A quick method for Bond work index approximate value determinationAug 11, 2016 . Abstract: The Bond work index is a measure of ore resistance to crushing and grinding and is determined . determination using the standard and quick procedures were carried out on samples of line and . others in Allis-Chalmers have developed a grinding test in a ball mill in a closed cycle until the.**line bond ball mill work index pdf**,Relationships Between Bond's Grindability (Gbg) and Breakage .parameters of six different lines in a batch laboratory ball mill under standard conditions, and also the relationship between Bond's grindability and breakage parameter values of line samples. 2 THEORY. When breakage is occurring in an efficient manner, the breakage of a given size fraction of material.

Bond Work Index Tables (Wi) - ScribdHere there are given tables from various sources for the Bond work index values of mining materials (ores, industrial minerals and rocks). These work . Hematite – Oolitic Magnetite Taconite Lead ore. Lead-zinc ore. Line Manganese ore. Magnesite Molybdenum ore. Nickel ore. Oilshale Phosphate rock. Potash ore**line bond ball mill work index pdf**,line bond ball mill work index pdf,Table of Bond Work Index by Minerals - 911 MetallurgistSep 22, 2017 . Avg Bond Work Index, kWh/t, kWh/t, kWh/sh.t, kWh/t, kWh/t, kWh/t, kWh/t, Range, No of Tests. Alumina, 17.9, 7-34, 6. Andesite, 20.1, 18.3, 20.1, 19.5. Barite, 6.3, 4.7, 5.2, 5.0, 5.8, 4-9, 7. Basalt, 18.9, 17.1, 18.8, 19.0, 19.0. Bauxite, 9.7, 9.5, 8.8, 9.7, 10.0, 10.0, 14.5, 1-31, 29. Cement clinker, 15.0, 13.1, 13.5.

compressive strength and modulus of elasticity and the bond work index . The ball mill is a common piece of equipment in grinding circuits. .. ball mill grindability. The test mesh used was 100 mesh (85. μm) [14-16]. The Bond work index Wi was calculated from Equation (2). Wi = 44.5/(P1)0.23 X (Gbp)0.82 [10/(P80)0,5.

parameters of six different lines in a batch laboratory ball mill under standard conditions, and also the relationship between Bond's grindability and breakage parameter values of line samples. 2 THEORY. When breakage is occurring in an efficient manner, the breakage of a given size fraction of material.

Aug 11, 2016 . Abstract: The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the . determination using the standard and quick procedures were carried out on samples of line and . determined by simulating a dry grinding in a closed circuit in the Bond ball mill to.

The study is focused on comminuting behavior of line and calculation of energy requirements for the effective production of ultra-fine particle up to mesh liberation at Lucky Cement Limited. In this regard calculation of work index of line made by standard Bond grindability test. Ball mill was employed to conduct.

Jan 1, 1989 . energy required for comminution, and of studying the efficiency of grinding mills. The Bond Work Index. The Bond Work Index of a material is defined as the energy needed to reduce one short ton of that material from a notional infinite size to a dso size of 100I-'m. It is determined by the Bond grindability test,.

compressive strength and modulus of elasticity and the bond work index . The ball mill is a common piece of equipment in grinding circuits. .. ball mill grindability. The test mesh used was 100 mesh (85. μm) [14-16]. The Bond work index Wi was calculated from Equation (2). Wi = 44.5/(P1)0.23 X (Gbp)0.82 [10/(P80)0,5.

Keywords: Modeling, Work Index, Miduk Copper, Control Screen, Bond Ball Mill. 1- Introduction. To meet the increasing metal demands of various industries, the efforts to explore and extract the various ores has been extended. Mineral processing plants have the task to produce economic concentrates, and one of its major.

This work presents the results of the Bond work index in a ball mill on samples of carbonate mine- . The Bond Work. Index is used as an indication of this energy consumption [1,2]. In the case of carbonate mineral raw material from the site Spasina. – Brdjani, the Bond Work . masses of sand, loose to line cores,.

eprints.nottingham/30685/1/BWI-HGI%20Fuel%20Paper.pdf. Copyright and reuse: The Nottingham .. the Bond Work Index (BWI) for tube and ball mills [9,10]. No stan- dard grindability tests currently exist . testing of a wide range of brittle materials, including line, subbituminous, and bituminous coal, and.

In this thesis the common Bond ball mill grindability test is conducted on three different sample materials. The . experimental model is presented, where the Mergan mill can be used to approximate the Bond work index for an ore .. indices have been established for the samples of copper ore, andesite and line.

ABSTRACT. This paper defines the grindability coefficient as the material constant that unambiguously characterizes the resistance of raw material to grinding. The grindability coefficient does not depend on the size of grinding product and in that way it facilitates the analytical consideration of the relationship between the.

mill charge. The media sizing formula of Bond is the proven calculation to confirm the required media size. B Ø (mm) = 20.17. ·. C Ø (mm) = 18.15. ·. B ball diameter in (mm). C. Cylpebs diameter in (mm). F size of mill feed in micron, 80 % of new mill feed passing. Wi. Bond Work Index (KWh/t). Cs per cent of critical mill speed.

10 balls of 25,4 mm. 71 balls of 19,05 mm. 94 balls of 15,94 mm. total: 20,125 kg of balls. -, balance and sieves are obviously required. -, Some pictures of laboratory Bond mills here below: . The work index (Wi) is then calculated with the following formula: . Link: .lixingfeng/doc/ASTM_D409-02.pdf.

Typical energy savings of 10–20% can be expected when installing HPGR vs. a SAG mill. Wipf. (2005) showed why conventional Bond Work index tests on HPGR product is likely to under- estimate the energy savings that can be achieved by installing HPGR. Energy efficiency of HPGR is, however, ore-specific. The biggest.

A Bond Ball Mill Index Test (BBMWI) is a standard test for determining the Ball Mill Work Index of a sample of ore. The BBMWI is a measure of the resistance of the material to crushing and grinding. It can be used to determine the grinding power required for a given throughput of material under ball mill grinding consitions.

The Bond's work index of Baban Tsauni (Nigeria) ore was found to be 11.52kWh/tonne. Keywords: Grindability, comminution, energy, mineral, comparative . methods for predicting ball-mill and rod-mill energy requirements and provided an accurate measure of ore grindability (Gupta and Yan, 2006). The standard Bond.

1. Section. % Energy consumption / Ton of cement. Line crusher. 2. Raw mix grinding. 23. Coal grinding. 3. Rotary kiln. 28. Ball mill clinker grinding. 40. Packing. 2 . The first crusher product 12 mm size showed Bond work Index 13.2 kW/Ton and the second crusher .. P_Grinding_Operations_Design.pdf ). 3.

Jul 17, 2007 . The Bond grindability test has been widely used for the predictions of ball and rod mill . x80 is that of the mill product; Wi is the Bond work index which is the specific work demand (kWh/t) for grinding from . In the following some specific characteristics of clinker, gypsum, line, fly ash, slag and natural.

To grind the given line material to a smaller size using a ball mill and to obtain the size distribution . Weigh the given line sample and obtain the initial size distribution by sieving. 2. Grind the sample . Where the work index is defined as the energy required per unit mass in kWh/ton to reduce an infinitely large.

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