Ball Mill Design/Power Calculation LinkedIn
Dec 12, 2016· The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index.
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Dec 12, 2016· The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index.
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 ''lockedcycle'' test where ground product is removed from test cycles and replaced by fresh feed.
rod mill work index has not been de ned as yet. The ball fi mill work index is con rmed at 16 kWh/t. The operating fi work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high ineffi ciency. This raises the point that, in some cases, the Bond EF4 .
Tests range from industry standards, such as Bond Work Index Testing, to cuttingedge techniques such as pulp chemistry monitoring, to help optimise comminution circuits. We are also a accredited laboratory for fine grinding. We have comminution equipment including ball mills, rod mills and a range of crushing equipment.
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, and singlestage ball mills .
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. If you ...
The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ''chunk size'', product size as P80 and maximum and finally the type of circuit open/closed ...
Bond Index Ball Mill / Rod Mill BT 100 XL RETSCH. The Bond Index conforming rod charge consists of: 6 rods of " diameter and 21" length; 2 rods of " diameter and 21" length; The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a waveshaped design.
In the latter case, correction factors needed for reasonably accurate scaleup to industrial size mills under various design conditions may be factored out of the basic Bond Operating Work Index, to derive the "Corrected" Operating Work Index, for direct comparison with the Laboratory Work Index .
Bond Grindability Tests 7 Efficiency Factors 7 Operating Work Index 8 Limitations of the Bond Test 9 Single Particle Tests 9 Bond Impact Test 9 Drop Weight Test 10 Mill Speed 10 AG Mills 10 SAG Mills 10 Rod Mills 10 Ball Mills 11 Linear and Speed Effects 11 Fines Correction 11
Rod Mill Ball Mill Closed circuit crushing to 16 mm Open circuit 8'' dia. rod mill to 1 mm Closed circuit 8'' dia. ball mill to P80 um The ore Test Work Index = Circuit Operating Work Index 9 The Standard Bond Circuit Coarse Ore Bins Fine Ore Bins Screen Crushing Screen Classification Rod Mill Ball Mill THIS IS THE REFERENCE BASIS FOR ALL ...
2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up (Bond''s Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)
GRINDING ROLLS CIRCUIT DESIGN By Stephen Morrell ... rod milling and ball milling work index tests for crushers, rod and ball mills and the JK A,b parameters and the SPI test ... Bond ball work index)
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 .
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".
Rod Mill Ball Mill Closed circuit crushing to 16 mm Open circuit 8'' dia. rod mill to 1 mm Closed circuit 8'' dia. ball mill to P80 um The ore Test Work Index = Circuit Operating Work Index 9 The Standard Bond Circuit Coarse Ore Bins Fine Ore Bins Screen Crushing Screen Classification Rod Mill Ball Mill THIS IS THE REFERENCE BASIS FOR ALL ...
A meaningful expression between bond work index, grindability index and friability value ... 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 ... which is the net grams of undersize produced per mill revolution. "Work Index, ...
The specification for the apparatus to determining a "Bond" rod mill work index is first described in Bond Maxton (1943). It states that the apparatus is a tumbling rod mill to be operated in a locked cycle test at a fixed circulating load.
Question: The Ore Fed To A Rod Mill Has A Bond Work Index Of KWht1. The P80 Of Feed To The Mill Is Cm And The P80 Of The Product From The Mill Is Calculate The Work Required To Grind The Ore To The Product Size As Well As The Reduction Ratio.
ball mill and can be performed at mesh sizes ranging from 48 mesh to 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 ...
The standard Bond Rod Mill Work Index test procedure is firstly to stage crush the feed to pass 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 by, with wave liners (of a form described by Bond), which runs at 40rpm and tilts as described below.
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. 120tph granite crushing line in Zimbabwe. 400tph crushing plant in Guinea. Chat Online
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 LowEnergy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index.
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.
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