In fact, in July 2006 we established an alltime throughput record for the SAG mill at 522 dry tons per hour, which was only limited by the tailings pumping capacity. ... Jun06 Jun06 Jul06 Aug06 Sep06 Time SAGkW %PowertoSAGorkWh/ton SAG Mill kW SAG Mill kWh/ton Plant Operating Wi, ...
WhatsApp: +86 18838072829Considering the continuous increase in production costs and resource optimization, more than a strategic objective has become imperative in the copper mining industry. In the search to improve the efficiency in the use of resources, the present work develops models of a semiautogenous grinding (SAG) mill using statistical analysis and machine learning (ML) techniques (regression, decision ...
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WhatsApp: +86 18838072829a 50,000metric tonperday ore feed capacity ..... 12 2. Total water requirements, water losses, and makeup water for a conventional copper flotation ... water usage. The crushed ore is transferred to a semiautogenous (SAG) mill or ball mill where the ore is further reduced in size. Water is added to the ball mill, in which a slurry that ...
WhatsApp: +86 18838072829After a brief survey of SAG mill operation, CDI can tell whether we can guarantee to: Improve ore throughput (>10%), Liner shell life increase (>20%), Reduce kWhours/ton for the liner life cycle to designate P80 vs. existing system. Eliminate liner breakage. This survey is at no cost to you.
WhatsApp: +86 18838072829The type of grinding media used in each mill has a significant impact on the performance of the mill. SAG Mill Grinding Media. SAG mills use a combination of steel balls and rock particles as grinding media. The addition of rock particles to the SAG mill feed allows the mill to break larger rocks, thus increasing the grinding efficiency.
WhatsApp: +86 18838072829To predict the power of the SAG mill, ... The mill with a designed comminution capacity of 1200 tons per hour, a maximum ball load of 15 tons and 11 revolutions per minute is driven by two 4700 kW synchronous motors. Besides, the effective length is m. ... (ton), water ratio (inlet feeding per summation of water flow rate and inlet feeding ...
WhatsApp: +86 18838072829one SAG mill ( dia.(m)* length(m)) following two parallel ball mills (5dia.(m)*7lenght(m)). The aim of this research work was to investigate on the ball filling estimation of Miduk semiautogenous (SAG) Mill via an utilized method. Miduk SAG Mill circuit is shown in Figure 1. Figure 1: Diagram of Miduk Copper Complex
WhatsApp: +86 18838072829AG mills (or SAG mills with low ball charges) are often used in singlestage grinding applications. Based on their higher throughput and coarser grind relative to AG mills, it is more common for SAG mills to he used as the primary stage of grinding, followed by a second stage of milling. AG/SAG circuits producing a fine grind (particularly ...
WhatsApp: +86 18838072829Consumer advice/help Verbraucherzentrale Brandenburg, Beratungsstelle Falkensee: opening hours. Opening hours. We are not aware of any opening hours. Weekday Day Date Open? Times Notes; Monday Mo: 17. April 2023 times unknown: Tuesday Tu: 18. April 2023 times unknown: Wednesday We: 19. April 2023 times unknown ...
WhatsApp: +86 18838072829circuits, on both greenfield and retrofit projects, to increase feed rate to the SAG mill. In other words, crushing plants, from primary to quaternary circuits, are here to stay. ... System availability % 72 Runtime hours/total time available NOMINAL OPERATING RATE 4,808 90,000/hours in 3 shifts (Average tonnes per hour) Conveyor design rate ...
WhatsApp: +86 18838072829Depending on the mill size the SAG mills draws between 2 MW and 17 MW. The product from the SAG mill is further reduced in size using pebble crushers and ball mills. Hence, typical gold or copper ore requires between and kWh per ton of energy to reduce the particle size.
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WhatsApp: +86 188380728295 to 50 TPH SAG Mill. Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24′ ( m) in diameter on 3,300 HP, the 911MPE Semi Fully Autogenous Mills tumble crushed ore without iron or steel grinding media. They are used when the crushed ore pieces are hard enough to perform all the grinding.
WhatsApp: +86 18838072829Fig. 2 shows the variation of the average torque and power with mill speed for the ball mill described above with a fill level of 50%. The torque increases slowly until the peak is attained around N=80%.As the amount of cataracting increases, the balance of the charge improves and the torque required to maintain the asymmetric charge position declines steadily.
WhatsApp: +86 18838072829If the exlosion is due to differential cooling, I just don't see how they could explode after they have been out the SAG mill for more than a few hours. RE: SAG Mill sreid (Electrical) (OP) 1 Jun 05 19:40. The exploding ball story seemed so bizzare that I asked about it in thread Metalurgical change of phase was suggested.
WhatsApp: +86 18838072829In the case of the large SAG mill referred to in Fig. 1, the mill's initial volume is 757m 3 when new liners are installed, with the volume on average increasing to 792 m 3 at the end of shell ...
WhatsApp: +86 18838072829The minus 152 mm (6 in) product is conveyed onto a 29,940 Mt (33,000 st) crushed ore stockpile, reclaimed by three vibrating feeders, and then conveyed to the SAG feed chute at a targeted rate of 136 Mt/hr (150 st/hr). The control strategy for the SAG mill is fairly basic. Parameters which can be adjusted are feed tons per hour and mill speed.
WhatsApp: +86 18838072829An absolute minimum SAG feed rate of 250 tons per hour, with an optimum feed rate of 320 TPH and a maximum feed rate of 340 TPH (dictated by feed belt capacity). ... SAG mill power limits of 950 KW, on the low end, and 1175 KW, at the high end. Relative sound levels between 15 and 30 dB in order to minimize impact damage inside the SAG mill and ...
WhatsApp: +86 18838072829At the time, the circulating load was approximately 20% to 25% of fresh ore fed into the SAG mill, at a rate of approximately 1,100 1,200 tons/hour. The mill was operating with discharge grates with % open area and pebble ports. This grate setup was used from March through December 2004.
WhatsApp: +86 18838072829The product from the SAG mill is further reduced in size using pebble crushers and ball mills. Hence, typical gold or copper ore requires between and kWh per ton of energy to reduce the particle size. ... Now the power consumption is kWh/ton lower than before. The actual SAG mill power draw is 230370 kW lower. Mill runs 1 rpm ...
WhatsApp: +86 18838072829As the time support increases to two and eight hours, the accuracy drops to around 52% using a lambda value of and 78% with a lambda value of, on both SAG mills. The inaccuracy of LSTM, when predicting extreme cases such as soft hardness when it is hard and viceversa, is pretty low.
WhatsApp: +86 18838072829W is the work index measured in a laboratory ball mill (kilowatthours per metric or short ton) P 80 is the mill circuit product size in micrometers; F 80 is the mill circuit feed size in micrometers. ... A SAG mill with a 44' () diameter and a power of 35 MW (47,000 HP) has been designed.
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