Bond Rod Mill

The specification for the apparatus to determining a “Bond” rod mill work index is first described in Bond & Maxton (1943). It states that the apparatus is a tumbling rod mill to be operated in a locked cycle test at a fixed circulating load. The geometry of the grinding chamber is described as: • mill inside diameter of 12 inches

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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

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The Bond rod mill grindability test is a widely used tool to estimate the response of ores to rod milling. However, the mass of ore required to conduct the test, which can typically vary from

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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

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Bond quantified the rod mill power draw as a function of the Work Index, capacity, and a series of correction factors: PM = Wmtest,i FT Q. FT = F1 F2 F3 F4 F5 F6 . Rod Mill Draft Power Corrections F 1: Correction for Dry Grinding = 1.1 to 2.0. For most materials, F 1 = 1.3 . F 2: Correction for Mill Diameter

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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 mill (circuit) product size of 1,000

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Jul 30, 2020 Bond Rod Mill Work Index. 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. It is a 'locked cycle' test conducted in closed

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MACHINE# 13747 SPECIFICATIONS: 220,000 TPY (Tons Per Year) WIRE ROD MILL WITH 2 NO-TWIST FINISHING TRAINS Age: 1980 - Operating until end of 2015

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Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an extra amount of nes present being fi fi ner than 650 μm. These fi nes proceed to the ball mill improving the ball mill effi ciency. Also, the plotted rod mill P80 value, as shown in Figure 1, is 2900 μm. If the rod mill fi nes are taken into account the rod

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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. Mill operators have long used operating work indices to evaluate grinding circuit

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For comparing the standard Bond rod-mill work index and the new modeled method, work... Read more. Bate SSA A4 feb12_Layout 1 - saimm. approaches, e.g. the Bond work index, would ... the design of ball and rod mill circuits and was ... that, for the size ranges typical of ball mills, the energy per

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Bond Rod Mill Index Test | JKTech. A Bond RMWI test is a standard test for determining the Rod Mill Work Index of a sample of ore. The BRMWI is a measure of the resistance of the material to

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The Bond Index conforming rod charge consists of: 6 rods of 1.25“ diameter and 21“ length 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

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Rod mill work index is used in the SAGMILLING.COM Bond/Barratt specific energy consumption model. The work index is used to calculate the energy requirement to grind rocks in the medium size range, from 10 mm - 20 mm down to about 2 mm

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