Gearless Mill DrivesABB

Antamina Compania Minera Antamina S.A Peru Project One SAG Mill and 3 Ball Mill Drive Systems Capacity SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant Bechtel USA Mill Builder FFE Minerals USA Mill Size SAG Mill 38 feet/11 58 m Ball Mills 24 feet/7 32 m Ore processed Copper/Zinc Drive Rating SAG Mill 20 1 MW 9 23 rpm Ball Mills 11 2 MW 11 38 rpm

SAGMILLING Articles

Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a closing mesh

ball mill and sag mill from chinbitvaudomazlic

Nov 26 2019 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 can reach 0.1 mm The calculation shows that the crushing ratio can reach 3000 4000 while the ball mill

Sag Mill Ball Mill in mexicoroyal concepts

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 diameter powered by

SAG Mill Ball SizingGrinding Classification Circuits

With high aspect ratio SAG mills total charge to ball charge ratio should be greater than 2 up to 2.5 for a coarse mill feed say F80 > 110 mm If the mill feed size is fine say 50 mm or 30 mm then you are looking at a total charge to ball charge ratio of about 1.5 1.6.

Ball mill/SAG mill drive lubrication system IEEE

Abstract This paper describes the function and operation of lubrication systems for Ball Mill and SAG Mill Drives Provided within this paper are hydraulic schematics functional description and a general overview of system layout as well as some of the important features and factors relevant to improving the reliability of this very critical part of the grinding mill drive system.

SAG mill grinding ballCrushers Ball Mills Flotation

The sag mill grinding ball produced by ZJH minerals is high tech wear resistant products for different mines Our grinding balls are researched relies on the scientific research team composed of experts and scholars in the field of wear resistance sag mill grinding ball has the characteristics of high toughness high strength high wear resistance high corrosion resistance strong impact

PDF LARGE DIAMETER SAG MILLS NEED LARGE

In some plants the performance of large diameter ball mills is not as efficient in energy consumption as predicted from the performance of laboratory and pilot plant ball mills Ball mill scale up

Φ6.0m x 3.0m SAG Mill and Φ7.3m x 4.27m Ball Mill Liners

They have a set of Φ6.0m x 3.0m SAG Mill a set of Φ7.3m x 4.27m Ball Mill and a set of Fx 500 hydrocyclone group After one year s operation the mill liners of the semi autogenous mill must be replaced after 4 months of service and the liner of the ball mill must be replaced after 7

SAGMolycop

The Molycop range of SAG grinding balls is prepared for impact Through an innovative manufacturing process we ve produced a ball with greater impact resistance and reduced spalling compared to the standard SAG ball ready to perform in the highest impact SAG milling environments.

Sag Mill And Ball Mill In The Minig Industry

Abb Hp Ball Mill Motor Technical Data Abb hp ball mill motor technical data gearless mill drives grinding abb abbs gmd is the most powerful mill drive system in the market to power semiautogenous sag ball and autogenous ag mills this workhorse for grinding operations combines a robust service friendly and fit for purpose design to provide highest throughput .

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ball mill foundations designtutajfilm

These mills typically grind ROM ore in a single stage A large example of such a mill was converted from a single stage milling application to a semi autogenous ball mill crushing circuit and the application is well described This refers to high aspect AG/SAG mills Ball Charge Motion inside a SAG Mill With a higher density mill

SAG mill ball charge determination and its influence on

Abstract In semi autogenous grinding SAG the grinding mill inventory i.e volume of total charge volume of ball charge etc is important in determining the optimum operating condition for maximum production tph minimum specific energy kwh/t or lowest cost /t A two dimensional graphical method is presented for determining the actual ball charge within the total charge when

Sag Mill Grinding Ball factory Buy good quality Sag Mill

Low price Sag Mill Grinding Balls From Chinese manufacturer for Ball Mill Our company has the total assets of over a hundred million with an occupying area of

Freeing up milling capacity in a SAG mill ball mill

Where the SAG mill/ball mill circuit is the bottleneck in the processing plant the pebble circuit can be a significant factor in limiting overall plant capacity The pebble circuit recirculating load can be very significant depending on the ore characteristics and SAG mill operating dynamics .

Application of Operating Work Indices in Autogenous

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.

SAG Mill Grinding Circuit Design911metallurgist

With a higher density mill charge SAG mills have a higher installed power density for a given plant footprint relative to AC mills With the combination of finer grind and a lower installed power density based on the lower density of the mill charge a typical AG mill has a lower throughput a lower power draw and produces a finer grind.

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.

Difference Between Sag Mill vs Ball Millmech4study

Ball mill is a fine grinder A horizontal or vertical rotating cylinder which is filled partially with the balls of ceramics small rocks and balls made from stainless steel The ball charge of a SAG mill is about 29 to 30 By friction and influence of tumbling balls inside rotating cylinder grinds the raw material to the required fineness.

SAG millsMetso Outotec

SAG milling extends itself to many applications due to the range of mill sizes available They can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work done by a ball mill SAG mills are also an optimum solution for wet grinding since crushing and screening in these

What s the Difference Between Ball Mill Rod Mill and SAG

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

SAG and Ball Mill LinerEB Castworld SAG and Ball Mill

SAG and Ball Mill Liner system serves two purposes Protect the mill shell from wear caused by the impact and abrasion of the mill charge and to elevate and tumble the mill contents in the necessary manner to create a grinding action To achieve this the mill liner profile must be constructed from high wear resistant materials and incorporate correct geometry to help determine the elevation

sag ball mills sag ball mills Suppliers and Manufacturers

1 633 sag ball mills products are offered for sale by suppliers on Alibaba of which mine mill accounts for 1 A wide variety of sag ball mills options are available to you such as 1 year You can also choose from construction works building material shops and energy mining sag ball mills as well as from ball mill sag ball mills

difference between of sag mill and ball mill

Difference Between Sag Mill vs Ball Mill mech4study Ball mill is a fine grinder A horizontal or vertical rotating cylinder which is filled partially with the balls of ceramics small rocks and balls made from stainless steel The ball charge of a S mill is about 29 to 30 By friction and influence of tumbling balls inside rotating cylinder grinds the raw material to the required fineness

What s the difference of Ball mill SAG mill AG mill

The internal device of the ball mill grinds material into powder like substances and can rotate continuously for optimal grinding and refinery production A Sag mill is most often used in the mining fields particularly in the mining of precious metals such as gold copper silver and nickel.

Sag Mill Vs Ball Milldroemer architekten

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 commutation is an essential part of many process Autogenous and Semi Autogenous Mills

INCREASING SAG MILL CAPACITY AT THE COPPER

20 EGL SAG mill a Raptor 900 pebble crusher and two 24 x 39 6 ball mills Each mill is equipped with a 2 x 8500HP dual pinion drive system The plant was designed to process 1585 h mtpof SAG feed From startup the mill struggled to meet the required production rates Over time a major initiative that involved

Grinding Millsan overview ScienceDirect Topics

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 twelve 660 mm diameter cyclones The cyclone underflow from each line reports to a ball mill while the cyclone overflow is directed

A Method to Determine the Ball Filling in Miduk Copper

autogenous SAG Mill via an utilized method Miduk copper concentrator is located in Kerman Province Iran and its size reduction stage includes one gyratory crusher which feeds one SAG mill 9.75 dia m 3.88 length m following two parallel ball mills 5dia m 7lenght m After SAG mill a

What Is The Difference Between A Sag Mill And Ball Mill

A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes paints pyrotechnics ceramics and selective laser sintering Read more Customer Feed Back Doc s Performance Tuning

SAG Ball Mill Rubber Lining SupplierEB Castworld

The SAG Ball Mill Rubber Lining series mainly consist of shell lifter bars shell plates feed end plates discharge end grate plates discharger and so on A complete set of ball mill rubber liner consists of end liner grid type is lattice liner ends lifter bar the center ring grid type is

What s the Difference Between SAG Mill and Ball Mill

The working principle of the self grinding machine is basically the same as the ball mill the biggest difference is that the sag grinding machine uses the crushed material inside the cylinder as the grinding medium the material constantly impacts and grinding to gradually pulverize.

AG Mill and SAG Millball mills supplier

The working principle of the SAG mill and AG mill is basically the same as the ball mill machine but the barrel diameter of the SAG mill and AG mill is larger The raw ore enters the AG mill through the feeding inlet and the material is brought to a high place under the rotation of the barrel and then falls.

What is the difference between a SAG mill and ball 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.

Grinding MillsHarcliff

GRINDING MILLSBALL Mills SAG Mills AG Mills ROD Mills We refurbish design and manufacture an extensive range of high quality mills and mill components to exacting standards offering you a turnkey service that s backed by two decades of engineering expertise.

What s the difference of Ball mill SAG mill AG mill

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.

A mill power equation for SAG mills SpringerLink

where m p is in kW D is internal mill diameter meters L is internal mill length meters J is total fractional charge loading of the mill J B is the fractional mill filling by balls ε B is the effective porosity of the charge taken as 0.3 ρ s and ρ b are true densities of rock and balls tons per cubic meter respectively w c is the weight fraction of rock in water and rock in

China Mill Liner Bolts for Ball Mill SAG Mill AG Mill and

Mill Liner Bolts for Ball Mill SAG Mill AG Mill and Rod Mill Main products are as follows Alloy steel castings High strength bolts for ball mill liners mainly with high Cr middle Cr and low Cr alloy materials widely used in cement mills mine mills and coal mills We focus on the research and development of the advanced wear resistant

76b6fed7 Rocky Presentation Grinding Ball Impact Analysis

76b6fed7 rocky presentation grinding ball impact analysis of sag mill shell linerRead online for free Scribd is the world s largest social reading and publishing site Open navigation menu