SAG mills are typically operated with feed water and ore entering through a feed trunnion and into the mill shell, where breakage occurs. Then, when the material has been sufficiently comminuted, it flows through the grate as slurry and pebbles. This slurry is then lifted by pulp lifters and discharged.

Mill discharge arrangement. If the SAG and ball mills feed separate pump systems this is not an issue. 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 ...

enter a ball mill. Indeed, if a SAG mill discharge screen or trommel has 12.7 mm square openings, the top size of material moving forward to the ball mill will be 12 mm and the P 80 of the SAG mill discharge will be in the order of 4 to 6 mm, based on a normal relationship of screen opening to product size. According to Bond's ball mill

SAG Mill Liners for Discharge Grate Special Features: The material of SAG mill liner castings are low C or high C Cr-Mo Alloy steel,which depends on the specific working condition of the SAG mill. The hardness of AS2074 L2B is HB310-HB380. We can make big size SAG mill liner castings with Sodium Silicate Sand Process & Resin Sand Process.

1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw material into. powder-like structures. 3.

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. The performance of the pulp lifters in ...

P80 sag mill product is the 80 % passing particle size in sag mill discharge is true, and about solid, I mean solid content of ore (%) in sag mill (mass of dry ore/ (mass of dry ore+mass of water) S Sturmbann 6 years ago Like As % solids increases the …

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 enough is the mill shell liner and discharge grate .

Discharge of pebbles, finer rock, ball scats and slurry from mills and its flow through trommels, and into other processing operations has strong impacts on overflow ball mill performance.

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

Mill downtime reduced; SAG Discharge cone now only changed once a year during annual planned shutdown; Related Project. No items found. Kamloops . 597A Chilcoton Rd Kamloops, BC, V2H 1G6 +1 250 851 0611 1-866-858-0611 …

The Discharge End (DE) pulp lifter is a critical component of autogenous (AG) and semi-autogenous (SAG) grinding mills, having a significant impact on the throughput, efficiency and performance of mills. Underestimating the importance of an optimised liner design in a mill can lead to back-flow and carry-over processes which can ultimately ...

Discharge of pebbles, finer rock, ball scats and slurry from mills and its flow through trommels, and into other processing operations has strong impacts on overflow ball mill performance.

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.

Primary Metals - Ball Mill Discharge, Sag Mill Discharge, Tailings, Cyclone Feed; Coal Preparation - Heavy Media, Hydrocyclone, Cyclone Feed, Thickener Underflow; Non-Metallic Mining - Clay Slurries, Phosphate Slurries, Soda Ash, Potash; Sand and Gravel - Sand and Aggregate Slurries, Tailings; Power Utility - Ash Slurries, Lime Slurries; Wet Process Cement - …

The Company is investigating the condition of the mill shell, discharge bearing and the mill's gearless motor drive, all of which are important considerations in determining the time and cost required to restart the mill. Preliminary estimates indicate a restart of the SAG mill by year-end, with expected restart costs of up to $50 million.

The Bradken Vortex® Discharge System: Provides superior discharge performance for SAG and AG mills. Is ideally suited to high throughput, high solids discharge mills. Increases ore throughputs. Increases pulp lifter wear life. Our one-piece Super Vortex® Grates cover the full depth of the charge to maximize grate open area and mill throughput ...

SAG mill. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

AG / SAG Milling, SAG mill, Discharge, Comminution, Aperture, Pebble port, Grate, Classification Australian and New Zealand Standard Research Classifications (ANZSRC) ANZSRC code: 091404, Mineral Processing/Beneficiation, Fields of Research (FoR) Classification FoR code: 0914, Resources Engineering and Extractive Metallurgy,

Grate ball mill (grate discharge ball mill) is a ball milling machine used to grind various ores and other materials. Grate type ball mill is a traditional ball milling equipment for forced ore discharge by ore discharge grate.. Its basic structure and grinding process are basically the same as the overflow type ball mill, but the structure of the ore discharge part is different.

Generally, the discharge from AG/SAG mills consists of one or both of the following components: slurry (water and finer particles) and pebbles (20-100 mm). Single stage AG/SAG mills have to handle large amounts of slurry as they are generally in closed circuit with classifiers whose circulating loads reach as high as 400-500%.

SAG mill discharge control is quite involved due to few interactive variables, such as mill discharge sump level, classification hydro-cyclone variables (feed density, flow and pressure) and water feed rate to the sump. Model predictive control (MPC), which is a multi-input multi-output (MIMO) controller, is very suitable for this purpose. ...

Mill liner is the flagship business of Tega with customers spread over 68 countries with DynaMax range. Tega DynaMax range comprises of an innovative product portfolio, delivering comprehensive solutions in mill lining. DynaPrime – DynaPrime is a one stop solution for all your grinding needs in larger size SAG, AG and Ball mill.

Principle of SAG Mill operation. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%.[6][7] The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP ...

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 …

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.

This is a ¨low quality¨video of a SAG Mill´s discharge. But in any case, a SAG mill for you to see.

Throughput optimisation in milling circuits. SAG Mill Discharge. Controlling the feed and discharge of a mill is mostly a stabilisation exercise – you need to be able to quickly and accurately control the mill feed rate. If the mill feed setpoint is changed, then the actual feed rate needs to stabilise at the new target in a short period of time.

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:

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. The general arrangement of AG/SAG mills discharge system is shown in Figure 1. BREAKAGE DISCHARGE

Samples from the milling circuit were screened at 8 and 2 mm sieves. The resulting fractions, i.e. +8 mm -8 +2 mm and -2 mm, were then crushed, ground and floated to assess the respective nickel recovery. The second bench test aimed to assess desliming alternatives. It consisted in two different processing routes based on SAG mill discharge.

US3180581A US210975A US21097562A US3180581A US 3180581 A US3180581 A US 3180581A US 210975 A US210975 A US 210975A US 21097562 A US21097562 A US 21097562A US 3180581 A US3180581 A US 3180581A Authority US United States Prior art keywords trommel discharge annulus mill opening Prior art date Legal status …