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 µGet 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 sizes from 65 to 200 mesh (normally 100 mesh). The test requires calibration against the standard Bond Ball Mill Work Index test to estimate the Work Index.Get Price
Bond Index Ball Mill / Rod Mill BT 100 XL - RETSCH
At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill. The Rod Mill Work Index (RWI) is used for particle size determination in a size range from 25 mm down to 2.1 mm whereas Ball Mill Work Index (BWI) is used for the range from 2.1 mm down to 100 µm. Adjustment of grinding parameters:Get Price
Comparison of Ore Hardness Measurements for Grinding Mill ...
Bond rod and ball mill work indices are readily converted to pinion energy for rod and ball mills but not for SAG mills. Reproducibility, while not studied in this paper is clearly a part of the meaningfulness of the data presented. It was clear from the data that there are large variances between the various resultsGet Price
intensification of bond ball mill work index test
Application Of Operating Work Indices In Autogenous. The Bond ball mill work index test is thought to be additive because of its units of energy nevertheless experimental blending results show a nonadditive behavior The SPIR value is known not to be an additive parameter however errors introduced by block kriging are not thought to be significantGet Price
Bond Work Index Tests - Grinding Solutions Ltd
The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits The test requires a minimum of 10kg of sample that has .Get Price
work index for iron ball mill - prometeo-baricella
The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh), thus determining the ball mill work index (Wi B or BWi). The work index calculations across a narrow size range are conducted using the appropriate laboratory workGet Price
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.Get Price
ball mill work index calc xls - studiopsicologiagemma
Testwork: Bond ball mill 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 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed. The test much achieve a steady-state before completion.Get Price
USING THE SMC TEST® TO PREDICT COMMINUTION CIRCUIT .
However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction). Hence from equation 7, to crush to the ball mill .Get Price
(PDF) A quick method for bond work index approximate value ...
This study aims to develop a new approach toward estimating the Bond ball mill work index (BBWI) by applying a series of kinetic grinding tests with Bond standard mill. Establishing a series of ...Get Price
ball mill work index calc xls - studiopsicologiagemma
Insmart Bond's Ball-Mill Work Index is a measure of the resistance of the material to grinding in a ball mill. This Index is widely used in the industry for comparing the resistance of different materials to ball milling, for estimating the energy required for grinding and .Get Price
JKTech Laboratory Services - JKTech | JKTech
The Bond Ball Mill Work Index provides a measure of how much energy is required to grind a sample of ore in a ball mill. The following table indicates some typical figures, and a relative measure of what they mean. Property Soft Medium Hard Very Hard Bond WI (kWh/t) 7 - 9 9 -14 14 -20 > 20 ...Get Price
Ball Mill - Work Index Ball Mill Manufacturer from Chennai
Work Index Ball Mill, alluding to the grind ability list of Metals, is utilized to demonstrate the granulating trouble of the material. It is measured by a rule that to compute the work file ball plant in light of yield of every unrest of the factory after the material is ground to an adjusted state by the predetermined plan.Get Price
Bond Work Index Formula-Equation
The Bond Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball mill. It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions. It is a 'locked cycle' test conducted in closed circuit with a laboratory screen.Get Price
A Method of C alculating Autogenous/ Semi-Autogenous ...
rod mill/ball mill circuit was operating very efﬁ ciently when comparing the combined operating work indices for both mills with the rod mill and ball mill laboratory work indices. Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an .Get Price
Geometallurgy - Wikipedia
The Bond ball mill work index test is thought to be additive because of its units of energy; nevertheless, experimental blending results show a non-additive behavior. 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 Price
Compare and Understand Rod/Ball/Impact-Crushing/Abrasion ...
The Bond ball mill work index (Wi BM, or BWi) conducted from a feed size of approximately 2 mm to a product size on the order of 100 µm. The Bond rod mill work index (Wi RM, or RWi) conducted from a feed size of approximately 10 mm to a product size on the order of 1 mm.Get Price
ball mill sizing with bond method work index base
ball mill machine designs . 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 Fand maximum 'chunk size', product size as Pand maximum and finally the type of ...Get Price
Ball Mill How Does A Sag Mill Work Crusher Mills C
2018220 mills with the rod mill and ball mill laboratory work indices. Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an extra amount of nes present being ? ? ner than 650 m. These ? nes proceed to the ball mill improving the ball mill ef? ciency. Also, the plotted rod mill P80 value, as shown in Figure 1, is 2900. ...Get Price
HOW BALL MILL CRUSHER CONE WORK
How Ball Mill Crusher Cone Work cz-eueu. how ball mill crusher cone work YouTube Sep 12, 2016 · how does a ball mill crusher work Cone Ball Mill,Conical Ball Mill,Energy Saving Ball Mill,Crusher crusher work index Get Price And Support Online; Crusher Wikipedia Each crusher is designed to work with a certain the SAG mill and ball mill are considered get priceGet Price
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.Get Price
How Ball Mills Work (Engineering and Mining) - YouTube
Jun 20, 2019· How Ball Mills Work The following process description is based upon a ball mill used in the hard rock mining industry for liberating minerals from ore, but the operating principle for ball mills ...Get Price
Mill (grinding) - Wikipedia
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 micrometers. Rod mill. A rotating drum causes friction and attrition between steel rods and ore particles.Get Price