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the liners prolongs the mill maintenance intervals. Additionally, the following benefits result out of the flexibility with speed variation: Mill speed can be adapted to upstream and downstream processes – avoids overgrinding, and optimizes load distribution between SAG and ball mill .
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: ...
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 ...
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 .
Siemens Process Instrumentation Solutions for Mining From accurate control of chemical dosage to crushing, milling, flotation Solutions for Mining Automation Technology US Siemens .
Siemens also supplied the gearless drives for a 36ft SAG mill with a rated power of 15 MW and a 26ft ball mill with MW of rated power recently installed .
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 ...
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
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.
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 .
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 to establish a new culture in designing bigger and more powerful Gearless Mill Motors for the expected demand for 42ft and 44ft mills. The evolutionary design methodology is to reuse proven design elements. A detailed risk assessment and root cause analysis is the basis of the Siemens .
Dec 21, 2016· 2 parallel SAG Mills each feeding 2 parallel Ball Mills (4 total). Around 50,000 TPD total grinding circuit capacity.
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.
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.
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
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.
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 ...
Siemens is now able to provide to mining companies a gearless drive system for SAG mills with a tube diameter of 42 feet. This enables throughput to be almost doubled in comparison with the 38foot mills commonly used today. With this innovation, Siemens is responding to the rising demand for larger and more powerful drives in mining.
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 ...
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 ...
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
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.
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.
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