AG/SAG mills. Historically, the most widely used method to establish the AG/SAG grinding requirements for processing an ore from a deposit was to obtain bulk samples, each weighing 10 to 100 tons, and grind them in a test grinding mill having a minimum diameter of about 5.5 feet. These programs can be very expensive, especially if the ore

Mill Pulp Trommel Free Flow by Free SAG Plant Diameter, feet Diameter, feet Long, feet Flow, m 3/h Area, m 2 Area, m 2 Area, m 3/m 2/h C.M.D.I. Collahuasi 32 14,4 13,6 935 57,0 15,4 61 Minera Los Pelambres 36 15,9 16,4 2.063 75,9 19,7 105

Processing Plant Using Dry Sag Mill Caf Frituur. Processing plant using dry sag mill.Processing plant using dry sag mill youtube aug 14 2016 coal processing plant used for crushing washing coal into suitable sie for mill high pressure mill vertical mill coarse potash processing in read more potash flotation process mineral processing amp extractive metallurgy comminution services.

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ALLIS CHALMERS 13' dia x up to 35' L Ball or Sag Mill . Inventory ID: 6C-DAN01. ALLIS CHALMERS 13' dia x up to 35' L Ball or SAG Mill . Manufacturer: ALLIS CHALMERS. Inventory ID: 6C-DAN01. View Details. HP: 3000 - 4500: KW: 2237 - 3356: Diameter: 13 Feet: CANADIAN ALLIS-CHALMERS (Svedala) 13' x 21' (4.0m x 6.4m) Ball Mill with 2,000 HP (1,491 ...

The "Critical Speed" for a grinding mill is defined as the rotational speed where centrifugal forces equal gravitational forces at the mill shell's inside surface. This is the rotational speed where balls will not fall away from the mill's shell. Result #1: This mill would need to spin at RPM to be at critical speed. Result #2: This mill's ...

The design of the 40-foot diameter SAG mill installed at the Cadia Gold Mine, New South Wales Australia, followed after two years of extensive laboratory and pilot plant testwork. This showed the Cadia ores to be hard and competent necessitating the use of both a variable speed mill drive

sag mill polysius - africaentrepreneurs.co.za. Ball mill shell 15x21,5 feet 40,6 t 2015 Sichtrad 4,6 t 2015 FL SAG mill shell 36x20 feet 190 t Foto 2015 FL SAG mill shell 36x20 feet 190 t Foto 2015 FL Ball mill shell 26x40,5 feet 293 t Foto 2015 Polysius SAG mil shell /10,24x6,50m 245,7 t …

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Developments in SAG Mill Design and Operation Over the last few years, SAG mill manufacturing technology has advanced rapidly. The bounds of mill size have been pushed from two directions. Firstly, the advent of ring motors has removed the constraint applied by the power that a …

same as the length. 15. 410,000. 1 1/4 of the length. To convert Lineal Ft to Board Ft. width x thickness x length ÷ 12=Bd Ft. Example: Board Ft in 2 x 4 - 16 Ft long. 2 x 4 x 16=128 ÷ 12=10.66 Board Feet. This table is a graphic, please allow time to load.

The company selected ABB's 26 MW gearless mill drive system (GMD) for the mine's 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA). This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form.

The material of SAG mill liners are low C or high C Cr-Mo Alloy steel,which depends on the specific working condition of the SAG mill. The hardness of AS2074 L2B is HB310-HB380. We can make big size SAG mill liner castings with Sodium Silicate Sand Process & Resin Sand Process.

Design of the 40 foot diameter SAG mill installed at the Cadia gold copper mine. September 2001. Conference: SAG2001 - International Conference on Autogenous …

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

has been selected to design and supply a 42 ft x 25 ft, (12.8m x 7.6m) 28 MW gearless SAG mill, plus two 26 ft x 42 ft, (7.9m x 12.8m) 15.6 MW ball mills and two VTM-1500-WB VERTIMILLS ® for Newmont Mining Corporation's Yanacocha Conga copper-gold project in Peru. The 42 ft diameter SAG mill is the world's largest and is the first of its kind.

Mill criteria SAG mill: 40 foot nom dia by 26 foot flange-to-flange cylinder length; ball mill: 27 foot nom dia by 45 foot flange-to-flange cylinder length (2 units) SAG mill gearless motor 31,500 HP (given in Thiele & Parraguez, Relpas 2011 conference) Ball mill gearless motors 25,000 HP

CONGA: THE WORLD'S FIRST 42 FOOT DIAMETER 28 MW GEARLESS SAG MILL. The 28 MW GMD for the 40 ft SAG mill of the Toromocho Project has been delivered and will be installed at an even higher altitude of 4,600 masl (over 15,000 ft) …. » More detailed.

38-foot SAG mill with gearless drive system from Siemens. Throughput can be almost doubled with a 42-foot mill. The 42-foot ring motor is the centerpiece of the gearless drive and wrapped around the tube mill. An increase in tube diameter means that the mass of the ore being ground rises dramatically, and hence also the strain on structural ...

22 feet (6.5 metres) in diameter. Rubber mill liners are a reliable, standard solution that can be designed to fit most applications. ... SAG mill leads to an increase in critical impacts, causing damage to critical media and mill liners, and resulting in costly repairs and

I work at a copper mine that has a SAG mill with 5" balls. When we go in the mill for liner inspections, you can feel balls exploding underneath your feet. Last year my boss got cut in the ear by one. I always thought that the balls exploded due to the internal stress generated by the outside cooling (and shrinking) faster than the inside.

The SAG Mill has a mill diameter of 24 feet and an Effective Grinding Length ("EGL) of 18.5 feet and a structural charge mass of 315 metric tonnes. The structural design ball charge is 11% with a structural design load volume of 35%. Specific gravity of the material is 2.55. The structural steel liner mass is 240 metric tonnes; however, with ...

The vibration measurements at the feet and concrete are rms. What vibration levels would you expect in mm/rms Not being a structural engineer but the foundation is quite massive. When they commissioned and started the Sag Mill up I was quite impressed with the low vibration which included the motor, gearbox and pinion bearings.

Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have accumulated a combined total of over 500 years in operation time – and this number is steadily growing even as you read this. This is a benchmark we are immensely proud of.

Feet. In 1959 the international yard and pound agreement (between the United States and countries of the Commonwealth of Nations) defined a yard as being exactly 0.9144 metres, which in turn defined the foot as being exactly 0.3048 metres (304.8 mm).

SAG Mill Design and Specification . The Kidston plant was designed to process 7500 tpd fresh ore of average hardness; but to optimise profit during the first two years of operation when softer oxide ore will be treated, the process equipment was sized to handle a throughput of up to 14 000 tpd. Some of the equipment, therefore, will become ...

Traditionally, the number of shell lifters used in a SAG mill is equal to twice the number of the feet in the mill shell diameter (e.g., a 34-ft-diameter mill shell would have 68 shell lifters). This is also called a 2-D shell lining. Eliminating some shell lifters increases the volume of charge between the lifters

Used Koppers Hardinge Ball Mill in Gold Canyon, Arizona, United States for sale, inspected and guaranteed. 22 ft. Diameter x 7 ft. Long, 2,770 Cubic Foot Working Volume, 690 Cubic Foot (25%) & 830 Cubic Foot (30%) Charge Volume, 84 in. x 18 in. SAE-67 Ball Socket Type Centrifugally Cast Bronze Bushing Main Bearing, Falk 282 Tooth 1 1/4 D.P. 25 in Face 225/265 Brinell 30 Degree Helix 12.75 …

foot diameter SAG mill was designed to treat 2065tph of monzonite ore at a ball charge of 8% volume, total charge of 25% volume and an operating mill speed of 74% of critical.

The Robinson Sag Mill & Concentrator is a silver, gold, and copper mine located in White Pine county, Nevada at an elevation of 7,054 feet. About the MRDS Data: All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy.

A 22 foot by 12 foot SAG mill shell has been ordered for Sulphur Springs copper mine in Australia, together with an 18 foot by 28 foot ball mill shell. Outotec USA has commissioned DCD-Dorbyl Heavy Engineering to produce two 4.6 by 11 m ball mill shells for the Atacama iron ore mine in Chile, as well as an 18 foot by 30 foot SAG mill shell for ...

The order comprises a 22-foot diameter by 8-foot effective grinding length (egl) SAG mill and 14.5-foot diameter by 19.5-foot effective grinding length ball mill. Both mills will be driven by 2000 ...

Modelling SAG milling power and specific energy . inside the mill and it is composed of balls ore and water The ball charge is a function of the bulk fraction of the SAG mill volume Jb occupied by balls the ore retained in the mill is the result of the volumetric filling which depends on the ore size distribution spe cially the 600 and the 600 100 on the rotational speed N/Nc