• SAG Mill Limited: the overall grinding circuit is constrained by the SAG mill and the Ball Mill and Pebble Crusher circuits have spare capacity. During these periods the throughput can be as high as 6,000 tph to 7,500 tph for both grinding lines. • Ball Mill Limited: the overall grinding circuit is constrained by the Ball Mill capacity ...
(1) p = 10 · wi · tph · 1 p 80 - 1 t 80 where p is the ball mill circuit power draw, wi is the bond laboratory work index for the selected ugm (expressed in kwh/t), tph is the sag circuit throughput, p80 is the ball mill circuit final grind p80 and t80 is the sag mil circuit transfer size for the selected ugm and at the throughput indicated by " …
461 PAPER 28 Design and Implementation of Advanced Automatic Control Strategy Based on Dynamic Models for High Capacity SAG Mill Ivan Yutronic N.1, Metallurgical Engineer, Process Engineer Rodrigo ...
5. Convert the desired tonnage per hour (tph) to be conveyed to the equivalent in cubic feet per hour (ft3/hr). (ex. 1000 tph x 2000 / 60 = 33333 ft3/hr) 6. Convert the desired capacity in cubic feet per hour to the equivalent capacity at a belt speed of 100 fpm. (ex. Capacity (eqiuv) = 33333 x (100 / 600 fpm) = 5555 ft3/hr 7.
Crushed ore is fed separately to two SAG mill, 7 m by 2.3 m with a design capacity of 95 tph, actual thoughput of 100 tph and the maximum capacity is130 tph. The increase in capacity to the design capacity was achieved by the introduction of rubber liners to the mill and the addition 100 mm steel balls. Each SAG mill feeds two ball mills (3.6 ...
The purpose of the primary crusher is to reduce the ROM ore to a size amenable for feeding the secondary crusher or the SAG mill grinding circuit. The ratio of reduction through a primary crusher can be up to about 8:1. Feed: ROM up to 1.5 m; Product: -300mm (for transport) to -200mm (for SAG mill) Feed Rate: 160 to 13,000 tph
The nameplate design capacity has been achieved in few days in ABC circuit without grinding media in SAG mill, and has been operating in ABC mode. The through has gradually increased to an average of 800 tph and recently 7% ball charge has been introduced to increase the throughput to +900tph.
capacity of a single train with a pinion driven mill to ranges of 4 – 8 Mtpa. Similarly, rod mills are limited to around 1600 kW in size because of the maximum size of quality steel rods and the required aspect ratio of the mills. This typically has the effect of limiting the capacity of a single rod mill circuit to less than 500 tph.
To understand the normal performance before installation of the TCPL, 6 min average process data were obtained over a period of 5 days from the #4 sag mill at Wagerup and is depicted in Fig. 12A. A feed rate of 400 tph was seen occasionally with an …
SAG Mill Trommel Screens The SAG mill trommel screen provides a simple mechanism to classify large volumes of mill product. Many designers and mill operators believe that the benefits of simplicity and the ability to handle throughputs in excess of 5 000 tph of solids make trommels the preferred equipment for this application.
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Ball mill： Ball mills are the most widely used one. Rod mill： The rod mill has the highest efficiency when the feed size is <30mm and the discharge size is about 3mm with uniform particle size and light overcrushing phenomenon. SAG mill: When the weight of the SAG mill is more than 75%, the output is high and the energy consumption is low ...
8/5/01 4:49 SAG MILL #3 Conveyor Belt Scale Feed Rate TPH Effect of Mill Load on Grind. 8/5/01 5:29 0 50 100 150 200 250. ... • Circulating load will depend on mill capacity and target grind size. – worn apex can increase load unnecessarily (leads to inefficient grinding) ...
Furthermore, NB Copper Company targeted to reach 1million ton copper concentrate in 2019. In order to reach their goal, NB plan to leverage their mill capacity by add more SAG mill with capacity 750 tph in their processing plant. Previously, they have 2 SAG Mill with capacity 850 tph each.
foot diameter SAG mil l 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. SAG mill...
support and optimisation for the SAG mill on site. In 2016 Tritton treated 220 tph, with a feed grade of approximately 1.67% copper. The challenge In coversation with the Tritton team in 2017 the Minerals team learnt that the site was ready to increase the efficiency of the SAG mill even further. Tritton tasked the Minerals mill
The SAG mill trommel screen provides a simple mechanism to classify large volumes of mill product.. Many designers and mill operators believe that the benefits of simplicity and the ability to handle throughputs in excess of 5 000 tph of solids make trommels the preferred equipment for this application.
Capacity: 500-600T/H. Material: river pebble. 150TPH Opencast Coal Mine in Russia. Capacity: 120 T/H. Input Size: 25mm. Granite Sand Making Machine in Sichuan, China. Capacity: 400 T/H. Input Size: ＜850mm. 300TPH Gravel Sand Making Production Line in Tibet. Capacity: 500-600T/H.
circuit to grind 4.6 mtpa (575tph) to produce a P80 of 125um with 10-12% ball charge in SAG mill. The nameplate design capacity has been achieved in few days in ABC circuit without grinding media in SAG mill, and has been operating in ABC mode. The through has gradually increased to an average of 800 tph
SAG MILL: • The CHINALCO mining, has the SAG mill with a design capacity of 5,250 tons per hour based on 93% availability. ... • SAG mill production does not reach the expected levels of 2620 tph. (*) • The mill output is less than planned impacting share product delivery to customers. ... Ore processing mill Mineral classieication in the ...
5 to 50 TPH SAG Mill911Metallurgist. 2021 8 20 20 to 30 TPH for gold ore SAG Ball Mill duty 25 to 40 t/h for copper porphyry SAG Ball Mill duty In Single Stage SAG duty the approximate capacity reduces to only 8 to 13 TPH for gold ore duty The autogenous mill itself is a coarse grinding device consisting of tumbling drum with a 25 to 40 volume ...
In semi-autogenous grinding (SAG), the grinding mill inventory, (i.e. volume of total charge, volume of ball charge, etc.) is important in determining the optimum operating condition for maximum production (tph), minimum specific energy (kwh/t) or lowest cost ($/t). A two-dimensional graphical method is presented for determining the actual ball charge within …
Category: Grinding Mills. Description. Description. 36′ dia X 20.5′ long (10,973 mm x 6248 mm) Ordered 2007 / delivered 2009. 15,000 kW ABB gearless drive. – 10,000 volt, 50 Hz. Processing capacity. – Nominal: 13 Mtpa ( 1625 TPH )
The existing SAG Mill Discharge screen had a single deck design of 3.6m x 8.5m and handled less than 1,900 TPH when screening at 13mm. This quickly became the process limitation. In an attempt to assist the movement of material off the deck and reduce the frequency of overloads, the customer decided to incline the screen and upgrade the drive.
Stream-2,3&4: Stream-2 Stream-3 Stream-4 Description SAG Mill Ball Mill SAG Mill Ball Mill SAG Mill Ball Mill Rated TPH 200 NA 140 NA 200 NA Dimensions dia (m) x length (m) 7 x 3.5 5 x 7.8 6.1 x 3.35 4.57 x 7.6 7 x 4.1 5.03 x 8 Installed K.W. 2500 3500 2200 2800 2800 3500 Speed 9.7-13 14.4 10.5-14 15.09 7.5-12.2 14.5 % Loading in Mills ...
Single Stage SAG Mill. Using SAG instead of AG increases the capacity as well as application range, but will also increase wear costs and still be dependent on "natural" product size being close to the desired. Common circuit in the US and Canada . Single stage SAG mill circuit [image: (135-6-25)]
AG Mill&Autogenous Mill&SAG Mill: 1.CITICIC can produce below 12m AG Mill&SAG Mill 2.AG Mills&SAG Mills:2.4x1.2~13x4.0m ZTIC can produce below 12m autogenous mills(AG Mill) and semiautogenous mills(SAG Mill).autogenous / semiautogenous mills(AG Mill &SAG Mill) are utilized to grind run-of-mine rock or primary crusher discharge.especially medium hard and …
plant provided the design capacity in spite of the difficulties connected with the ore supply ... Crushed ore grinding in a SAG mill in a closed cycle with a screen. 4. SAG mill product grinding in a ball mill in a closed cycle with hydrocyclones. ... hourly throughput of the mills on dry ore – 91.15 tph ore specific gravity – 2.77 g/cm3
Inserting the budgeted figure of 415 tph gives 553 tph or a 33 percent increase, the difference between these and the results from Stages 1 and 2 being largely attributable to the increased open area with the cast pebble ported grates. ... Ball Mill Capacity. ... This would permit the SAG mill to operate, by-pass the pebble crushing circuit ...
Improving energy efficiency in sag mills grinding mill plantag mill and a closed circuit ball mill a mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting ball mill kilowatthours per metric or short ton p80 is the mill circuit product rod mills are less common than ball mills. Capacity Of Sag Mills In ...