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If the reaction of ingredient be much faster, the added water would be controlled . If the reaction of mill capacity be much faster, the rate of feed would be set. [8] 8. Slide 8 effective factors for circulating load One of the problems of mentioned strategies is interaction between agents.

Jan 01, 2005· Traditionally, many engineers have approached SAG circuit design as a division of the total power between the SAG circuit and ball-mill circuit, often at an arbitrary power split. While this approach may result in a successful design, it ignores the critical decision of determining the correct power split between the SAG and ball ...

Large grinding equipment is typically split into multiple segments or cans in order to make their manufacturing and transport to a mine site feasible. For example, a large 40 foot diameter SAG mill without liners weighs in excess of 3.6 million lbs (1.6 million kg), making it impossible to make, ship, or lift this equipment in one piece.

the SAG mill and ball mill depends on the energy requirement between both duties. SS SAG mills combine the function of a SAG mill and ball mill …

The energy split between ball and rock during collisions is important for damage. ... Flow of rock and balls in the pilot mill for SAG charge (case 3). The particles are coloured by their speed. Fig. 5 shows a typical breakage sequence in which a rock particle at the bottom of the small cascading zone fractures.

Sag Mill Circuit In Iron Ore. The zourerat iron ore mine has two 1.8 m wide hpgr units treating 1400 th each of aerofall mill pebbles.The feed is 25 1.6 mm and has a ball mill work index of 1214 kwht.The iron ore has low to moderate abrasion characteristics.21 shows …

Ball mill and rod mill are suitable for different materials. 1. Selection by material's hardness. Ball mill has a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc. Rod mill is suitable for grinding brittle material, such as rare metals. 2.

Our SAG Semi-Autogenous Grinding Mill Liner and AG Autogenous Grinding Mill Liner are manufactured to the highest industry standard for Autogenous Grinding (AG), Semi-Autogenous Grinding (SAG), Primary / Secondary and re-grind rod or ball mills. MGS Casting mill lining system designed by our highly trained, and dedicated team throughout the ...

A pilot plant scale SAG mill suitable for use in design of a commercial scale SAG mill. The ball mill has a cylindrical outer chamber having flanges at opposed ends. The cylindrical outer chamber contains a removable grinding chamber in the form of a sleeve. ... and power split ratio between a ball mill and a SAG mill. This could include the ...

difference between sag mill from ball mill - keuken310. difference between sag mill and ball mill - Home>difference between sag mill and ball mill> Ball mill - Wikipedia The ball mill is a key piece of equipment for grinding crushed materials, and it is widely used in production lines for powders such as cement, silicates, refractory material, fertilizer, glass ceramics, etc. as well as …

Difference Between Sag Mills. Difference Between Sag Mill And Ball Mill. Sag is an acronym for semiautogenous 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 128m in diadifference between sag mill and ball mill.

split between the SAG mill and the ball mill. 1. INTRODUCTION Autogenous and semi-autogenous grinding has now been used commercially for over 40 years. The last two decades have seen great progress in this field and distinctly different approaches taken by various mill designers. Not all of this experience relates to the gold

The demo contains a pre-programmed SABC circuit and 3 rougher cells (SABC: SAG mill closed with a recycle crusher, followed by closed Ball mill / Cyclone circuits). The functions demonstrated in the demo exercise are mass balancing, model building and simulation.

Sag Mill And Ball Mill Difference. Difference between sag mill vs ball mill mech4study oct 12 2017 today we will learn about difference between sag mill vs ball mill a mill is a machine by which solid or hard materials are broken into smaller pieces by means of grinding crushing or cutting this. Get Details Egs Stand For In Sag Mill Power. Read ...

Traditionally, many engineers approached SAG circuit design as a division of the total power between the SAG circuit and ball-mill circuit, often at an arbitrary power split. If done without due consideration to ore characteristics, benchmarks against comparable operating circuits, and other aspects of detailed design (including steady-state ...

Abstract: A pilot plant scale SAG mill suitable for use in design of a commercial scale SAG mill. The ball mill has a cylindrical outer chamber having flanges at opposed ends. The cylindrical outer chamber contains a removable grinding chamber in the form of a sleeve. The removable grinding chamber has a diameter of 2-5 feet and a ratio of ...

AG/SAG mill product that needs additional grinding in the ball mill, or "Corrected Ball Mill Feed." T2' is the 80% passing dimension of the Corrected Ball Mill Feed. Figure 1. Comparison of the Particle Size Distribution Slopes Figure 2. Relationship Between the Transfer Size Distribution Slope and T 80 or AWi0/BWi Figure 3.

Ball Mill Equipment Wikipedia. FOB Reference Price:Get Latest Price 2 Ball mill Wikipedia The ball mill is a key piece of equipment for grinding crushed materials and it is widely used in production lines for powders such as cement silicates refractory material fertilier glass ceramics etc as well as for ore dressing of both ferrous and nonferrous metals of both ferrous and …

These two types of mills are filled with varying compositions of grinding media. SAG mills contain balls of up to 150mm in diameter that occupy 5%-18% of mill chamber volume. Ball mills, conversely, contain grinding media up to 50mm in diameter, occupying between 25% - 40% of mill chamber volume.

Attrition mill is a type of grinding mill by kinds of media to crush lump to powder-like substances. The impact can be rock on rock such as in an Autogenous Grinding (AG) mill, rock and a small ball charge (~10%), used in Semi Autogenous Grinding (SAG) mills, balls of various sizes in Ball Mills and less commonly these days, steel rods in Rod Mills.

Sme 2009 Impact On Grinding Mill Design And Recent . breakage tests do not include ball mill grinding dataased on the 2009 cim paper starkey and samuels, 2009, the ratio of sag to ball mill grindability is an important factor in achieving a reliable sag mill circuit design because that ratio reveals the best and most practical split for sag and ball mill energy for the ore …

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 …

A pilot plant scale SAG mill suitable for use in design of a commercial scale SAG mill. The ball mill has a cylindrical outer chamber having flanges at opposed ends. The cylindrical outer chamber contains a removable grinding chamber in the form of a sleeve. The removable grinding chamber has a diameter of 2-5 feet and a ratio of diameter:length in the range of 3:1 to 1:1.

Traditionally, many engineers approached SAG circuit design as a division of the total power between the SAG circuit and ball-mill circuit, often at an arbitrary power split. If done without due consideration to ore characteristics, benchmarks against comparable operating circuits, and other aspects of detailed design (including steady-state ...

The energy split between ball and rock is also important for exceeding the elastic threshold and creating damage. Comparison of the predicted particle sizes at the completion of ten minutes of ...

difference between a sag and a ball mill. difference between a sag and a ball mill [ 46 - Ratings ] The Gulin product line, consisting of more than 30 machines, sets the standard for our industry, influence of feed size on ag/sag mill performance,, 10 Sep, SAG MILL GRINDING DESIGN Significant differences between macro and micro grindability relationships, and the.

After closed-circuit secondary crushing, the SAG mill feed 80% passing (F80) size was 25 mm to 30 mm. Installed grinding power is split equally between the two mills with the SAG mill fitted with a variable speed drive (VSD). SAG discharge screen oversize ('pebbles' or 'scats') was recycled through an 185 kW pebble crusher.

The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged …

Ball mill is a secondary, and it is used after the SAG mill. SAG mill breaks the raw material into pieces for the further grinding. How does ball mill work at high speed? It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell. A ball mill consists of a hollow ...

The split of energy between colliding particles is critical to breakage prediction. Abstract A computational model for use with DEM (Discrete Element Method) is proposed for the five mechanisms applying to particle comminution in AG, SAG and coarse feed ball mills.

Autogenous grinding mill: in this grinding mill, rotating drums throws in large balls of matter in a rapid motion. This causes the ball to break and make smaller particles. SAG mill: SAG is the short form of semi autogenous grinding. The difference between autogenous and SAG mills is, it uses balls to grind like ball grinding mill.

"In recent years, the trend to smaller top-size ore feed into SAG mills has been matched by a trend toward smaller but more balls in the SAG mill charge. High ball-to-rock ratios and low overall mill charge levels are now widely used. These practices can result in periodic loss of rock charge and ball-on-liner damage," said Royston.

1. Short-cylinder ball mill: The length (L) of the cylinder is less than twice the diameter (D) of the cylinder, that is, the ball mill with L ≤ 2D is a short-cylinder ball mill. Single-bin structure ball mill, which is mainly used for coarse grinding or primary grinding, has high efficiency. 2. Medium-long cylinder ball mill, that is L = 3D. 3.

The SAG mill discharge is pumped to a cluster of thirteen cyclones for classification. The cyclone overflow is fed onto the trash screen while the underflow is split between two ball mills for regrinding and onto a scalping screen. The discharge from the ball mill is pumped to the cyclone cluster for classification. The scalping screen

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) motor. [8] A SAG mill with a 44′ (13.4m) diameter and a power of 35 MW (47,000 HP) has been designed. [9] Attrition between grinding balls and ore particles causes grinding of finer particles.

As with most models, the power split between the SAG and ball mills is evaluated and the transfer size (T 80) necessary to balance the power draw between the two stages is estimated. If that transfer size is within the specified limits, then the calculation proceeds to calculate the E SAG and E bm using that transfer size.

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. Accordingly, the latest 40 ft dia. SAG mill is rated at 29 MW and 78% C.S., with a 42 ft dia.

SAG hardness. These breakage tests do not include ball mill grinding data. Based on the 2009 CIM paper, the ratio of macro to micro grindability is an important key to achieving a reliable SAG mill design because that ratio reveals the …

W Total = WSAG + W Ball Mill (2) Where W is the grinding mill work input in kWh/t. For the above reason, the Starkey SAG mill was built in 1991 to measure the energy required to grind ore to a size of 80% passing 10-mesh or 0.17 mm (T80) by grinding small drill core samples to precisely that size.

The 7.92-m diameter by 2.74 m Allis Chalmers SAG mill is equipped with 2,387 kW variable speed motor and operates between 10-15% ball charges depending on ore hardness. Variable speed control provides additional flexibility for processing of various ore types. The discharge from the SAG mill is split between fine and coarse material.