Company profile
News
  1. Home
  2. --
  3. design of bond rod mill work index

design of bond rod mill work index

Measuring ore grindability inrodmills. TheBondRodMillWorkIndexis a measure of the resistance of the material to grinding in arodmill. It can be used to determine the grinding power required for a given throughput of material underrodmillgrinding conditions. It is a 'locked cycle' test conducted in closed circuit with a laboratory ...

Get a Quote Send Message

Hot Products

To Provide You With Quality Products.
BondRodMillWorkIndexEquipment & Apparatus Review
BondRodMillWorkIndexEquipment & Apparatus Review

Commentary on the apparatus of theBondrodmillWorkIndex. by Alex Doll December, 2015 [email protected] TheBond"Third Theory" of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period whenBond(and his collaborators) were gathering the information to calibrate comminution models.

Get A Quote
BondTests | Mining | SGS
BondTests | Mining | SGS

BondRodMillGrindability Test. The test determines theBondRodMillWorkIndexwhich is used withBond'sThird Theory of Comminution to calculate net power requirements when sizing ballmills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standardrodmill.

Get A Quote
BondWorkIndexTests - Grinding Solutions Ltd
BondWorkIndexTests - Grinding Solutions Ltd

BondRodMillGrindability Test. Grinding Solutions can carry outBondRodMillWorkIndextests to determine the energy requirements for milling ore in arodmill. The test requires a minimum of 20kg of -12.5mm material. Closing screen sizes typically range from 4.75mm to 212µm. AbrasionIndexTest

Get A Quote
AMIT 135: Lesson 8RodMills- MiningMillOperator Training
AMIT 135: Lesson 8RodMills- MiningMillOperator Training

RodMillPower Draft.Rodmillpower is dependent onmillcapacity andworkindex.Millpower increases with: Increasingrodcharge; Increasingmillspeed; Increasingmilllength. Rowland and Kjos (1980) provided an expression to quantify power draw at the pinion shaft per unit mass ofrods: P↓M / M↓R = 1.752 D↑0.33 (6.3 - 5.4J↓R) Φ ...

Get A Quote
BondWorkIndexFormula-Equation
BondWorkIndexFormula-Equation

See this useful summary Table ofBondWorkIndexby Minerals. For any circuit, whether a crushing circuit, arodmill, or a closed ballmillcircuit, theWorkIndexalways means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um. The sample was received crushed appropriately for the ballmilltest.

Get A Quote
PDFJKTech Laboratory Services - JKTech | JKTech
PDFJKTech Laboratory Services - JKTech | JKTech

The standardBondRodMillWorkIndextest 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 standardBondrodmill. ABondrodmillis 0.305m by 0.610m, with wave liners (ofa form described byBond), which runs at 40rpm and tilts as described below.

Get A Quote
BondWorkIndexProcedure and Method
BondWorkIndexProcedure and Method

This Grindability Test orBondBallMillWorkIndexProcedure is used to determine theBondWorkIndexofminus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a BallMillusing a standard ball charge.. Below describes in general terms theBondWorkIndexProcedure used by a Professional Metallurgical Testing Laboratory.

Get A Quote
BallMillDesign/Power Calculation
BallMillDesign/Power Calculation

The basic parameters used in ballmilldesign(power calculations),rodmillor any tumblingmillsizing are; material to be ground, characteristics,BondWorkIndex, bulk density, specific density, desiredmilltonnage 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 ...

Get A Quote
RodMillWorkIndexTable - Mineral Processing & Metallurgy
RodMillWorkIndexTable - Mineral Processing & Metallurgy

RodMillWorkIndexTable Previous Next Here is a list presented in table form ofRodMillWorkIndexas tested/presented by SME handbook of mineral processing, N.L Weiss Editor, N.Y. 1985.

Get A Quote
Rapid determination ofBondrod-millworkindexby
Rapid determination ofBondrod-millworkindexby

To calculateBondrod-millworkindices, the four samples were screened and the particle size distributions plotted in Fig. 2.The plot was used to find F 80 of the samples for calculations. Fig. 3, Fig. 4 show the grinding kinetics of Pb, Cu, Fe, and Mn ores in theBondrod-millin different test-sieves. The slopes of all lines in the figures are equal to the k value of Eq.

Get A Quote
BondIndexBallMill/RodMillBT 100 XL - RETSCH
BondIndexBallMill/RodMillBT 100 XL - RETSCH

The grinding jar for theBondIndexRodMillis 12″ x 24″ in size and has a wave-shapeddesign. At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball orrodmill. TheRodMillWorkIndex(RWI) is used for particle size determination in a size range from 25 mm down to 2.1 mm whereas BallMillWork...

Get A Quote
BondWorkIndexRodMill| Titan Process Equipment Ltd
BondWorkIndexRodMill| Titan Process Equipment Ltd

The TitanBondWorkIndexRodMillis one-piece cast construction with integral wave liners of a form described byBond. Thismillis used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating production-sizerodmills.

Get A Quote
PDFOrway Mineral Consultants Canada Ltd. Mississauga, ON
PDFOrway Mineral Consultants Canada Ltd. Mississauga, ON

Bond'sapproach consists of determining the ore hardness characteristics, orWorkIndex(Wi) via standardized laboratory testwork. The full suite ofBondcomminution tests provide the BallMillWorkIndex(BWi), theRodMillWorkIndex(RWi), the CrusherWorkIndex(CWi) and the AbrasionIndex(Ai).

Get A Quote
PDFComparison of Ore Hardness Measurements for GrindingMill
PDFComparison of Ore Hardness Measurements for GrindingMill

standardBondcrushing, androdmillworkindices, abrasion indices and by Dawson forBondBallMillWorkIndextests using crushed feed, and Standard Autogenous GrindingDesign(SAGDesign) Tests, patented by Outokumpu. (See reference 8 below). The comparison of these results gives context to how the various measurements relate to each

Get A Quote
Testwork:Bondrodmillworkindex
Testwork:Bondrodmillworkindex

TheBondrodmillworkindexis not as common as theBondballmillworkindex, and there are two different variations on themillapparatus.The SAGMILLING.COM models expect amillwith a "wave liner", and is not compatible withmillsusing "smooth liners".

Get A Quote
TubularRodMills- ScienceDirect
TubularRodMills- ScienceDirect

Thedesigncharacteristics of industrialrodmillsare similar to ballmills. Mostrodmillsused in mineral processing are of the overflow discharge type as illustrated in Figure 7.2a. Centre peripheral (Figure 7.2c) and end peripheral dischargemills(Figure 8.1) are also in use.The feed end is generally fitted with spout feeders, scoop feeders, double scoop feeders or drum feeders.

Get A Quote
PDFA Method of C alculating Autogenous/ Semi-Autogenous
PDFA Method of C alculating Autogenous/ Semi-Autogenous

No 1rodmill/ballmillcircuit was operating very effi ciently when comparing the combined operatingworkindices for bothmillswith therodmilland ballmilllaboratoryworkindices. Note, in Figure. 1, that therodmillproduct slope is less than 0.5 due to an extra amount of nes present being fi fi ner than 650 μm.

Get A Quote
PDFApplication of OperatingWorkIndices in Autogenous
PDFApplication of OperatingWorkIndices in Autogenous

BondBallMillWorkIndex, BWi, kWh/t 13.4BondRodMillWorkIndex, RWi, kWh/t 18.1 Table 1. Example of AG/SAG BallMillCircuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect on profitability.

Get A Quote
MacPherson Autogenous Grindability Test | Mining | SGS
MacPherson Autogenous Grindability Test | Mining | SGS

The MacPerson Autogenous Grindability Test determines the MacPherson Correlated AutogenousWorkIndex*. This can be used in conjunction with theBondRodand BallMillWorkIndices to determine power requirements, and to suggest circuit configurations for autogenous grinding (AG) and semi-autogenous grinding (SAG) circuits.

Get A Quote
PDFSAGMillTesting - Test Procedures to Characterize Ore
PDFSAGMillTesting - Test Procedures to Characterize Ore

carried out with theBondballmillandrodmillgrindability 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 industrialmill. As such, primary ballmillsshould be designed with therodmillworkindex, and single-stage ballmillsshould

Get A Quote
Mill(grinding) - Wikipedia
Mill(grinding) - Wikipedia

W is theworkindexmeasured in a laboratory ballmill(kilowatt-hours per metric or short ton) P 80 is themillcircuit product size in micrometers; F 80 is themillcircuit feed size in micrometers.Rodmill. A rotating drum causes friction and attrition between steelrodsand ore particles.

Get A Quote
(PDF) Rapid determination ofBondrod-millworkindexby
(PDF) Rapid determination ofBondrod-millworkindexby

Generally,Bondworkindexis 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

Get A Quote
Geometallurgy - Wikipedia
Geometallurgy - Wikipedia

TheBondballmillworkindextest is thought to be additive because of its units of energy; nevertheless, experimental blending results show a non-additive behavior. [18] The SPI(R) value is known not to be an additive parameter, however errors introduced by block kriging are not thought to be significant .

Get A Quote
bondcrushing law and andworkindex
bondcrushing law and andworkindex

Key Words: Comminution Tests,BondWorkIndices, JKTech, GrindingMillDesign, ... standardBondcrushing, androdmillworkindices, abrasion indices and by... More details » Get Price a fracture toughness based model for the prediction of power

Get A Quote
PDFComminution Services - SGS
PDFComminution Services - SGS

ballmilland can be performed at mesh sizes ranging from 48 mesh to 400 mesh.BondBallMillWorkIndex(and modifiedBondWorkIndex) data can be used in the CEET® grinding simulator. • TheBondRodMillGrindability Test determines theBondRodMillWorkIndexwhich is used to determine net power requirements for sizingrodmills. The ...

Get A Quote
PDFModeling the Specific Grinding Energy and Ball-millScaleup
PDFModeling the Specific Grinding Energy and Ball-millScaleup

21 CONCLUSIONS Continued In the presentwork, equations were also derived, giving: zthe ball-millpower drawP as a function of its dimensions: internalmilldiameter D and length L, zthe ball-millpower drawP as a function of the feed D f (mm) and the product size d (mm), theBondworkindexw i (kWh/short ton) and themillthroughput T (short ton/h), zthe ball-milldimensions (D and L), when ...

Get A Quote
BondBallMillIndexTest | JKTech
BondBallMillIndexTest | JKTech

ABondBallMillWorkIndexmay also be used in the simulation and optimisation of existingmill(s) and the associated grinding circuit(s). Sample Requirements: A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm, as required for theBondBallMillWorkIndextest feed.

Get A Quote
PDFWhat Can Go Wrong in Comminution CircuitDesign?
PDFWhat Can Go Wrong in Comminution CircuitDesign?

• thebondballmillworkindices determinations gave reasonably reproducible results, • significant variation was observed in the measurement of thebondrodmillworkindexon at least one sample tested, and • large variations in abrasionindexand crushingworkindexwere due to variations in the test method across the laboratories.

Get A Quote
BondTests | Mining | SGS China
BondTests | Mining | SGS China

BondRodMillGrindability Test. The test determines theBondRodMillWorkIndexwhich is used withBond'sThird Theory of Comminution to calculate net power requirements when sizing ballmills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standardrodmill.

Get A Quote

Copyright © 2020.Henan AOLIGEI Co.ltd. All rights reserved.

shangwutong