### correlation between bond work index and ... - Assiut University

KEYWORDS: Bond work index – Mechanical properties of rocks –. Grinding .... The Bond's standard ball mill is used to determine the work index value of different ..... 13- L. G. Austin, and K., Brame, : A comparison of the Bond method for sizing.

Get Price### Pergamon B. AKSANI § and B. SONMEZ ¶ Keywords - zenith

The Bond Work Index (W~ of an ore is determined by Bond Grindability Tests that indicate ... grinding in a closed circuit at 250 % circulating load in a Bond ball mill. ... model gives reasonably good simulation results in comparison with more.

Get Price### determination of the bond's work index - European Scientific Journal ...

Bond devised several methods for predicting ball-mill and rod-mill energy ... The comparative method was used for the determination of the work index of the.

Get Price### Observations on the Bond standard grindability test, and a ... - SAIMM

1 Jan 1989 ... ... of the Bond grindability test arise from its use of a mill without litters and of screening, instead ... The Bond grindability test, the Bond Work Index, and uncil for ... tion of the energy consumed by wet grinding in a ball mill of 8 ft (2,44 ... A major difficulty in the use of the comparative grind- ability method is...

Get Price### Bond Index and Hardgrove Grindability Index test for biomass and ...

16 Sep 2014 ... Bond Index & Hardgrove Grindability. Index Tests for .... mill. □ The Bond Work Index W i expresses the resistance of the material to grinding to a .... Mill Comparison. Tube & Ball ... performance of biomass in tube and ball mill.

Get Price### What exactly is 'Work Index' and how can I make ... - Metcom Expertise

'Work Index' is to measuring energy in size reduction what the 'meter' is to measuring distance. It is a standard measure that brings all size reduction circuits onto a common basis for comparison. It starts with Bond's Work Index equation: ... crushing circuit, a rod mill, or a closed ball mill circuit, the Work Index always means...

Get Price### Relative Bond Work Index BWi | Comparative Grindability Test ...

16 Jun 2015 ... Relative Bond Work Index BWi | Comparative Grindability Test ... ball mill with approximately 10 kg of ball charge distributed as follows:.

Get Price### Comparative Analysis of Grindability of Iron- ore and Granite

Comparative Analysis of Grindability of Iron- ... measure ore grindability is the Bond work index (Wi). ... Size analysis of the ball mill for the same duration feed.

Get Price### Kinetic grinding test approach to estimate the ball mill work index - DOI

31 Jul 2015 ... a new approach toward estimating the Bond ball mill work index (BBWI) by ... Keywords: work index, Bond method, kinetic grinding test, grindability, ball mill ..... Comparison of standard Bond method and kinetic tests results.

Get Price### Bond Tests | Mining | SGS

Similar to a Comparative Work Index, this test is an open circuit dry batch grindability test run in the standard Bond Ball Mill for a set time. It can be used at mesh...

Get Price### Relationships between comminution energy and product ... - SciELO

The test work involved Bond ball mill testing, rod milling, low intensity magnetic .... Table I shows the Bond ball mill work index obtained for the ore samples as well .... Figure 5—Product sizing comparison for 'soft' ore fractions, Wi = 15.3. kWh/t.

Get Price### Metallurgical Testing - ALS Global

Bond ball mill work index. •. • Bond impact crushing work index. •. • Bond rod mill work index. •. • Comparative work index. •. • High pressure grinding rolls...

Get Price### Download this PDF file - The Online Journal of Science and ...

The analysis of size reduction in tumbling ball mills using the concepts of specific rate of .... where Wi is Bond work index in kWh/t, Pi is sieve size at which the test is .... A comparison of the Bond method for sizing wet tumbling mills with a size-.

Get Price### Issue No. 6 - Calculate the 'Work Index Efficiency' - Metcom Expertise

Calculate the 'Work Index Efficiency' of your grinding circuit. ... Then, by comparison with their test database, the required kWh per ton for the new mill could be ... The Bond Ball Mill Test Work Index of the ore was measured to be 15.8 kWh/t.

Get Price### Why is the Bond Ball Mill Grindability Test done the way it is done?

The Bond Ball Mill Grindability Test is a locked-cycle laboratory grinding test. ... Mill Work Index which expresses the resistance of a material to ball milling. .... since the object of the tests is to obtain an accurate comparison of different ores,.

Get Price### Comparison of Ore Hardness Measurements for Grinding Mill ...

This paper will therefore present the first such comparison using test results from the Phelps ... Bond rod and ball mill work indices are readily converted to.

Get Price### Simulation studies on Energy Requirement, Work Input and ... - IJETAE

work input and grindability for the ball mill using the above ... Finally a comparison has been .... equation used by them for the ball mill work index (Bond.

Get Price### Geometallurgy - Wikipedia, the free encyclopedia

Test work[edit]. The following tests are commonly used for geometallurgical modeling: Bond ball mill work index test; Modified or comparative Bond ball mill...

Get Price### Comparison of UCS to Bond Work Indices - SAGMILLING

This paper examines potential relationships between UCS and Bond. Work Index values (crushing, rod mill and ball mill). Data from 11 mines located around the...

Get Price