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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.

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This equation is often used to determine the amount of water in a process stream1 knowing the solids concentration by weight and the tons/hr of solids in a process stream. Solids Concentration Example. The underflow stream from the classifying cyclone bank contains 100 tons/hour of ore which represents 45 of the total slurry mass.

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kilowatt-hour (kWh) per unit basis primarily the metric ton (ton) or troy ounce. Data contained in tables pertaining to specific currently operating facilities are static as the amount of electricity consumed to process or produce a unit of material changes over time for a great number of reasons.

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Apr 01 2001 · The first mill was fed with waste rock in February 2000 and run-in with a reduced ball charge. Two days later it was operating with a full charge at desired capacity. Within an hour of turning over the second mill it was also running at the designed capacity of 278 tons per hour

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Chat Now### 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.

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Keywords Ball mills grinding circuit process control. I. Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical mechanical and chemical characteristics. Typical examples are the various ores minerals limestone etc.

Published in Cybernetics and Information Technologies · 2012Authors Vladimir Monov · Blagoy Sokolov · Stefan StoenchevAffiliation Bulgarian Academy of SciencesAbout Computer science · Process control · Ball mill · Information technology Chat Now### 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 Hibbtac trommels handle about 400 tons per hour. The size is also dictated by the open area of

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Jul 11 2017 · The mill power is held at 980-990 HP by modifying the feed rate. Four inch forged steel balls are added any time the ore feed fails to reach 100 tons per hour for four hours. During periods of extremely hard ore the ball charge has been as high as 14 v/o and at other times the mill has operated fully autogenous for weeks.

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8-3 Centrifugal force outward Fc mp 2 Dm 2 (8.1) is the angular velocity mp is the mass of any particle (media or charge) in the mill and Dm is the diameter of the mill inside the liners. Gravitational force Fg mpg (8.2) The particle will remain against the wall if these two forces are in balance ie.

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Approximate STPH (short tons per hour) Name Manufacturer Rate Cap. lbs/hr Motor HP 3036 Raymond High Side Roller Mill Raymond 300-3000 30/30 The capacity in lbs./hr. of the mill Is calculated on the assumption that the coal hardness is 55 on the hardgrove. Grindability index and has a

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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 Hibbtac trommels handle about 400 tons per hour. The size is also dictated by the open area of

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Design and Implementation of Advanced Automatic Control Strategy Based on Dynamic Models for High Capacity SAG Mill Ivan The pebbles production can not be over 800 metric tons per hour due

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Apr 01 2001 · The first mill was fed with waste rock in February 2000 and run-in with a reduced ball charge. Two days later it was operating with a full charge at desired capacity. Within an hour of turning over the second mill it was also running at the designed capacity of 278 tons per hour

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installed circuit as well as the possible future mill expansion to 15 000 tons per day. SAG MILL CRASH STOPS After the project was approved baseline data collection was required in the form of SAG mill "crash stops". In a crash stop the SAG mill is operated under steady-state conditions and then stopped as if the power plug was pulled.

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Design and Implementation of Advanced Automatic Control Strategy Based on Dynamic Models for High Capacity SAG Mill Ivan The pebbles production can not be over 800 metric tons per hour due

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Jun 22 2004 · 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. Commercial scale SAG mills are large and process many tons of ore per hour. It is to be understood that the requirements for a SAG mill will differ depending on the

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circuit comprises a primary jaw crusher SAG mill with a cone crusher on mill scats and a ball mill with a single pack of cyclones in closed circuit with the ball mill. During the first decade of operation the mill was capable of processing in excess of 410 tonnes per hour (450 tons per hour) and was largely ball mill

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