بيت /Grate Discharge Sag Mill
· The discharge rate of the product material depends on how efficiently the discharge pump (grate and pulp lifters) is operating. Similar to the impeller design affecting the pump capacity, the pulp lifter design affects the discharge capacity (or mill throughput) of the SAG/AG grinding mills.
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stage AG/SAG mills it became clear that even grate discharge mills can accumulate slurry at the toe of the charge and this can considerably affect power draw depending on the extent of the slurry pool (Morrell, 1989, Morrell and Kojovic, 1996). Hence it can be concluded that
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predicted. Slurry pooling causes the power draw in AG and SAG mills to be lower than a mill without a slurry pool. This phenomenon results in overflow mills usually drawing less power than grate discharge mills that are operating without a slurry pool. This is because by definition overflow mills operate all of the time with a slurry pool.
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Each mill is equipped with a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From startup, the mill struggled to meet the required production rates. Over time, a major initiative that involved blasting and fragmentation, optimization of the SAG mill in terms of discharge grates, ball size and slurry
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is the SAG mill discharge water addition rate measured variable 3[m3/hr] and SG l is the process water specific gravity [t/m ]. Step 2: SAG Mill Rock Charge The SAG mill rock charge properties (SMRC) and size distribution (smrc) are estimated by the reverseappliion of the SAG mill grate discharge function on the SAG mill discharge stream ...
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The CenterPeriphery Discharge mill has feed reporting from both ends and the product discharges . Get Price; center peripheral discharge ball mill. Overflow VS Grate Discharge Ball or Mill Why Retrofit. The cost of a ball mill conversion from overflow to grate discharge is 'fairly' affordable at 65,000 for a 13′ x 15′ mill.
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Discharge Grates. Polycorp specializes in the design and manufacture of High Pressure Moulded Wear Resistant Rubber PolyStl™ Grates. These grates are manufactured with moulded rubber on a steel frame and chord reinforcement to provide strength and flexibility to resist pressure and localized impact of the grinding charge.
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SAG Mill Circuit Example — Gold Processing SAG mill circuit example for gold processing [image: (13563)] AG/SAG Mill. AG/SAG mills are normally used to grind runoffmine ore or primary crusher product. Wet grinding in an AG/SAG mill is accomplished in a slurry of 50 to 80 percent solids. 2D and 3D simulations of particles in a SAG Mill
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Pulp Lifters and Cone Discharge of SAG Mills • Size of SAG Grate: 64 mm • The short directors is near to medium directors • Strangulation of 95 mm 697 mm 307 mm 674 mm 350 mm Cone discharge of SAG 1011 95 mm 298 mm 503 mm Material: Polyurethane Material: Rubber with ceramics
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Prediction of 3D slurry flow within the grinding chamber and discharge from a pilot scale SAG mill Author(s) Cleary, Morrison Publisher Elsevier Source Minerals Engineering Keywords dem, Grate, Pulp lifters, SAG mill, Slurry, SPH Year 2012
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slurry on the hold up of the slurry in a gratedischarge grinding mill. Powell, Morrell and Latchireddi (2001) expressed later the Marchand "k" constant as an empirical function of the open area, grate design, mill speed, charge volume and pulp lifter specifiions.
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The charge motion and breakage of particles inside the mill depends on the shell lifters design, while the discharge of ground particles is controlled by the grate and pulp lifters. The limitations imposed by poor grate and pulp lifter design become increasingly apparent with increasing size of ag/sag mills and their operation in closed circuit.
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SAG Mill Discharge Grates main function is to discharge minerals with qualified particle size and refractory stones. Therefore, if there are many stubborn minerals in the mineral, two different Grates are installed at the discharge head of the mill. The discharge Grates Grates
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AG mill. SAG mills. All grate discharge mills (ROM, primary mills, etc.) Grates are manufactured in CrMo (FMU226 type) for AG and grate discharge mills and in HighChrome for AG mills. Lifters design adapted to avoid overthrowing of balls. Design to best fit to the existing pulp lifters. Available languages. All English Mandarin.
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· Grate discharge ball mill Under the same condition, it has a higher capacity and can save more energy than other types of mills; It is better to choose a grate discharge ball mill when the required discharge size is in the range of to mm. Grate discharge ball mill is usually applied in the first grinding system because it can discharge the qualified product immediately.
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The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long. It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334 mm [ feet]. The mill is driven by two 8,500 horsepower ABB motors. Figure 2 The 34' x 20' SAG mill
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· Converting a mill from an overflow to a grate discharge arrangement leads to an increased power draw. This happens because the installation of the grate discharge arrangement enables the mill to run with a lower level of slurry due to it being no longer necessary for the slurry to build up inside the mill until it overflows from the mill discharge.
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Grate discharge mm 63 Discharge % solids wt% 72 SAG mill discharge screening Stage 1 trommel Stage 2 double deck screen Table 2 – PreSampling Data Parameter Unit Design Criteria Sampled Collected from Mine Pit on 31Oct2017 TOM Laboratory SG g/cm3 Bulk density t/m3 1 ...
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38′ X 22′ EGL GRATE DISCHARGE SAG MILL, 19,400 KW. Quantity: 1 Grate discharge 19,400 KW wraparound drive
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