing to fine and ultrafine grinding. Tests range from industry standards, such as Bond Work Index Testing, to cutting-edge techniques such as pulp chemistry monitoring, to help optimise comminution circuits.

##### Dakota Minerals Encouraging Metallurgical Results from

A master composite was formed using the half-core sampled from the two diamond holes at Lynas Find, which was then crushed to <35mm, blended and rotary split. 60kg of material was used to conduct a JK SMC test, Bond abrasion index test, Bond rod mill grindability at <12.5mm, and Bond rod mill grindability at <3.35mm.