High single-line capacities (leading to capital efficiency) The ability to mill a broad range of ore types in various circuit configurations, with reduced numbers of unit operations (and a corresponding reduction …

be expected to behave in a different manner when fed to a sag mill. Despite the limitations of using the F80 it can be seen from Figure 2 that on average an increase in F80 for this particular mill (sag mill with 12-15% balls) causes a higher specific energy and a consequent lower throughput at constant mill power. Over the range of F80 covered ...

Simulation results under the ∅5250 × 500 mm mill model show that the mill operates with the optimal effect when the mill is under the condition of 80% critical speed and 15% fill level; the ...

First, an industrial SAG mill with dimensions of 9.50 m × 4.42 m that has a Smooth-type liner is simulated. Then by changing the liner types, i.e. Wave, Rib, Ship-lap, Lorain, Osborn, and Step ...

Abstract. To explore the performance of a semi-autogenous (SAG) mill under different working conditions, in this paper, the working process of the laboratory-scale SAG mill is taken as the research object. Firstly, the electrical system and multi-body dynamics model (EMBD) of the SAG mill are established, the rock discrete element method (DEM ...

parameters on the grinding of SAG mill have not been observed. In this study, the optimization of operational parameters of the SAG mill to decrease the size of final …

A research team from the University of Utah is working to make inroads into saving energy in these SAG mills. In 2003, Industries of the Future Program of the Department of Energy tasked the University of Utah team to build a partnership between the University and the mining industry for the specific purpose of reducing energy …

SAG Mill process control classically maintains the SAG mill volumetric filling within a set operating range. Typically a SAG mill weight measurement, by either bearing pressure transducers or load cells, is used as an inferred measurement of volumetric filling. To maintain volumetric filling within a set operating range the SAG weight setpoint use for …

sizes. The results of these studies showed that a single line 40 ft SAG mill circuit gave the best project economics. Further work was followed up to optimize the 40 ft SAG mill size with the results showing that a slightly more expensive 42 ft SAG mill with equivalent power to the 40 ft SAG mill enhanced the project economics.

The rotation speed of a mill is an important factor related to its operation and grinding efficiency. Analysis and regulation of the optimal speed under different working conditions can effectively reduce energy loss, improve productivity, and extend the service life of the equipment. However, the relationship between the optimal speed and different …

Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW. Our team of product engineers continually improves SAG/AG Mill designs in order to provide the most …

in the semi-autogenous grinding process by dynamically modeling the SAG mill-pebble crusher loop to improve the SAG mill throughput. Cleary [8–10] studied the e ect of rock particle shape on the dynamic filling and energy utilization in a SAG mill and analyzed the operation status of a SAG mill under di erent collision conditions through the ...

Traditionally, the number of shell lifters used in a SAG mill is equal to twice the number of the feet in the mill shell diameter (e.g., a 34-ft-diameter mill shell would have 68 shell lifters). This is also called a 2-D shell lining. Eliminating some shell lifters increases the volume of charge between the lifters

mill under di erent collision conditions through the collision energy spectrum of a SAG mill. It was found that the fill level ratio, liner height, and steel ball ratio had a greater influence ...

Stress test the controller for sudden changes in ore variability. Continuously improve, identify and test the controller – the overall objective is to stabilize SAG mill control for high ore …

The last stages of vibrating screening is 12 mm D80=de to 10 mm measured by exploitation team The ball mill size added: 2/3 is of 100mm and 75 mm 1/3 Actually the initial work index changed and we tried to calculate the operational work index according to a follow-up of the parameters below but I don't have any conclusions according to this ...

I'm looking for ideas to process the discarded material of a SAG mill. We have huge material stocks of this process that contains ore contaminated with metal balls and some …

Additional applications of machine learning to SAG modeling put the focus on the control of SAG grinding mill circuits, predicting power consumption [90,91], one of the main concerns of plant ...

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

Abstract and Figures. An increase of over 10% in mill throughput was achieved by removing the ball scats from a single -stage SAG mill. These scats are non- spherical ball fragments resulting from ...

Figure 1 shows an example of an installed -Outotec Premier™ SAG Mill that is similar to the SAG Mill ordered by Liontown. The SAG Mill is one of several critical long-lead items identified for early award and represents the largest single piece of equipment required to be purchased for the Project by size, value and lead time.

1. Introduction. Grinding is an industrial process that accounts for a large proportion of the mineral processing industry [1], SAG mill is the main mining equipment in this link.The main working device of the SAG mill is a drum that is placed horizontally and can be rotated, the lifters are provided on the inner wall of the drum that includes the …

As one of the machines widely used in mining, a semi-autogenous grinding (SAG) mill can significantly improve the roughing efficiency of rock. But the SAG mill still faces the obstacles of significant …

Each low aspect ratio (D/L) SAG mill has a diameter of 16 ft, length of 24 ft, installed power of 2 MW and operate in closed circuit with hydrocyclones (750 mm of diameter) to achieve a target ...

Fig. 8 shows the feed rate to the SAG mill for the time period in which comparison has been made. It is worth to mention that, the SAG mill maximum throughput (design value) for the time of the tests was 1035 t/h. This is due to the new set of liners installed to place the worn set. Download : Download high-res image (408KB)

In order to obtain the optimal operation parameters of a SAG mill, in this paper, the discrete element method (DEM) is used to simulate the breakage process of the particles by controlling...

The graph of SAG pinion energy (to 1.7mm) Vs Bond BM Wi is given in Figure 3. Excluding the very soft and very hard projects, shows that the database in general does support a broad correlation between SAG and ball mill hardness but that the function is -defined to be useful in sizing a SAG too ill mill from a Bond BM Wi measurement.

The author has developed a simple and sound approach to determine the preliminary SSSAG mill aspect ratio before conducting population balance model simulations. The approach developed takes into ...