Sag mill control fundamentally means managing the load in the mill by adjusting the feed rate of ore to the mill andor manipulating the rotational speed of the mill the best way to measure load is to mount the mill on load cells siemens also supplied the gearless drives for a 36ft sag mill with a rated power of 15 mw and a 26ft ball
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Sag And Ball Mills stuletnidom Sag ball controls sag and mill controls sag mills are autogenous mills but 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 in diameter powered by a 28 mw 38000 hp motor chat online what is a sag mill in iron ore benification plant
Sag and ball mill controls Sag And Ball Mill Controls Flotation Cell Ball ball Mill Sag Mill Control It Shouldnt Be That Hard Sag mill control fundamentally means managing the load in the mill by adjusting the feed rate of ore to the mill andor manipulating the rotational speed of the mill the best way to measure load is to mount the mill on load cells siemens also supplied the gearless
Sag And Ball Mill Controls bouwerbroers co 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 510 cm diameter but gradually wear away as grinding of the ore proceeds the feed to ball mills dry basis is typically 75 vol Obtener precio
Oyu Tolgoi LLC the Company would like to invite potential experienced suppliers to submit their Expression of Interest EOI in relation to supply of SAG and BALL mill relining shutdown support An EOI is only a preliminary step to a formal tender process to understand and identify whether there are potential suppliers in the market that are interested in and capable of
Amelunxen SGI SAG and ball mill circuit model Morrell SMC Mib SAG and ball mill circuit model uses the umclosing F80 P80 and gpr values to calculate Mib It is also used in the CEET2 model distributed by SGS and is commonly used by people running the JK SimMet population balance model distributed by JK Tech
C Control Circuit Ball Mill Sag Pai Sag Mill Training Youtube Jan 08 2016 in this training module well cover the workings of a semiautogenous grinding mill or sag mill thats designed to be the first stage of a grinding circuit ore thats crushed in a primary C Control Circuit Ball Mill Sag Email email protected Get a Quote Send Inquiry
Apr 3 2018 Semi Autogenous Grinding SAG mill and a ball mill The SAG mill circuit also includes a single deck 3 3 3 Operation and Control of Grinding Circuits and Rose and Sullivan models D6 10 m L9 05 m and c75 Gearless Mill Drive Protection Improvements and Its ABB
Control are discussed The ROM SAG mill circuita brief description The typical ROM SAG mill circuit is depicted in Figure 1 The circuit is usually closed with either a screen or commonly a cyclone for product size classification The focus of control can be divided into two parts viz the
While there is no generic control strategy for SAG milling there is a considerable amount of reusable engineering In contrast to an expert or black box system the control loop approach was built using standard blocks connected as shown This control strategy has been in operation since January 2007 and controls the mill with minimal operator involvement over 95 of the time
Improving energy efficiency in sag mills grinding mill plantag mill and a closed circuit ball mill a mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting ball mill kilowatthours per metric or short ton p80 is the mill circuit product rod mills are less common than ball mills
SAG Mill Control It Shouldnt be Siemens also supplied the gearless drives for a 36 ft SAG mill with a rated power of 15 MW and a 26 ft ball mill with 15 5 MW of rated power recently installed at the Minera Los Pelambres copper operation in Chile These large powerful gearless drive mills require improved control systems ranging from
Once the basic operating conditions have been defined for the mill designer then and only then can he begin taking into account shell and head stresses and trunnion bearing sizes required to carry the load and to give the required openings for feeding and discharging the mills Mill heads are key structural components of any grinding mill They must carry the load of the shell assembly
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
Description SAG Mill process control classically maintains the SAG mill volumetric filling within a set operating range Typically a SAG mill weight measurement by either bearing pressure transducers or load cells is used as an inferred measurement of volumetric filling To maintain volumetric filling within a set operating range the SAG weight setpoint use for process control requires regular review due to
The Sag mill uses lifting plates along the interior of the drum which lift material throughout the rotations causing them to fall onto one another to promote crushing A ball mill has many steel or porcelain balls put in a drum to grind the feed between balls and between the
Of mills and ball mill ap plications and are able to cover the power range up to the mechanical limit of the gearbox or the ring gear The solution provides ad justable speed for AG and SAG mills or the opportu nity to tune the speed of the ball mills for optimal
The 4 27 m x 12 94 m EGL secondary ball mill is fitted with a 4125 kW motor and operates in overflow configuration Ball mill discharge slurry gravitates to the feed of the SAG mill discharge screen situated above the mill discharge hopper In 2002 the grinding circuit became SAG mill limited by the competency of the mill feed In
There are two lines consisting of this SAG ball mill combination where the SAGs are denoted as SAG1 and SAG2 Note Each SAG mill is operated in a closed circuit manner in conjunction with a typical trommel screen and pebble crushing circuit The ball mills are also operated in a closed circuit employing two hydrocyclone separators The
Recent application of the multivariable control techniques for grinding has shown significant improvement in process stability with a strong return on investment for throughput limited ball mills and Semi autogenous grinding SAG mills
SAG Mill 24 diameter 2240 kW Variable Speed Double Deck Vibrating Screen 8 x 16 Sandvik Cone Crusher Hydrocone H4800 250 kW ASRi Gap Control 6 x 15 Krebs GMAX Cyclones Ball Mill 14 dia x 21 2240 kW Flotation Underground Storage Bins A B WipFrag Feed Size Measurement Impactmeter
Combine ABBs variable speed drive system with advanced process control ABB Ability Expert Optimizer for grinding to provide maximum mill control It can be applied to new or existing AG SAG and ball mills powered by either ring geared mill drives RMD or gearless mill drives GMD This solution was designed to control stabilize and optimize mill operation
This paper describes advances in the operation and control of new SAG mill installations in Australia pebble crusher a 10 97m 36 SAG mill and a 7 3m 24 ball mill in closed
Oct 19 2020 The SAG Mill has four output slots recipes can have 1 4 different outputs with different chances of obtaining those outputs Uniquely the SAG Mill can use Grinding Balls made from various materials to increase energy efficiency resulting in higher processing speed increase bonus output chances and add a chance to double all output This makes the SAG Mill a popular option for ore
Choosing A Sag Mill To Achieve Design Performance SAG mill is an investment that can produce handsome returns if extra production is needed or simply to give the mine the option to mill the hardest ores at design throughput rates Typical tests required to define a hardness variability function are given below in Figure 1