sag mill disadvantage

sag mill disadvantage

  • SAG Mill Grinding Circuit Design
    Semi Autogenous Design FactorsSag Mill Operation ExampleProcess Plant DescriptionSag Mill Design and SpecificationOperating Problems Since CommissioningDesign Changes and Future Operating StrategiesThe design of large mills has become increasingly more complicated as the size has increased and there is little doubt that without sophisticated design procedures such as the use of the Finite Element method the required factors of safety would make large mills prohibitively expensive.In the past the design of small mills, up to +/- 2,5 metres diameter, was carried out using empirical formulae with relatively large factors of safety. As the diameter and length of mills increased several crit...
  • Difference Between Sag Mill vs Ball Mill mech4study

    Oct 12, 2017· SAG mill make use of steel balls included with some large and hard rocks for grinding. These mills utilize the balls in making the large fragments of materials broken into pieces. The ball charge of a SAG mill is about 9% to 20%.This process takes place inside the large rotating drum of SAG mill which is filled with balls partially.

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

    Grinding mill machine is an essential part of many industrial processes, there are mainly five types of mills to cover more than 90% materials size-reduction applications. Do you the difference between the ball mill, rod mills, SAG mill, tube mill, pebble mill? In the previous article, I made a comparison of ball mill and rod mill. Today, we

  • Autogenous & Semi-Autogenous Grinding Circuits

    Semi-autogenous plus ball mill has been the “work horse” of mills. SAG vs Ball Mill Advantages . AG & SAG Mill Grinding Compared Which is Best. Grinding rods and balls can be obtained in uniform sizes, weights and of a specified quality. Their action in a mill can be reasonably predicted.

  • Mill (grinding) Wikipedia

    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.

  • Related items: Mortar and pestle, Expeller, Extruder
  • Variable Speed SAG Mill

    There are several advantages and disadvantages of operating SAG mills with variable speed drives. Discussion in this paper will focus on the effects of variable speed SAG milling in relation to mill liner wear, grinding media consumption, and mill operating availability.

  • The Selection and Design of Mill Liners MillTraj

    The Selection and Design of Mill Liners . Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U$25,000 per advantages and disadvantages: 1.

  • Closed Circuit Grinding VS Open Circuit Grinding

    Metallurgical ContentOpen Circuit GrindingClosed Circuit GrindingGrinding Circuit Process Control VariablesGrinding Operating Costs The simplest grinding circuit consists of a ball or rod mill in closed circuit with a classifier; the flow sheet is shown in Fig. 25 and the actual layout in Fig. 9. This single-stage circuit is chiefly employed for coarse grinding when a product finer than 65

  • Ball Mill Critical Speed & Working Principle YouTube

    Jun 19, 2015· Besides dissipating a significant fraction of the total energy consumed by the mill (for example, the outer row of 50 mm diameter balls in a 4 meter diameter mill

  • Grinding mills Metso

    Every mining operation has a unique grinding process. Metso has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.

  • Choosing a SAG Mill to Achieve Design Performance

    Choosing a SAG Mill To Achieve Design Performance John Starkey1, Principal Consulting Engineer Sami Hindstrom2, Manager, Grinding Travis Orser2, Project Manager, Grinding 1 Starkey & Associates Grinding Design and Process Engineering 336 268 Lakeshore Rd. E. Oakville, Ontario L6J 7S4

  • SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING

    SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING Tony Moon, RTZ What I’d like to talk about is probably one of the nastiest bits of mill design for a grinding circuit, and that is the choice of what do you use on a SAG mill discharge? Do you use vibrating screens or trommel screens? What many of you probably don’t realize is that at

  • Grinding Mill Design & Ball Mill Manufacturer

    All Grinding Mill & Ball Mill Manufacturers understand the object of the grinding process is a mechanical reduction in size of crushable material. Grinding can be undertaken in many ways. The most common way for high capacity industrial purposes is to use a tumbling charge of grinding media in a rotating cylinder or drum.

  • Ball Mill Principle, Advantage, Disadvantage [Hindi

    Nov 27, 2018· Ball Mill Disadvantage Ball mill Use Ball mill construction Ball mill Working We hope you will like this video. If you really enjoyed this video, please subscribe to

  • SAG Mill Optimization using Model Predictive Control

    SAG Mill Optimization using Model Predictive Control ANDRITZ AUTOMATION Semi-Autogenous Grinding mills can be optimized for maximum ore throughput or maximum grinding energy efficiency. SAG mill, model predictive control, MPC, expert systems, optimization, Laguerre

  • ME PolyFIT ME Elecmetal · Global Presence and Distribution

    ME PolyFIT™ SAG and ball mill products provide yet another trusted alternative in the wide array of solutions offered by ME Elecmetal. ME Elecmetal designs and sells 100% rubber, rubber and plate steel or cast alloy composite liners — or a combination of the three materials.

  • Overload Detection in Semi-Autogenous Grinding: A

    Detecting the onset of overloading in a semi-autogenous grinding (SAG) mill is a challenging task for operators to perform due to the complex and nonlinear nature of an overload.

  • Mill lining optimization increases wear life by 36 Metso

    Sep 06, 2017· Mill lining optimization increases wear life by 36% at TISCO. Special ore properties have made it very difficult for TISCO Yuanjiacun Iron Mine to find a mill lining that lasts. Metso’s optimized metallic mill lining solution puts an end to years of application testing. Nevertheless, Metso is continuing to improve the solution even further.

  • Open Circuit Configuration IsaMill™ Advantages Isamill

    The product separator is one of the key advantages of the IsaMill™ design. The 8 consecutive grinding chambers, and high tip speed of the separator means that the mill constantly delivers sharp sizing performance. There are no screens or trommels to fail or block, any particle that leaves the mill must escape the same centrifugal forces.

  • Advantages of SER drives for SAG mills GoHz

    Dec 19, 2014· Advantages of the wound rotor/SER drive are: If the SER converter drive fails, the drive can be switched to fixed speed bypass starting the usual way with the LRS. The converter only needs to be sized for 15-20% of the total motor rating with associated reduction in floor space, air-conditioning etc.

  • Used Ball-mills For Sale

    Buy used Ball-mills from A.M. King Industries. We can help guide you to the best solution for your equipment needs.

  • Autogenous Grinding Information

    Another requirement is that the finer sizes should break easily and should be removed from the mill, otherwise, there will be a critical size buildup. Autogenous grinding has two advantages, (1) it reduces metal wear and (2) eliminates secondary and tertiary crushing stages. Thus it offers a savings in capital and operating costs.

  • Overflow Versus Grate Discharge Ball Mills: An

    Overflow Versus Grate Discharge Ball Mills: An Experimental Investigation It has been widely accepted to go for grate discharge ball milling when a coarse product is preferred or to avoid production of extreme fines, but overflow discharge mills are preferred

  • RoM BALL MILLS A COMPARISON WITH AG/SAG MILLING

    II-314 RoM Ball mills a comparison with AG/SAG Milling Aubrey N. Mainza1 and Malcolm S. Powell 1 1Mineral Processing Research Unit, University of Cape Town, Rondebosch, 7700, South Africa

  • Roll Mill Advantage And Disadvantage Of Ball Mill

    Advantages and disadvanges, Ball Mill or Roller Mill Advantages and disadvanges, Ball Mill or Roller Mill? Some customers asked us what is the advantage and disadvantage of

  • Used Ball-mills For Sale

    Buy used Ball-mills from A.M. King Industries. We can help guide you to the best solution for your equipment needs.

  • RoM BALL MILLS A COMPARISON WITH AG/SAG MILLING

    II-314 RoM Ball mills a comparison with AG/SAG Milling Aubrey N. Mainza1 and Malcolm S. Powell 1 1Mineral Processing Research Unit, University of Cape Town, Rondebosch, 7700, South Africa

  • MEI Blog: Where are SAG mills going? Barry A. Wills

    Aug 25, 2014· The main drawback of SAG high power consumption. To reduce power consumption, I think: 1. The right determine of SAG feed size. This depends on the mill diameter and the ball size. Feed size necessary to take 80% of the maximum piece of ore that will crushed by the balls. For the big SAG more than 8 meters optimal feed size will be 50mm.

  • advantages of using wet milling of gold Mining

    Nov 10, 2012· SAG Mill advantages OneMine Mining and Minerals Library SAG mill operations at Kidston Gold Mines : Amenability of Kidston ore to SAG milling, have advantages in wet grinding applicatiom with large ball and SAG »More detailed

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  • Advantages of SER drives for SAG mills GoHz

    Dec 19, 2014· Advantages of the wound rotor/SER drive are: If the SER converter drive fails, the drive can be switched to fixed speed bypass starting the usual way with the LRS. The converter only needs to be sized for 15-20% of the total motor rating with associated reduction in floor space, air-conditioning etc.

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

    Influence of feed size on AG / SAG mill performance. January 2001; INFLUENCE OF FEED SIZE ON AG/SAG MILL . PERFORMANCE. S.Morrell 1 & W.Valery 1. many economic advantages

  • Ball mill Wikipedia

    The ball mill can grind various ores and other materials either wet or dry. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. Many types of grinding media are suitable for use in a ball mill, each material having its own specific properties and advantages.

  • Quartz Ore Advantages And Disadvantages Of Ball Mill

    Quartz Ore Advantages And Disadvantages Of Ball Mill We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment.

  • Overflow Versus Grate Discharge Ball Mills: An

    Overflow Versus Grate Discharge Ball Mills: An Experimental Investigation It has been widely accepted to go for grate discharge ball milling when a coarse product is preferred or to avoid production of extreme fines, but overflow discharge mills are preferred

  • Grinding Circuit an overview ScienceDirect Topics

    The circuit comprises a SAG mill, 12 m diameter by 6.1 m length (belly inside liners, the effective grinding volume), two pebble crushers, and two ball mills in parallel closed with cyclones. The SAG mill is fitted with a 20 MW gearless drive motor with bi-directional rotational capacity.

  • composite liners Rubber Liner for SAG MILL BALL MILL YouTube

    Mar 30, 2016· NAIPU provide composite liners and rubber liners for MILL, compare with traditional alloy liner, rubber liner and composite liner have many advantages .alloy plate has some problem as

  • Autogenous mill and semi-autogenous mill Polysius

    The AG/SAG mill is normally installed upstream of a tube mill operating in closed circuit with hydrocyclones. The material discharged from the AG/SAG mill is either fed directly to the tube mill or first screened. If a screen is used, the screen overflow of the AG/SAG mill is returned for further grinding either directly or via a crusher.

  • TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS

    TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS MILL DRIVES FOR GRINDING APPLICATIONS M. Ahrens, ABB, Switzerland The main advantages are that the GMD is adjustable in speed, and thus can fulfill the customer requirements with Picture of a typical GMD system for a SAG mill Figure 2 presents the power circuit of a cycloconverter fed