Bond Rod Mill Work Modified

The mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a rod mill ball mill or pebble mill agsag mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill

This test determines the bond rod mill work index which can be used with bonds 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 476 mm to

Internationally accepted mineral metallurgical standard test procedures to determine the physical properties of ores include the bond ball mill work index and the bond rod mill work index these are empirical indices determined by close circuit grindability tests developed by in the mid 1930s

21 conclusions continued in the present work equations were also derived giving zthe ballmill power drawp as a function of its dimensions internal mill diameter d and length l zthe ballmill power drawp as a function of the feed d f mm and the product size d mm the bond work index w i kwhshort ton and the mill throughput t short tonh zthe ballmill dimensions d and l when

Apr 20 2012 bobby grew up in the heart of illinois becoming an avid dirt track race fan which has developed into a life long passion taking a break from the midwest dirt tracks to fight evil doers in the world he completed a full 21 year career in the marine corps

Oct 03 2015 the 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

Standard size ranges and the related bond work indexes feed size f 80 m product size p 80 m work index 100000 10000 crushing cwi 10000 2100 rod milling rwi 2100 100 ball milling bwi fig 1 laboratory equipment used by rivs for determining the bond work

The work index covering grinding in tumbling mills of coarse sizes is labelled m ia the 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 2004 a whilst m ib values can be determined using the data generated by a conventional bond

400 mesh bond ball mill work index and modified bond work index data can be used in the ceet grinding simulator the bond rod mill grindability test determines the bond rod mill work index which is used to determine net power requirements for sizing rod mills the test is a closed circuit dry grindability test run in a standard rod

To estimate the ball mill work index hojjat h gharehgheshlagh hacettepe university department of mining engineering 06800 beytepe ankara turkey slaq abstract the standard bond method is the most acceptable method for designing and selecting ballrod mills described by their basic parameter called work index w i

In order to solve the wrinkle problem posco no2 rod mill has trimed the top and tail part of final products but triming subsequently caused the yield ratio decreased

Well here it is this reamer will work on 900cc or 1000cc engines basically it is a modified shell reamer fixed to a specially machined arbor sized to work with the standard alignment bushing that comes with the 134 bushing reamer this item will be made to order the standard price is 19000

Bond rod mill grindability test grinding solutions can carry out bond rod mill work index tests to determine the energy requirements for milling ore in a rod mill the test requires a minimum of 20kg of 125mm material closing screen sizes typically range from 475mm to 212m abrasion index test

This test determines the bond rod mill work index which can be used with bonds 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 476 mm to

Range covers crushing dwi ab rod milling and ball milling where different work index values are applied to each range to arrive at the bond se value after applying the agsag factor to the bond se value corrections are made for the sg ab values and low aspect la mill con guration if applicable

Bond rod mill grindability requires 25 kg of minus in material 950 this test determines the bond rod mill work index which can be used with bonds 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

Most of my work is in 2rail o scale i do some s and ho scale work if the nature of the job does not require an operational test see the description of testing in the custom drives section that is linked to below these pages will be revised from time to time to add

Bond rod mill work index bond work index formula equation bond for 50 mm gt d gt 0 05 mm w is the work index measured in a laboratory ball mill kilowatt hours per metric or short ton p 80 is the mill circuit product size in micrometers f 80 is the mill circuit feed size in micro

The bond rod mill work index is not as common 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 compatible with mills using smooth liners

Bond s rod mill for work index as a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any sizereduction requirements including quarry aggregate and different kinds of minerals

Bond rod mill work index on at least one sample tested and bond design modified design fig 1 correlation of crushing work index and dropweight index values have fallen well below this relationship and this has led some metallurgists to claim that the ore is not overly competent

The bond abrasion test determines the abrasion index which is used to determine steel media and liner wear in crushers rod mills and ball mills bond developed the following correlations based on the wear rate in pounds of metal wearkwh of energy used in the comminution process

The bond index conforming rod charge consists of 6 rods of 125 diameter and 21 length 2 rods of 175 diameter and 21 length the grinding jar for the bond index rod mill is 12 x 24 in size and has a waveshaped design at least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill

Range covers crushing dwi ab rod milling and ball milling where different work index values are applied to each range to arrive at the bond se value after applying the agsag factor to the bond se value corrections are made for the sg ab values and low aspect la mill con guration if applicable

The standard bond rod mill work index test procedure is firstly to stage crush the feed to pass 127 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 0305m by 0610m with wave liners of a form described by bond which runs at 40rpm and tilts as described below

Determination of the work index for ball and rod mills in 1952 and modified it in 1961 the standard bond ball mill grindability test is a closed circuit dry grinding test with a 250 circulating load the standard procedural outline of the test is stated in bond 1961 the work index for a ball mill wi is then calculated from the following

Autogenous bond rod mill and bond ball mill work index test on each of the shaft 1 and shaft 2 composite samples and 1 bond ball mill work index test on the shaft 3 composite minnovex used the bond results supplied by macpherson as well as the spi results for their grinding circuit design macpherson also studied the

Range covers crushing dwi ab rod milling and ball milling where different work index values are applied to each range to arrive at the bond se value after applying the agsag factor to the bond se value corrections are made for the sg ab values and low aspect la mill con guration if applicable

Bond s rod mill for work index as a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any sizereduction requirements including quarry aggregate and different kinds of minerals

Rod 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

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

Bond s rod mill for work index as a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any sizereduction requirements including quarry aggregate and different kinds of minerals

Determining the bond work indexes of a sample involves tests using laboratory scale grinding circuits a unit weight is determined by achieving maximum packing of the prepared ore sample the unit weight is then fed into the circuit with undersized product being replaced by

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

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 12 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 if you

Inspect smp mills rubber liners on service days and replace rubber liners lifter bars if loose out move rod mill ball mill and smp mills as required by fitter to align mill gear and pinion gap fit rod mill and ball mill change out slings on mills for mill change out with the assistance of a rigger ball mill weigh 180t and rod mill 240t

A bond rod mill work index is to be determined in an apparatus with a wave liner the author is aware of four laboratories that offer a rod mill work index test where the lining of the mill is either smooth or smooth with a small number of primitive lifters that do not constitute a wave liner one of

Rod mill power is dependent on mill capacity and work index mill power increases with increasing rod charge increasing mill speed increasing mill length rowland and kjos 1980 provided an expression to quantify power draw at the pinion shaft per unit mass of rods pm

Bond standard circuit work index assume the rod mill work index of 95 applies from the actual rod mill feed sizeof 19300 m although some of this work might ideally be done by crushers to achieve a rod mill f80 of 16000 m to a rod mill circuit product size of 1000 m w1 95 x 10 1000 10 19300 232 kwht

Particle size are calculated and the bond ball work index is then calculated using the standard bond ball work index formula