C O N S U L T I N G L T D TECHNICAL ... - …

EF5BM=[ P80+10.3 1.145×P80] ( 3 ) The EF4 formula requires both the rod mill and ball mill work index (rod mill Wi is used to calculate the optimal feed size) and because this is a "single-stage ball mill" calculation, the F80 is actually the rod mill feed size (10,000 µm) from Table 1 and the P80 is the ball mill circuit product. The EF5 factor only applies below 75 µm to ball

Major Mines & Projects | Candelaria Complex

The open pit and work-in-progress stockpile Proven and Probable Mineral Reserves are estimated at 499.9 million tonnes at an average grade of 0.45 percent copper, 0.11 gram of gold per tonne, and 1.47 grams per tonne silver. The Candelaria open pit was designed to be mined in several phases of development.

Major Mines & Projects | Cobre Panama Mine

The three 28 megawatt SAG mills and four 16.5 megawatt ball mills installed at Cobre Panama are the largest installed anywhere in the world, except for Sentinel. Cobre Panama's eighth mill came on line in mid-December 2019, providing additional capacity on the third milling train.

PACIFIC BOOKER MINERALS INC

• a single SAG mill of 10.36 m diameter and 5.79 m length, which uses a maximum of 10,400 kW • two ball mills of 6.10 m diameter and 10.21 m length, which uses a maximum of 6,700 kW each • a 315 kW cone crusher. The front end of the circuit is comprised of run-of-mine material feeding directly into a gyratory crusher.

SAG mill Optimisation and increasing throughput at the …

SAG mill Optimisation and increasing throughput at the Phu Kham Copper-Gold Operation – a success story Watch Optimising the operation of paste thickening at the Yara Siilinjärvi Plant Watch Modular SAG mill discharge trommel for maintenance flexibility and performance Watch

minerals fuller traylor sag sag mills

ranges of the sag mills for copper minerals - amarcord.co.za. Variable Speed SAG Mills Motor Capability vs Mill Capability The specification of the prime mover of an autogenous/semi-autogenous mill involves an analysis of the likely operating conditions within the mill and the choice of a nominal operating speed.

SAG Mill Testing - Test Procedures to Characterize Ore ...

involves replacing the mill charge several times throughout the test. The Bond tests are typically run for a minimum of seven cycles, while the MacPherson and pilot plant tests are operated for about 6-10 hours. The achievement of steady-state is desirable in a grinding test, because harder components may build up over time. For AG/SAG mills,

SAG Mill Grinding Circuit Design - 911metallurgist.com

EF5BM=[ P80+10.3 1.145×P80] ( 3 ) The EF4 formula requires both the rod mill and ball mill work index (rod mill Wi is used to calculate the optimal feed size) and because this is a "single-stage ball mill" calculation, the F80 is actually the rod mill feed size (10,000 µm) from Table 1 and the P80 is the ball mill circuit product. The EF5 factor only applies below 75 µm to ball

effective mineral sag ball mill sag ball mill for gold copper

gold ball mill machine approval. sgs approval gold grinding ball mill machine. Ball Mill for Sale Grinding Machine JXSC Mining. Nov 26 2019· Ball mill is the key equipment for grinding materials. those grinding mills are widely used in the mining process and it has a wide range of usage in grinding mineral or material into fine powder such as gold iron zinc ore copper etc ...

Selecting a Regrind Mill - Grinding & Classification ...

Please see our research about regrinding mill in Sungun copper concentration plant. Its topic is "A new approach for evaluating the performance of industrial regrinding mills based on grindability and floatability" and published in minerals engineering journal.

COMMINUTION Comminution conundrum

signed a LOI, awarding Minerals a contract for the timely supply of one 11.6 m diameter x 7 m long SAG mill and two 7.9 m diameter x 11.6 m long ball mills including the immediate release for manufacture of the critical lead time components. Once installed, these machines will be the largest operating mill units in North America, capable of

CASE STUDIES ON THE EFFECT OF SAMPLE …

required in the primary (SAG) mill in the first project, and more energy in the secondary (ball) mill for the second. Comparison of Test Results For Similar Sample Dimensions Grinding tests that occur at similar sizes should report similar findings, and should lead to …

A Method to Determine the Ball Filling, in Miduk Copper ...

one SAG mill (9.75 dia.(m)*3.88 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 semi-autogenous (SAG) Mill via an utilized method. Miduk SAG Mill circuit is shown in Figure 1. Figure 1: Diagram of Miduk Copper Complex

Successful Design of the NICO Grinding Circuit for ...

29 kWh/t of SAG pinion energy to achieve 1.7mm T80) represented the correct design hardness for the NICO project mills. And whether the total pinion energy (SAG plus ball mill) was sorted by increasing SAG, or by increasing total pinion energy, the result was the same.

Chapter 6 Copper Production Technology - Princeton …

Copper ore, other minerals, waste rock0.2-6.0 (gangue) Copper minerals,b iron and other metallic0.5-6.0 pyrites, byproducts, andgangue Solution of copper and leaching agent20-50 (water orHAO.) Copper, iron (0.2-2.00/0), trace amounts of85-90 silica and aluminum oxides, and oxygen Organic solvent and pregnantIeachate; 25-35

Trends in der Minenindustrie - Mineral Processing

Only at the start of the year, for example, FL landed a big order for a new copper ore beneficiation installation in Russia with two SAG mills and two downstream ball mills respectively (Fig. 7). These are SAG mills with …

TECHNICAL NOTES 8 GRINDING R. P. King - …

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the ...

KAZ Minerals | Bozshakol

Bozshakol is a large scale, open pit copper mine located in the Pavlodar region of Kazakhstan. Production of copper concentrate commenced in February 2016. The mine ramped up and reached full capacity in H2 2017. Bozshakol is a first quartile asset on the global cost curve with an annual ore processing capacity of 30 million tonnes and a ...

(PDF) Power-based comminution calculations using Ausgrind

Minerals Engineering 21(3), 5–9] an approach was described which enabled the specific energy of tumbling mills such as Autogenous (AG), Semi-autogenous (SAG) and ball mills to be estimated from ...

Mining & Non-Ferrous - CITIC-Heavy Industries …

These mills are scheduled of start up on 2012. Our market share in China exceeds 80% with the largest mills supplied to date being a Ø7.9m x 13.6m 2x8.5MW Ball Mill and a Ø11m x 5.4m 2x8.5MW SAG Mill, being the largest …

Gearless mill drives - ABB

• 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution The ABB gearless mill drive (GMD) is the most powerful ...

Role of Simulation Software in Design and Operation of ...

copper in concentrate product. It includes two 28' x 14' SAG mills and four 18' x 24' ball mills in closed circuit, and a flotation circuit with 90 rougher cells, 30 scavenger cells and 10 column cells for cleaning. Final concentrate consists of 40 wt% copper, thickened to about 60 wt%

Estimated Water Requirements for the Conventional ...

the amount of water required to process copper sulfide ore through a conventional crush-grind-flotation-concentrate circuit ranges from roughly 1.5 metric tons (t) to about 3.5 t of water to process 1 t of ore [Wels and Robertson, 2003, 2004; Misra and others, 2005; Wills and Napier-Munn, 2006; Chilean