SAG mill trommel or screen – OneMine Mining and Minerals … The SAG mill discharge is screened on a rotating trommel screen. … ball load, mill speed, trommel screen aperture, pebble … AUTHOR: M J Daniel: PUBLISHED: 2009: TITLE:
of the SAG mill is transferred onto a vibrating screen. The oversize material is crushed in a pebble crusher, and the undersize is combined with the ball mill (6.71 × 9.91 m) discharge and sent to the cyclones. The SAG mill in phase 1 uses two 4100 kW synchronous motors and works with a constant 10.5 rpm rotational speed in two directions, and ...
relieve slurry from the mill onto the discharge screen, which is fitted with 17 mm aperture panels. The 4.27 Ø m x 12.94 m EGL secondary ball mill is fitted with a 4125 kW motor and operates in overflow configuration. Ball mill discharge slurry gravitates to the feed of the SAG mill discharge screen situated above the mill discharge hopper.
The mill's SAG/ball/flotation circuit was initially designed for 35,000 mt/d. As mentioned earlier, a secondary crushing circuit had been installed to boost the mill tonnage rate to 40,000 mt/d. However, the increased circulating load led to overloading of the original 12 x 28-ft single-deck SAG mill discharge screen.
TRUNNION MAGNET WITH BALL MILL DISCHARGE The trunnion magnet is an enhanced system for separation and removal of balls, chips or scats in a typical ball or SAG mill operation. The trunnion magnet is mounted at the SAG ball mill discharge …
In 2017, First Quantum approached Schenck Process regarding the supply of mill discharge screens for Cobre Panama's SAG mills, which are among the biggest in the world. The resulting design was a monster mill discharge screen, that was later dubbed the 'Beast'.
Pulp lifters, also known, as pan lifters are an integral part of the majority of autogenous (AG), semi-autogenous (SAG) and grate discharge ball mills.
JKSimMet Course Part 1. Apr 03 2014 nbsp 0183 32James Didovich 2014 JKSimMet V6 18 Ex F3 SABC Circuit Draw the following circuit Ore is fed into a SAG mill SAG mill has a pebble crusher closed with a screen on SAG Discharge SAG Discharge screen U S feeds a cyclone cluster Cyclone underflow feeds a ball mill in closed circuit There are water additions to the SAG
Relation between Sag mill solid and product P80! Both are dependent on feed size. Dependent on Volume % solids in SAG mill. Dependent on ball charge volume. Hardness of ore. Recirculation load. Dependent on P80% size. All other parameters are secondary. In general Sag mill solids are kept at 70% by wt. Operating grinding circuit is an art.
SAG Mill Discharge Slurry Pumps are the most comprehensive range of Centrifugal Slurry Pumps for use in mining, chemical and general industry applications. It is including Heavy Duty Mill Discharge Slurry Pump, Horizontal Centrifugal Mill Discharge Slurry Pump and SAG Mill Discharge Slurry Pump. They are designed for heavy duty applications such as mill discharge, power sector and tailings as ...
SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING Tony Moon, RTZ ... The diameter of the trommel for the 34-foot mill is 13.5 feet and the screen surface length is almost 13 feet. This gives us about 550 square feet of screen area, for roughly 30,000 tons a day or 1,300 tons an hour. These trommels were
The SAG mill discharge screen size is 8 mm. The -8 mm stream is diverted to a cluster of cyclones. Material at +8 mm from the SAG mill discharge screen is sent to a pebble crusher (Hydrocone H6000 Pebble Crusher, nominal gap 8 mm to 12 mm) at a feed rate of 40 tph to 90 tph. The P80 of the feed to the pebble crusher is approximately 60 mm while ...
The existing SAG Mill Discharge screen had a single deck design of 3.6m x 8.5m and handled less than 1,900 TPH when screening at 13mm. This quickly became the process limitation. In an attempt to assist the movement of material off the deck and reduce the frequency of overloads, the customer decided to incline the screen and upgrade the drive.
The SAG mill pinion energy, W SDT (kWh/t) and SAG discharge Bond ball mill work index, S d-BWI (kWh/t), are then used to calculate the total energy to grind the ore from 80% passing 152 mm to 80% passing the client specified final product size P 80.This …
The SAG mill trommel screen provides a simple mechanism to classify large volumes of mill product.. Many designers and mill operators believe that the benefits of simplicity and the ability to handle throughputs in excess of 5 000 tph of solids make trommels the …
Hatch has awarded Joest an order to build a 3 m x 6 m double-deck SAG mill discharge screen for the Thompson Creek Mining Endako Expansion Project. This discharge screen is part of the major expansion Thompson Creek Mining is currently undergoing to increase the capacity of its Endako mine. The Joest screen will be fitted with PU screen panels ...
• SAG Mill Vibrating Screen Oversize • Ball Mill Discharge Technique/Equipment Solution − Suspended Electromagnet − Suspended Magnetic Drum − Trunnion Magnet Pebble Crusher Figures 3 and 4 shows the location of a suspended electromagnet over a pebble crusher conveyor. Fig. 1. Cone Crusher Mantle damaged by
The result is a screen that measures 4.3 metres wide and 9.7 metres long. Like Schenck Prosses Beast SAG mill screens, the excitation force of the new SLD4397DXX 'mega' screen is delivered by four DF704 exciters mounted on 2 unitary beams.
5 to 50 TPH SAG Mill. Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24′ (14.5 m) in diameter on 3,300 HP, the 911MPE Semi & Fully Autogenous Mills tumble crushed ore without iron or steel grinding media. They are …
(SAG) mills. In order to optimize this section, the skills to accurately model and understand its underlying mechanisms are required. The literature exposed a clear lack of previous research on the influence and performance of grate/pulp lifter design in AG/SAG mill discharge. The current understanding from
Perseus Gold Mining had been suffering critical wear rates of the screening media equipping their SAG Mill discharge screen because of some crucial reasons like: High drop fall of the ore from the SAG Mill discharge to the screen deck – ca. 1m; Big …
SAG mill product feeds two parallel ball mills of 6.6 m×11.1 m (internal diameter×length), each with a 9.7 MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and 78.5% critical speed. The SAG mill trommel undersize is combined with the ball mills' discharge and pumped to two parallel packs (clusters) of ...
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 …
For sag mill discharge screen For rinse and drain screen operation For efficient sizing and dewatering operation with screen opening size ranging from 8 mesh to 60 mesh (3 mm to 250 micron) For polishing and dewatering of spiral clean coal For maximum dewatering of fine
In 2017, First Quantum approached Schenck Process regarding the supply of mill discharge screens for Cobre Panama's SAG mills, which are among the biggest in the world. The resulting design was a monster mill discharge screen that was later dubbed the 'Beast'.
Installation of a General Kinematics STM-SCREEN enables Copper Mountain Mining to eliminate a bottleneck caused by the concentrator's existing SAG mill discharge screen, allowing the company to cut its screen maintenance expenses and freely plan for further plant capacity expansion.
By combining with SAG discharge and screening on the SAG discharge screens, top size control to the ball-mill circuit feed is maintained while still unloading …
The SAG mill disch arges onto a trommel, ... and the SAG screen oversize. ... The improvement in the mill discharge sample point will enable the collection of more accurate .
A SAG Mill trommel screen lets you control the true discharge size of your SAG mill or the transfer size to the downstream Ball Mill circuit. A well sized trommel should not let rocks pass to the Ball Mill if they are to be more than say 5/8″ or 16mm In the image case below, strangely … Read more
SAG Mill Trommel Screen. A SAG Mill trommel screen lets you control the true discharge size of your SAG mill or the transfer size to the downstream Ball Mill circuit. …
the primary crusher performance and proper control of the ratios for the SAG mill feeders drawing the ore from the stockpile. The ball mill grinding efficiency was poor and could be indicated by the fraction < 125 µm of only 5-9 % or x. P, 80: >400 µm in the mill discharge. This was deemed due
The Trunnion Magnet is mounted at the SAG mill discharge point and used in place of a trommel screen. It consists of a barrel or "blind trommel" that is mechanically attached to the trunnion or discharge of a ball mill. The barrel rotates around a fixed assembly of …
receives combined ball mill a nd sub – screen deck size SAG mill discharge material via a 20/18 centrifugal pump running with a 1700 kW variable speed motor and gearbox.
The SAG Mill discharge stream is frequently classified with a screen deck. The screen deck scalps the oversize material, which in turn is routed to the pebble crusher and back to the SAG mill feed. A new approach has been developed to magnetically …
