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 m (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod.Nov 01, 1998 Using the Bond work index to measure operating comminution efficiency Download PDF. Download PDF. Published 01 “Selection of rod mills, ball mills, pebble mills, and regrind mills,” in Design and Installation of Comminution Circuits, Andrew L. Mular and Gerald V. Jergensen, eds., SME, Chapter 23, pp. 393–438.
Bond S Rod Mill For Work Index. Bond test wis kwht rod mill ball mill 9.5 kwht.8 9 kwht.Bond standard circuit work index assume the rod mill work index of 9.5 applies from the actual rod mill feed sizeof 19,300 m although some of this work might ideally be done by crushers to achieve a rod mill f80 of 16,000 m to a rod.Bond Work Index Rod Mill. Contact Titan for rmation or to arrange an order of this or any other product. The Titan Bond Work Index Rod Mill is one-piece cast construction with integral wave liners of a form described by Bond. This mill is used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating production-size rod mills.
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.Oct 18, 2020 Commentary on the apparatus of the Bond rod mill work index. rod milling, is fitted to a tumbling test, referred to as the Bond rod mill work index (WiRM, or RWi). The apparatus used to determine this work index was described in 1943 by Bond Maxton and a slightly different apparatus was described by Bergstrom in 1985.
Work index of 14.6 kWh t, from the Bond Ball Mill is indicative of a hard ore. The hardness indexes are defined as follows Property Soft Medium Hard Very Hard Bond WI (kWh t) 7 - 9 9 - 14 14 - 20 20.Commentary on the apparatus of the Bond rod mill work. Apr 27, 2016 rod milling, is fitted to a tumbling test, referred to as the Bond rod mill work index WiRM, or RWi. The apparatus used to determine this work index was described in 1943 by Bond amp Maxton and a slightly different apparatus was described by Bergstrom in 1985.
Bond Work Index for Rod Mill. Product Image. Introduction. The Bond Work Index for Ball Mill is a special equipment for testing Bond ball mill work index. Simple lab test can choose ball mill by power method or judge the effects of material properties change to the ball milling process or the operation condition of crusher by using this.Rod mill power is dependent on mill capacity and work index. Mill power increases with Increasing rod charge Increasing mill speed Increasing mill length. Rowland and Kjos (1980) provided an expression to quantify power draw at the pinion shaft per unit mass of rods P †“M.
Bond 26 2339 3 S Rod Mill For Work Index. Bond Tests Mining SGS Bond F C, “Crushing Tests by Pressure and Impact”, Trans AIME, Vol 169, 1947, pp 5866 Bond Rod Mill Grindability Test The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills Various correction factors may have to be.Determination of the work index for ball and rod mills in 1952 and modified it in 1961. The standard Bond ball mill grindability test is a closed circuit dry grinding test with a 250 circulating load. The standard procedural outline of the test is stated in (Bond) 1961. The work index for a ball mill, Wi, is then calculated from the following.
WiRM Bond Rod Mill Test Work Index (kWh t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at the drive pinions. 3.KEYWORDS Work Index, Work Index Efficiency, Bond Work Index testing 4.INTRODUCTION AND BACKGROUND.Laboratory Milling – Rod Ball Mills including Bond Rod Ball Work Grindability Index. MARC manufactures a wide range of laboratory ball rod mills and automated Bond rod ball mills (with wave liners) to suit most metallurgical laboratory applications.
Jun 06, 2015 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. Below describes in general terms the Bond Work Index Procedure used by a Professional.Limestone Bond Ball Mill Calculation Pdf Work Index. Rod mill limestone grinding mm to mm size wiersmaenzoonnlod mill limestone grinding 10 mm to0 mm size 20 tp h , the bond index ball mill rod mill bt 100 xl is used in the planning of , in a size range from 25 mm down to 21 mm whereas ball mill work index bwi is used , material feed size, 335 mm with ball module 1250 mm with rod module.
Jul 30, 2020 Measuring ore grindability in rod mills. The Bond Rod Mill Work Index is a measure of the resistance of the material to grinding in a rod mill. It can be used to determine the grinding power required for a given throughput of material under rod mill grinding conditions.Bond Rod Work Index Mill 911Metallurgist. Bond rod index mill 12 x 24 consisting of a one 1 piece cast shell complete with integral wave 1 hp 360220 volt motorgear reducer drive support frame which allows the mill to tilt 5 degrees during operation and 45 degrees for discharge manual operation receiving pan rod charge and control panel complete with digital revolution counter startstop buttons.
China Bond Work Index for Rod Mill Manufacturers and The Bond Work Index for Ball Mill is a special equipment for testing Bond ball mill work index. Simple lab test can choose ball mill by power method or judge the effects of material properties change to the ball milling process or the operation condition of crusher by using this equipment.Generally, Bond work index is 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 rod-mill work index based on the conventional Bond work index.
The Bond Work Index for Rod Mill is a special equipment for testing Bond rod mill work index. Simple lab test can choose rod mill by power method or judge the effects of material properties change to the rod milling process or the operation condition of rod mill by using this equipment. From 1980s, the company developed the equipment and.Bond rod mill work index Formulae. Rowland, 2006. The rod mill oversize feed factor (EF 4 RM) is calculated using the greater of the sample's rod mill or crushing work index (which is usually the Wi RM). The optimal feed size and EF 4 are both calculated using whichever is greater. where, R ro = 8 + 5 (rod length) (mill diam) units aren'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 m (although some of this work might ideally be done by crushers to achieve a rod mill F80 of 16,000 m) to a rod mill (circuit) product size of 1,000 m.Commentary on the apparatus of the Bond rod mill work index The Bond Third Theory of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period when Bond (and his collaborators) were gathering the information to calibrate comminution models.
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.Bond Work Index an overview ScienceDirect Topics. The rod mill work index laboratory test is conducted by grinding an ore sample prepared to 80 passing 12.7 mm ( inch, the original test being developed in imperial units) to a product size of approximately 1 mm (in the original and still the standard, 14 mesh see Chapter 4 for definition of mesh), thus determining the rod mill work indexget.
Bond ball mill work index formula - e . Bond Work Index - an overview ScienceDirect Topics. The ball mill work index laboratory test is conducted by grinding an ore sample prepared to passing 3.36 mm (6 mesh) to product size in the range of 45-150 m (325-100 mesh), thus determining the ball mill work index (WiB or BWi).FIGURE 5 BOND ROD MILL WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS (MPa) 5 10 15 20 25 30 35 WiRM (metric) The lack of fit observed relating the crushing Work Index was expected to carry over to the other Bond Work Indices. Figure 5 displays the plot of rod mill Work Index (Wi RM) versus UCS. These.
Bond Ball Mill Work Index, BWi, kWh t 13.4 Bond Rod Mill Work Index, RWi, kWh t 18.1 Table 1. Example of AG SAG Ball Mill Circuit 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.2 rods of 1.75“ diameter and 21“ length. The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave-shaped design. At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.