sag mill discharge diameter

Sag Mill Discharge Diameter

SAG mills (see Figure 1) O is the depth of the pulp lifter expresse d as a fraction of mill diameter; and k i and k j are constants. 149 For large-scale mills, the pulp discharge flow can be determined by combining equations (4) and (5) as follows: m Q d= J (8) The calculation procedure can be transformed in an iterative numerical sequence.

(PDF) Influence of feed size on AG / SAG mill performance

performance of a large diameter sag mill is shown in Figure 4 page I-208. ... but the specific energy decreases more) because the mineral goes faster to the mill discharge, leaving a …

Ball Mills - Mineral Processing & Metallurgy

The diameter of the discharge trunnion is larger than that of the feed trunnion giving an easy material flow through the mill. The discharge trunnion can be furnished with a trommel screen to remove rod fragments, wooden chips etc. from the mill discharge. Rod Mill with End Peripheral Discharge: Used when a moderately coarse product is desired.

AMIT 135: Lesson 6 Grinding Circuit – Mining Mill Operator ...

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)] AG/SAG Mill. AG/SAG mills are normally used to …

Goulds SRL - irp-cdn.multiscreensite

The primary ball/SAG 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

SAG Discharge Cone - progressiverubber

PRI worked closely with the customer to develop a design that would help decrease their downtime on their 34' diameter by 17' long SAG mill. The cone supplied with PRI ceramic Matrix technology lasted over 12 months! This also led to more business at the site with our unique rubber and ceramic molded components.

Paper # 25 - Copper Mountain Overview on the Grinding ...

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 - …

Advanced Simulation for Semi-Autogenous Mill Systems: A ...

The model output variables are: power-draw, load level, ball load, mineral discharge rate and size distribution, water discharge rate, ball throughput, bearing pressure, pebble throughput, and toe and shoulder angles of the internal load. 2.1 SAG mill model The particles fed to the mill are ground in the milling chamber and subsequently

Grinding Mill - an overview | ScienceDirect Topics

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.

China 12/10 F -Ah Mill Discharge Slurry Pump - China ...

HS Code. 8413701090. Product Description. 12/10F-AH Ball / Rod / SAG Mill Discharge Slurry Pump. Naipu is one of professional of slurry pump, Gravel Sand Pump, Dredging Pump and Spare Parts. The Pumps can totally interchange withHH M L SP AF G Series. We can do spare parts according to the drawing or sample . lIke pump casing, Impeller ...

Mill drives: the desire for increased power and the ...

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 designers/manufacturers until the reasons for known problems in design or manufacturing were better understood and resolved.

Minerals - Group

SAG mill discharge ball mill discharge rod mill discharge Ni acid slurry coarse sand coarse tailings phosphate matrix minerals concentrate heavy media dredging bottom/fly ash, lime grinding oil sands mineral sands fine tailings phosphoric acid coal flotation sugar beets process chemical pulp and paper FGD waste water ® Horizontal Pump Models

Autogenous AG & SAG Mills for Sale - 911Metallurgist

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 used when the crushed ore pieces are hard enough to perform all the grinding.

SAG MILLS OPTIMIZATION: IMPLEMENTATION AND …

SAG Plant Diameter, feet Diameter, feet Long, feet Flow, m 3/h 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 …

Ball Mill - an overview | ScienceDirect Topics

3.5.2.2 Ball Mills. The ball mill accepts the SAG or AG mill product. Ball mills give a controlled final grind and produce flotation feed of a uniform size. Ball mills tumble iron or steel balls with the ore. The balls are initially 5–10 cm diameter but gradually wear away as …

SAG Milling in Australia -Revised Submission

efficiency of the mill discharge system for slurry and pebble removal, and lining ... limited mill size for many years to 36-ft diameter. Today, 20 MW mills are in operation and ... circuiting of the SAG mill and ball mill additions topping the list.

Grinding Balls For Ball Mill_Goldpro

Therefore, compared with the SAG mill, the diameter of ball mill,the particle size and the ball size is smaller;the running speed is relatively decreased and the filling rate is higher. The grinding balls mainly impact and grind minerals by cascading, and can't discharge unless the balls reach the specified size,which required high wear ...

SAG Mill | Autogenous and Semi-Autogenous Mills | FL

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.

Grinding Circuit - an overview | ScienceDirect Topics

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.

China Sag Mill Use in Chemistry&Metallurgy&Refractory ...

AG Mill&Autogenous Mill&SAG Mill: 1.CITICIC can produce below 12m AG Mill&SAG Mill 2.AG Mills&SAG Mills:2.4x1.2~13x4.0m ZTIC can produce below 12m autogenous mills(AG Mill) and semiautogenous mills(SAG Mill).autogenous / semiautogenous mills(AG Mill &SAG Mill) are utilized to grind run-of-mine rock or primary crusher discharge.especially medium hard and …

Toward a Simple Approach Determining Single Stage SAG mill ...

discharge function is expressed as the ratio of two numbers close to zero, ... (mill diameter/mill length) of autogenous and semi autogenous mills varies widely and can be as high as three or as ...

Semi-autogenous grinding (SAG) mill liner design and ...

Semi-autogenous grinding mills (SAG mills) are tumbling mills that most commonly have a shell diameter-to-length ratio of around two. With this high aspect ratio, SAG mills generate both thrown and cascading ball-milling actions with shell linings shaped to lift and to throw alloy steel grinding balls of up to 150 mm (6 in.) in diameter. These

(PDF) Multi-component AG/SAG mill model

Tracking the mill performance showed that the mill power consumption decreased from 9.49 to 6.63 kWh/t (a nearly 30% reduction), P80 of the mill …

AN UPDATED DATA SET FOR SAG MILL POWER MODEL …

SAG mill power draw models are used in mill design and grinding circuit modelling to predict ... D, mill effective diameter, (m) the nominal diameter inside the liners of the mill. Determined as ... pulp slurry, as measured at the mill discharge.

AG - Autogenous & SAG Semi-Autogenous Mill Design …

Obviously, the SAG mill is consuming more and the ball mill less power than was predicted by the empirical method, but the overall total is 99.5% of the predicted total. Examples The Hemlo gold project of Teck-Corona (1000 mtpd) provides an example of mill sizing using the empirical calculation method alone.

Polycorp - Mining

AG/SAG Mill Liners. We have supplied pulp lifters for AG/SAG 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

Optimizing Performance of SABC Comminution Circuit of the ...

F8.8 4.8 m SAG mill ('diameter' represents nominal diameter, and 'length' of the mill represents the effective grinding length inside the end liners and discharge grates), F6.2 9.5 m overﬂow ball mill and closed stockpile (maximum storage capacity at 120,000 t, effective storage capacity at 39,000 t). Minerals 2016, 6, 127 2 of 9

Simulation of Material Transport in a SAG Mill with ...

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 …

SAG Mill Liner Design - Mineral Processing & Metallurgy

The chord produced by spacing equal to two times mill diameter (ft.) or 470 mm (18.8 in.) is desirable. Shell liners so designed can minimize charge "packing" problems and still provide sufficient lifts for normal mill action to lift the charge and hence draw power and do work (comminution). Mill end plate bolt spacing.

Magnetic Separation Technology Can Improve Grinding ...

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 ...

SAG MILL DISCHARGE SCREENS-TROMMEL vs. …

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

Prediction of 3D slurry flow within the grinding chamber ...

As SAG mill sizes continue to increase in both length and diameter, the required volumetric removal rate increases faster than the cross sectional area of the mill. Hence rate of slurry removal can become a throughput constraint for large mills as a pool of slurry will accumulate in the mill ( Nicoli et al., 2001, Cleary et al., 2006 ).

What's the Difference Between SAG Mill and Ball Mill ...

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.

SAG Mill Grinding Circuit Design - 911metallurgist

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 circuit (Mosher et al, 2006). A variant of this method is to direct pebble-crushing circuit product to the ball-mill sump for secondary milling: while convenient, this has the ...