Lrs And Ser For A Sag Mill manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai Lrs And Ser For A Sag Mill supplier create the value and bring values to all of customers.
WhatsApp)
SAG Mill LRS Control. The Problem Bottle Neck: Hard ore in circuit reducing throughput Major Issue No control of mill rotational speed due to old equipment and no capital expenditure Current System Control System Mill control power to weight ratio Register for your free account. Login to continue reading ...
Sep 17, 2013· For now I am working on a mining project which involves starting two SAG mills, the method of starting these mills is by rotor resistance and likewise we are using an energy recovery system (SER), could someone tell me how this system works SER? each mills have two motors of 8000 kW at kV. thank you for all.
Mill speed can be adapted to upstream and downstream processes – avoids overgrinding, and optimizes load distribution between SAG and ball mill (Mular, Halbe Barratt, 2002). Power consumption is influenced by load respectively torque and mill speed. This means that further energy can be saved if a mill speed below the rate speed is re
Variable speed was required for the SAG mill. Various options were considered to meet the specified speed range of 65 to 85% of mill critical speed, and the final selection was the IES HyperSynchronous drive Slip Energy Recovery (SER), in conjunction with Wound Rotor Induction motors (WRIM).
Our Modern SER is a compact, powerful, efficient, multifunctional and reliable addition to the SAG Mill control technologies on the market today.
Preprint 13050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS R. Kalra, CITICHIC Pty Ltd, Sydney, ... SER drives are now mature and ready for use on 2 X 10MW dual drive ... SAG mill conference, provided details of the then largest gear drive in operation on a SAG mill (34ft x 18ft) at ndida, which ...
Mill throughput is a key driver for maintaining profitability at Mt Keith because of the low head grade (~% Ni) and inherently low nickel recoveries due to the mineralogical makeup of the ore. The Nickel West Mt Keith Concentrator (NMK) has 2 parallel grinding modules consisting of one SAG Mill and one BALL Mill per module.
When coupled with purposebuilt SAG Mill starting Liquid Resistance Starters (LRS), the exclusive benefit of Hot Redundancy is available. In the unlikely event the SER fails, the system will transfer control to the LRS units until the SER is reset.
View D''Arcy Lockhart Ross'' profile on LinkedIn, the world''s largest professional community. D''Arcy has 12 jobs listed on their profile. See the complete profile on LinkedIn and discover D''Arcy''s connections and jobs at similar companies.
exhibits many of these aspects. Maintaining the SAG mill weight at the optimum value is critical for achieving maximum grind rate efficiency and mill production (Powell,, van der Westhuizen,, Mainza, 2009). However, SAG mill weight is difficult to control as the dynamic response changes as the mill approaches maximum capacity.
SAG Mill Control: It Shouldn''t be that Hard An economically appealing method for improving operations is available without the capital expense — get more out of a mill by applying the advanced control capabilities in the existing plant control system By Andrew Thornton
The Slip Energy Recovery Drive ( Drive) is a technology well proven in the industry for large power motoring systems that allows precise motor speed control at the same time that recover the slip energy in the wound rotor induction motors (WRIM). The typical applications include SAG mill, AG mill and ball mill.
Jun 28, 2019· x Full load torque, very typical for a ball mill or sag mill as Chris mentioned. The liquid starter simply adds resistance in the rotor during starting toAppliion of Liquid Resistance Starter ...
EPM Electrolytic starter (LRS) for slipring motors from 550 to 20,000 kW. ... EPM electrolytic starter can be used to start slipring motors from 500 kW to 20,000 kW. It will supply the power necessary to drive the motor by resistance variation. Designed for controlled starting and speed control of large slipring motors in demanding applications ...
Mill Power Draw Models. The mill power draw models are used to predict how much power will be consumed by a particular type of mill, mill geometry and set of mill operating conditions. This power is transferred to the ore and used to predict the throughput when combined with the specific energy consumption models.
Grinding plant with SAG and tube mill for Gold/copper ore grinding in is the world''s biggest SAG mill equipped with sliding shoe bearing arrangement and COMBIFLEX® drive system (a favourablypriced alternative to the ring motors normally used with SAG mills of this size).
1. Candelaria 1, 36 ft SAG mill 2. Chuquicamata, 32 ft SAG mill 3. El Teniente, 38 ft SAG mill 4. Cadia, 40 ft SAG mill
SAG Mill Process Control What do you prefer? Controlling Weight (within a range) by manipulating mill speed and keeping a constant feed rate? ... Grinding Classification Circuits. ... There are multiple ways to provide variable speed, the common ones are WRIM+LRS+SER or SCIM+VSD, the top of the range is gearless mill drives. Victor Bergman ...
The mill used for this comparison is a diameter by meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 per hour. This type twocompartment mill is a state oftheart shell supported cement finish mill. The torque and time requirements of the mill with the ball
Sep 20, 2019· The SER delivers 100 per cent of rated (nameplate) motor shaft power at above synchronous speeds, an exclusive benefit of this SER technology. The CSE Uniserve Modern SER Drive is a compact, powerful, multifunctional and reliable addition to other SAG mill control technologies on the market today. Electrical features
Starting of the mill is possible by either using two of the 1250kVA sets or one 1250kVA and the 500kVA set. No theoretical analysis had been performed on the system, due to being an existing plant. Commissioning on site involved testing the LRS for the correct resistance to ensure the mill motor would develop ample torque to accelerate the mill.
Dec 19, 2014· Advantages of SER drives for SAG mills; Advantages of SER drives for SAG mills. Friday, December 19, 2014 ... starting the usual way with the LRS. ... I expect that this type of drive would be the most common large mill variable speed mill drive in the world''s minerals processing industry for the range mentioned above for the last 15 years ...
• The WRIM + LRS system is causing high transient torques during the startup. Figure 5. The WRIM + LRS is causing high transient torques during the startup. Based on a study done by Anglo Technical Division, presented in a technical paper on the occasion of the SAG 2006 in Vancouver, B. C.
LOCKED CHARGE STARTS AND YOUR GRINDING MILL Authors: Jeff Belke Mitch Bertrand ... SAG mill continually pump the finer material out of the mill, lowering the total amount of residual fine ore and thus improving the situation in respect to locked charge starts. ... Test and correctly set VFD or LRS – this prevents the mill starting too fast ...
WhatsApp)
Online Chat
Sales Hotline