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Jul 07, 2016· In Chile, in Anglo American''s Los Bronces mine, Siemens Gearless Mill Drives have been implemented for the Confluencia concentrator plant. Siemens GMD''s are essential pieces of .
furnished by Siemens. However, the main feature of the drive technology at this location, apart from the sizes of the two mills, is the gearunit technology, according to Siemens. Both the SAG mill and ball mill are each driven by two gear units. Because, on a conventional drive variant, only one engagement per pinion with the girth gear
ABB''s GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This ''workhorse'' for grinding operations combines a robust, servicefriendly and fit for purpose design to provide highest throughput, reliability .
Oct 08, 2017· SAG Ball Mill Grinding Circuit 911 Metallurgy Corp. ... Siemens Gearless Mill Drives Duration: 4:11. ... Mill discharge pumps MD500 SAG mill system animation Duration: ...
The SIEMENS Frozen Charge ShakerTM is presently installed at 3 operations throughout the world. The installations are Rio Paracatu Mineração (RPM) with a 38ft, 20 MW SAG Mill in Brazil and Lumwana having a 38ft, 18 MW SAG and one 26ft, 16 MW Ball Mill in Zambia, all three mills put in operation in 2008, as well as Los Bronces, Confluencia in
SAG mill level control. SAG mill temperature monitoring. SAG mill condition monitoring. Ball mill temperature monitoring. ... Siemens offers a comprehensive product range for the mining industry and has a solution for even the most difficult measurement tasks. Level Measurement.
Siemens has modernised a gearless grinding mill drive at Newcrest''s Cadia Valley Operations, near Orange in New South Wales, Australia. This is the first time that a gearless grinding mill had been equipped with a Sinamics SL150 cycloconverter control.
Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirtyplus 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. Your benefits
In the island state of Papua New Guinea, Ok Tedi Mining Limited (OTML) runs the copper and gold mine Ok Tedi. OTML''s drive train infrastructure at the Ok Tedi mine is in excess of 30 years old. In order to ensure long term profitability, OTML is using Siemens technology to supply and install complete new variable speed drive trains for the two SemiAutogenous Grinding mills SAG 1 and SAG 2.
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These have also been fitted with gearless drive systems. Siemens was responsible for the configuration, manufacturing and the supply of the electrical equipment of the grinding mills. The SAG mill was fitted with a gearless drive with a power rating of 24 MW and the ball mills were also fitted with gearless drive systems, each providing MW.
Minera Los Pelambres Ltda. Chile FAC received for SAG mill and ball mill Minera Penasquito, S. A. de Mexico Startup of second Siemenssupplied SAG mill; receipt of maintenance contract and Level 2 service support for gearless drives Minera San Cristobal, S. A. Bolivia Extension of service contract for gearless drives for three years
of the complete SAG mill unit including foundation, mill bearing as well as the electric motor. The analysis was also exchanged, reviewed and discussed with independent specialists. Design Of Converter And Control System The basic circuit of the converter is a cycloconverter in 12 pulse configura tion. It has been selected considering low ...
If the SAG mill is not intended to be the ratelimiting step in a process plant, then it is best to adjust the SAG load (and power) to hold a constant tonnage to satisfy another constraint elsewhere. Underground mines are an example: the hoisting capacity of the mine shaft is the ratelimiting step in the process, and the SAG mill must adapt to ...
Gearless Mill Drives Machinery Risk Solutions Practice 2009 Matt Dugalic, MARSH ... Copper Zinc Electrical Flashovers of SAG Mill Stator +/ 115 Iron / Salt Typhoon (Emma) +/ . . Siemens. ... 24'' Gearless Mill Drives NOT Siemens supply SIMINE Mill Gearless Drive Clarification.
Meanwhile, Siemens'' Industry Solutions Division reported it had received an order from Compañia Minera Antamina to supply gearless drive systems for a SAG mill and ball mill at the Antamina openpit in Peru. Siemens said the award is worth approximately €20 million ( million) and is scheduled for completion in late 2010.
Integral Plant Maintenance for gearless mill drives Minera Peñasquito operates two 36 foot semiautogenous grinding (SAG) mills to grind the ore. Siemens is handling all the maintenance work for the drive systems and the associated power systems, including the primary highvoltage supply and the complete medium and lowvoltage distribution of ...
Siemens to Upgrade SAG Mill Drives at Bingham Canyon. November 2010 | Suppliers Report. Rio Tinto has commissioned Siemens Industry, Inc. to modernize three semiautogenous grinding (SAG) mills at Kennecott Utah Copper''s Bingham Canyon mine/plant complex near Salt Lake City, Utah, USA. According to Siemens, the DCpowered drives will be ...
Siemens helped a large convention center with the expansion to their power monitoring system. It enabled the facility to proactively plan for and manage their power systems during large events such as conventions, concerts, and sports events. They are also now able to accurately track and recover facility energy costs associated with these ...
1 Fundamental Principles of NC Programming 2 Positional Data 3 Programming Motion Commands 4 Path Action 5 Frames 6 Feedrate Control and Spindle Motion 7 Tool offsets 8 Special functions 9 Arithmetic Parameters and Program Jumps 10 Subprograms and Repetition of Program Sections 11 Tables 12 List of abbreviations A SINUMERIK 840D sl/ 840D/840Di/810D
SAG mill drives (as GMDs) by some operators and principal motor designers/manufacturers until the reasons for known problems in design or manufacturing were better understood and resolved. Accordingly, the latest 40 ft dia. SAG mill is rated at 29 MW and 78%, with a 42 ft dia. mill built but not yet operational. The more recent option
Our development research was carried out specifically on the brush system of a SAG grinding mill motor. These machines commonly use SIEMENS motors; however, the instrument can be easily adapted to any motor by simply changing the physical dimensions of the prototype.
grinding (SAG) mill as well as a ball mill. Both mills will be equipped with Siemens Integrated Drive Systems that will help B2Gold reduce its capital investment and save up to 50% on spare parts. By using converter technology for regulating the rated speed of the SAG mill motors so that the four large
Another first came in 1991 when Siemens supplied gearless drives for two 36foot ring motors, developing a 12,000 kW gearless drive for the Kennecott, Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. In a continued call for larger, even more powerful drives, Siemens .
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