why use a sag mill

why use a sag mill

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  • Difference Between Sag Mill vs Ball Mill

    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 piec 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...

  • The Selection and Design of Mill Liners

    mills in the older plants that had many mills in parallel In fact this is generally still the case in the multi-stream plants, where mill liner design and selection is only tackled on a cost consumables basis However, the gains to be had through good liner design and selection are just as great as on the large SAG mills...

  • Used Grinding

    Shop our wide selection of Un-Used and Used Grinding Equipment including Ball Mills, SAG mills, Rod Mills & Vertical Mills No matter what you are mining or processing, from rocks and metals to gold and oil shale, you'll need heavy duty, industrial strength grinding equipment to grind down materials after the crushing process...

  • Bond Work Index

    Ball mill design requires a Bond work index, BWi, for ball mills at the correct passing size; SAG mill design requires an appropriate SAG test, for example, SPI (Chapter 5) Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral ( Chapter 12 )...

  • How to Make a Ball Mill: 12 Steps (with Pictures)

    Mar 29, 2019· How to Make a Ball Mill Ball mills are a special instrument used to break up hard solids into a fine powder They are similar to rock tumblers in that the instrument is a rotating container filled with heavy balls to grind the substance....

  • BALL MILL DRIVE MOTOR CHOICES

    The mill used for this comparison is a 44-meter diameter by 136 meter long ball mill with a 5000 HP drive motor It is designed for approximately 90 ston per hour This type two-compartment mill is a state- of-the-art shell supported cement finish mill The torque and time requirements of the mill with the ball...

  • The magic of bolting for a grinding mill assembly

    Mar 17, 2020· For example, a large 40 foot diameter SAG mill without liners weighs in excess of 36 million lbs (16 million kg), making it impossible to make, ship, or lift this equipment in one piece Smaller segments can be assembled at the mine site either through field welding or through bolting At assembly, each part, whether it is big or small must ....

  • Rod mills, how they function

    Rod mills are very similar to ball mills, except they use long rods for grinding media The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 14 to 16...

  • Frequently Asked Questions

    To counteract this, set the bar on a cinder block or tree stump so that it bows upwards before you clamp the mill on to the bar When you lift the mill off the cinder block or stump, the tension should hold the bar straight If you are still having problems, you can also use a 2×4 tacked to the end of the log to support the bar as you start ....

  • DEM Simulation of a SAG MILL including material ,

    Jul 04, 2017· Simulación del movimiento de carga de un molino SAG, el cual incluye fragmentación de material, utilizando el programa LIGGGHTS mediante el método de los ele....

  • Size Reduction

    Pin mills are used to reduce the size of medium- to low-density materials such as talc and clay Pin mills use centrifugal forces to smash large particles against pins Equipment Design A colloid mill rotor is an intermeshing rotor used for the size reduction of materials by multiple impacts with the maze of pins...

  • Ball Mills

    In all ore dressing and milling Operations, including flotation, cyanidation, gravity concentration, and amalgamation, the Working Principle is to crush and grind, often with rob mill & ball mills, the ore in order to liberate the minerals In the chemical and process industries, grinding is an important step in preparing raw materials for subsequent treatment...

  • Steel Slag

    The primary applications for steel slag in the United States are its use as a granular base or as an aggregate material in construction applications Disposal While most of the furnace slag is recycled for use as an aggregate, excess steel slag from other operations (raker, ladle, clean out, or pit slag) is usually sent to landfills for disposal...

  • Autogenous and Semi

    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 43m through 122m in diameter with powers as high as 28,000 kW...

  • Molycop Tools

    Jun 18, 2019· Molycop Tools© 30 is a set of 63 easy-to-use EXCEL spreadsheets designed to help process engineers characterize and evaluate the operating efficiency of any given grinding circuit, following standardized methodologies and widely accepted evaluation criteria...