Bond Rod Index Mill, 12" x 24" consisting of a one (1) piece cast shell complete with integral wave, 1 Hp 3/60/220 volt motor/gear 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, start/stop …
Bond specified that the liners of a Bond rod mill work index apparatus should have wave liners, and the Optimized Bond/Barratt model is calibrated to the wave-liner machines. …
• WiBM, the Bond ball mill work index (conducted at an appropriate closing mesh size), unitless (but relative to either a metric tonne or Imperial short ton basis). • WiRM, the …
To characterize rock breakage in rod mills, Bond developed a dry locked -cycle test that uses a 12 in. diameter, 24 in. long batch mill with wave liners and running at 46 r/min (see Figure 3). The mill is mounted on a rocker, which allows for the mill to be tilted up by 5° to the horizontal and down by 5° during the test. The mill is
We have expanded our milling capacity to anywhere from 600 - 1000 kg per day, depending on the grind and hardness. This mill will be placed and commissioned…
Greatly accelerated liner wear due to high-energy impacts on the liner. For a 5m diameter mill these will be in excess of 8m.s-1, for a 10m diameter mill these exceed 12m.s-1. This causes high chrome liners to spall and crack and they may even fracture. This can reduce liner life from a year to less than a few months.
Rubber liners absorb the impact of the larger grinding media and thus protecting – the mill structure and prolonging it's life. Weight: Rubber weighs about 15% of an equivalent volume of steel. This means that a rubber liner system reduces the load on the mill structure and also reduces the basic power draw.
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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 …
Rod mill As there should be very little direct impact in rod mills, thanks to the rolling charge motion, and as rod mills are rarely bigger than 4 meters in diameter, it is possible to use harder, more brittle cast alloys such as cast high-chrome metal liners or composite rubber liners with hard cast inserts on the mill shell. However, the rods
The rod mill motor power is in horsepower at the mill pinion-shaft. For different length rod mills power varies directly as rod length. For difference between new and worn liners increase power draw by 6%, and adjust for bulk density per Table A. Wet grinding rod mills are normally used in minerals processing plants.
Rod mill is a roller-type grinding device with a long and round metal rod as the roller. In 1870, a rod mill with uniform discharging particle size was developed on the basis of the ball mill. ... and access panel, with roughly the same structure as overflow ball mill. The liner of bar mill is usually in waveform, step shape, or wedge shape. Type.
To characterize rock breakage in rod mills, Bond developed a dry lockedcycle test that uses a 12- -in.-diameter, 24-in.-long batch mill with wave liners and running at 46 rpm (see Figure 3 ). The mill is mounted on a rocker, which allows for the mill to be tilted up by 5° to the horizontal and down during the by 5° course of the test.
Bond Work Index Test Ball Mill. US $ 14,500. Bond Rod Work Index Mill. Bond Grindability Index Test Ball Mill. US $ 16,000. ... WAVE BALL MILL SHELL LINERS ... Rod mill end liners are vertical; on all other mills the …
Typically R = 8. Rod Mill Charge: Typically 45% of internal volume; 35% – 65% range. Bed porosity typically 40%. Height of bed measured in the same way as ball mills. Bulk density of rods = 6.25 tons/m3. In wet grinding, the solids concentration 1s typically 60% – 75% by mass. A rod in situ and a cutaway of a rod mill interior.
The entire weight of the rod or rods will be transferred to that spot. The result may be a broken liner. Of course the condition of the mill liners will be a major factor in its survival. Even if the liner doesn't break, the impact will begin to loosen the bolts that hold the liners in. Once these bolts are loose they will begin to leak.
The rod mill feeds a wet ball mill at a feed size of 1.0 mm (1000 μm) and produces a product with 80% passing a 150 μm screen. The rod mill is in an open grinding circuit. Determine: 1. the shaft power of the rod mill, 2. the size of the industrial mill. Data: Laboratory Standard Bond Test: Rod Mill: Grindability index at 10 mesh = 13.5 kWh/t ...
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are carefully selected based on the operating conditions of each mill. Liners are designed for maximum performance and minimized replacement time. We made the world's largest liners, weighing 8 tons Rubber mill linings Impact resistant and lightweight Skega™ rubber mill linings were first pioneered by Outotec over 60 years ago.
Rod Mill Autogenous Mill; Length: Diameter Ratio: 1.4 to 1.8: 0.5 to 3.5 ... = 6.6D for single wave liners where D is the mill diameter (m). Double wave liners are more suitable for ball sizes less than 60 mm. Otherwise, single …
This post specifically deals with the Bond type rod mill with a wave liner. Rod mill work index results of the non-standard apparatus have been culled from the following plots and regressions. All ...
The laboratory rod-mill used here is 305 mm diameter × 610 mm long (volume: 44.5 L), with a wave type liner and a revolution counter that runs at 46 rpm. It …
standard Bond rod mill. A Bond rod mill is 0.305m by 0.610m, with wave liners (of a form described by Bond), which runs at 40rpm and tilts as described below. The charge consists of 8 rods, weighing a total of 33.38kg. Initially, a 1250ml sub-sample of feed is prepared for use in the first batch grind.
Use them to mill soft, hard, brittle and fibrous materials, either in a wet or dry state. With slightly larger barrel volumes than the Essa ball mill series, rod mills are ideal for larger and more coarse materials. Rod charges and an acoustic safety enclosure for the rotating barrel are supplied as standard.
Bond rod mill work index determinations are supposed to be done in a mill employing a wave liner. The "pilot plant" sample rod mill work index was determined at the A.R. MacPherson - Hazen laboratory in the USA which has a wave liner.
The laboratory rod-mill used here is 305 mm diameter × 610 mm long (volume: 44.5 L), with a wave type liner and a revolution counter that runs at 46 rpm. Results and discussion. To calculate Bond rod-mill work indices, the four samples were screened and the particle size distributions plotted in Fig. 2.
The liners are from 50 to 65 mm thick (2″ to 2.5″) with the waves from 60 to 75 mm (2.5″ to 3″) above the liners. The replaceable lifter bar design made of either metal or rubber in about the same design proportions can be used. There could be a loss in power with rubber particularly if the mill speed is faster than about 72% of ...