Note the size of the mill Why does the diameter need to be so big image 135-6-2 SAG Mill Circuit Example Gold Processing SAG mill circuit example for gold processing image 135-6-3 AGSAG Mill. AGSAG mills are normally used to grind run-off-mine ore or primary crusher product.
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 17.5 feet. The mill is driven by two 8,500 horsepower ABB motors. Figure 2 - The 34 x 20 SAG mill
The capacity of the SAG mill is related to lots of factors such as feed size, size distribution, discharge size and grindability, etc., and it should be confirmed according to the actual situation. SM4014means it is a dry mill.
The primary ballSAG mill discharge is one of the most severe duties in mineral processing. The suction wearplate is subjected to rapid wear due to high solids concentration and the coarse nature of the slurry. Goulds developed a proprietary process to locate and mold ceramic rods into the rubber liner for the optimum combination of hardness
AGSAG Mill Liners. We have supplied pulp lifters for AGSAG Mills up to 40 ft in diameter. We are pioneers in design of both radial and curved pulp lifters and discharge systems. We also design and manufacture rubber and PolyStl grates, lifter bars, shell plates, end plates and all other associated grinding mill liner components. Learn More
Mar 20, 2020 Ball mill Ball mills are the most widely used one. Rod mill The rod mill has the highest efficiency when the feed size is 30mm and the discharge size is about 3mm with uniform particle size and light overcrushing phenomenon. SAG mill When the weight of the SAG mill is more than 75, the output is high and the energy consumption is low ...
to specific ballSAG mill operations. Mill capacity, ball size and other parameters are used to select and specify the design features for each installation. Besides removing worn grinding media from the ball mill discharge and saving energy, trunnion magnets have other advantages that appeal to SAG mill
Apr 29, 2021 Mill capacity, ball size and other parameters are used to select and specify the design features for each installation. Besides removing worn grinding media from the ball mill discharge and saving energy, trunnion magnets have other advantages that appeal to SAG mill operators
A set of experimental test work has been carried out in a continuous pilot ball mill of 0.41m X 0.56 m diameter X length at different mill speeds, percent solids and discharge mechanism. The results of study on material flow through a grate discharge tumbling mill verses an overflow tumbling mill are presented to emphasize the effect of ...
If the two stages feed the same pump system, the SAG mill usually drives the discharge arrangement. This is because the SAG mill is usually of larger diameter and may have a requirement for screening of pebbles to protect the mill discharge pumps and cyclones, and to facilitate pebble crushing.
Feb 01, 2019 The impact of the shape representation used for rock particles in a DEM model of a SAG mill on charge dynamics and energy utilisation is investigated. A 1.8-m diameter pilot scale SAG mill which includes realistic end walls and a discharge grate is used. This size of mill is used for scale-up and design processes for industrial SAG mills so understanding the effect of approximating the ...
The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mills performance 17,18,19,20,21. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill
size distributions in AGSAG mills. The existing models and understanding of grate discharge and classification are known to be flawed and have been identified as one of the key limitations in AGSAG modelling. The aim of this thesis is to improve on the current understanding of discharge in the SAG
Mill was ordered but the project was cancelled prior to installation. It is stored at manufacturer warehouses or storage sites. Manufacture and Design Grate discharge Diameter 38 Length 255 flange-to-flange EGL 22 Components Inclusions Feed chutes Discharge grates Steel pulp lifters SAG mill trommel Mill braking system Hydraulic ...
The vector d can be populated using a standard mill unit-size to production mill full-size con-version described in equation 9.9 of the JKMRC text dd x 4Q D2 L where, dx is the normalized discharge vector of a standard mill, Q is the flow through the full sized mill, D is the full sized mill diameter
The SAG mill trommel undersize is combined with the ball mills discharge and pumped to two parallel packs clusters of twelve 660 mm diameter cyclones. The cyclone underflow from each line reports to a ball mill, while the cyclone overflow is directed to the flotation circuit.
Jul 15, 2021 Scrap measurement in SAG mill vibrating screens Aim and scope Solutions are sought to quantify the mass, determine the size and shape of the grinding media that are discharged into the SAG mill through its classification system vibrating screen.
Nov 26, 2019 Based on the high throughput and coarse grind, AG mills produce coarse grinds often classify mill discharge with screens and trommel. SAG mills grinding media includes some large and hard rocks, filled rate of 9 20. SAG mill grind ores through impact, attrition, abrasion forces.
Rod mills are limited in size to 2000 kW because the longest commercial grinding rod available is 6 m long. For this reason rod mills are rarely selected in the present day environment of large AGSAG mills and large ball mills. However, it is necessary to discuss their operation because a Rod mill product has a similar slope to AGSAG mills.
Mill power where D mill diameter L cylindrical length Ld conical length n fraction of critical speed where p slurry density c grinding charge density TO slurry toe angle for overflow discharge mills 3.395 rad T for grate discharge mills s, T geometrical parameter Ch e gLN r r zr motion r zr r r z power p Nr r zr ...
The change from a SAG mill to an HPGR in primary grinding results in a lower overall power consumption the comminution circuit. In comparison to using staged crushing as ball mill feed prepara-tion, replacing the tertiary circuit with an HPGR frees up ball mill capacity or reduces the size of the ball mills and grinding media consumption.
Each SAG mill two total is a 40 ft diameter by 24 ft long, grate discharge, semi-autogenous grinding mill. Slurry and pebbles exit the mill after passing through the mill discharge grate and pebble ports onto a trommel screen fixed to the mill discharge trunnion.
The SAG mill feed conveyor discharges ore, along with pebble recycle and grinding media, into the feed chute of the SAG mill together with mill feed dilution water. The SAG mill is fitted with discharge grates to retain grinding media and larger pebbles while allowing smaller particles to discharge from the mill. SAG mill grinding media is also ...
Mar 15, 2021 The SAG mill agreement has come about as First Majestic ordered a complete new SAG mill package, which, Condor says, is now superfluous to its requirements. The SAG mill has a mill diameter of 24 ft 7.3 m and an effective grinding length of 18.5 ft and a structural charge mass of 315 t, Condor Gold said.
SAG Plant Diameter, feet Diameter, feet Long, feet Flow, m 3h Area, 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 ...
SAG Plant Diameter, feet Diameter, feet Long, feet Flow, m 3h Area, ... 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
discharge grates, along the pulp lifters and its discharge from the mill is an important contributor to the efficiency of the grinding process within a SAG mill. Poor transport of ... three dimensions to analyse the full slurry flow for a 1.8 m diameter by 0.6 m long AGSAG pilot mill. This provides detailed information on the internal flow of ...
Oct 15, 2020 The SAG mill will be charged with high chrome grinding media at a diameter of 125mm by means of the grinding building hoist and ball kibble. The discharge of the SAG mill will be received at a cyclone feed hopper and pumped to the cyclones.
The trunnion magnet is mounted at the SAG ball mill discharge point and is used in place of a trommel screen. ... approximately 28 in. long, covers an arc of about 210 , and attracts chips and scats to the inside diameter of the barrel. As the ball mill slurry discharges through the barrel, eight strategically placed lifters inside the barrel ...
A high aspect 36ft x 18ft EGL, 13 MW SAG mill with recycle crusher was selected for the single stage SAG mill configuration. This design is in line with the selection dictated in Table 2. The owner understood the circuit selection had some technical risk associated and set about mitigating these points during design and project readiness.
A SAG mill is generally used as a primary or first stage grinding solution. Attrition between grinding balls and ore particles causes grinding of finer particles. SAG mills are characterized by their large diameter and short length as compared to ball mills. SAG mills are primarily used at gold, copper and platinum mines with applications also ...
consideration of a larger mill installation with diameter at the design stage. Between 2001 and 2008, a limit of 22 MW was placed on SAG mill drives as GMDs by some operators and principal motor designersmanufacturers until the reasons for known problems in design or manufacturing were better understood and resolved.
Sep 20, 2018 A Discrete Elements Method DEM study of load movement within a SAG mill 12,192 7620 40 25 in normal operating conditions is performed. The purpose is to determine how the geometry of the lifters affects the kinetics of the load inside the mill. Specifically, the changes produced by the incorporation of inclined lifters and spiral or helicoidal pulp lifters to the kinetics are ...
Jun 06, 2016 The ratio of the trunnion thickness to trunnion diameter in a mill of 2,134 m diameter is almost twice that of a mill of 5,8 m diameter, i.e. a ratio TD of 0,116 to 0,069 for the large mill. However the design stress levels at the trunnionhead transition in the case of the large mill are almost 250 of those in the small mill.
Jan 10, 2021 done in a SAGball mill circuit with no coarse recycle classification of the SAG mill discharge. The primary grinding mill is an 18 ft. diameter x 9 ft. EGL, 1500 HP variable speed SAG mill and the secondary mill is a 13 ft. diameter x 21 ft. long, 2000 HP fixed speed, ball mill.