The SAG mill specific energy consumption (E SAG) is calculated using the 1979 Barratt equation and the ball mill specific energy consumption (E bm) This model includes a phantom cyclone effect in the equations due to the ball mill being calculated by difference and not being calculated by the normal Bond equation. The resultant operating work ...

SAG mill in closed circuit with hydro cyclones at Freda Rebecca Gold Mine would affect through put and specific energy consumption using an Excel based milling process simulator developed by Hinde, a comminution specialist who has worked for Mintek for many years.

the HPGR - ball mill circuit achieved a 21% reduction in energ y consumption over the existing SAG - ball mill circuit at the same P 80 grind size of 160 µm. At a grind of 80% passing 75 µm, the HPGR - stirred mill circuit showed a 34% reduction in energy compared to the …

A 35% decrease in the SAG mill power draw from 3,908 HP to 2,526 HP (2,915 kW to 1,884 kW) was recorded. This equates to a 47% decrease in SAG unit energy consumption from 8.98 kWh/ton to 4.74 kWh/ton. A 11% decrease in SAG mill speed was …

SAG mill 1. Prediction of energy consumption at different supports, from 0.5 (top) to 8 h (bottom). Daily graphs (left) of real (black circles) and predicted consumptions (red dots) along with their scatter plots (right) and correlation coefficients. Full size image. Fig. 9. SAG mill 2. Prediction of energy consumption at different supports ...

Finding the right sound in your SAG mill. By analysing the sound and other process parameters, SAGwise™ adjusts mill load and decreases steel-on-steel impact, resulting in less energy consumption and increased production. Operating a SAG mill is a costly affair. …

With the development of the world's largest SAG mill, Ø40'x29', Outotec responds to the need by offering increased efficiency, effective grinding conditions and improved mill capacity up to 15% with reduced energy consumption. Outotec has recently been awarded a contract to deliver one of the largest grinding mills in the world.

SAG mill. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a …

How about SAG mill media consumption? What are people using to get numbers for a green field operation? Victor Bergman. 6 years ago. Victor Bergman 6 years ago. Like. There is an equation developed by Newmont for SAG mill. I suggest that you See the "Measuring, predicting and managing grinding media wear" paper in SAG 2011 conference ...

The Bond-based method applied by Barratt involves deducting a SAG mill specific energy consumption, ESAG, from the overall circuit specific energy consumption, Etotal, with the difference being the ball mill specific energy consumption, Ebm. One of the advantages of this approach is it accounts for the tendency for SAG mills to make

OPTIMISED FL designed and supplied the AG/SAG and ball mill operating in a nickel and PGM comminution circuit. ... material density and power consumption in a continuous manner. He says the ...

Reducing mill power consumption by up to 7%; Increasing mill work index through more efficient grinding. With More Than 100 Installations Worldwide, Eriez ® Trunnion Magnets are a Proven and Better Approach to Maximize Productivity and Reduce Power Consumption in …

In mining operations, the primary energy consumer is the comminution system, responsible for more than half of the entire mine consumption [].From all pieces of equipment that integrate the comminution circuit, the semi-autogenous grinding mill (SAG) is perhaps the most important in the system.

mill under steady state then cutting off all feed streams to the mill as it is being stopped. Sufficient time is required to obtain all the important measurements correctly during the crash stop. The mill filling should be measured at a minimum of 3 points along the mill. Excess of slurry could also be estimated. To get rid of pulp and rocks in ...

The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill's ...

Show details of benchmarking. Benchmarking: Bond/Barratt SAG Mill Specific Energy Consumption - Detour Lake. J. Torrealba-Vargas, J.-F. Dupont, J. McMullen, A. Allaire and R. Welyhorsky, The successful development of the detour lake grinding circuit: from testwork to production.Proceedings of the SAG 2015 Conference, September 2015, Vancouver, Canada, Paper 38.

In Chile it corresponds, on average, to almost 50% of the electrical consumption of the copper process, from which the semi-autogenous grinding mill (SAG mill) is a significant component (COCHILCO ...

In Fig. 3, Fig. 4 the data is presented in order to show the effect of the fresh feed size, particularly the % −6″ +1″ (−152 +25 mm), on the SAG mill power consumption (Pc) in kW and on the SAG mill specific energy consumption (Ecs) in kW h/t, obtained by dividing the power consumed (kW) by the fresh feed rate (t/h).

However, Bond Work Indeces are related to the type of equipment to be used (rod mill, ball mill, SAG uses Drop Ball parameter-Kwhr/m3-, so it …

Favourable operating costs (with contributions from reduced liner/media consumption relative to conventional circuits) Buy a Small SAG Mill. Though some trepidation concerning AG or SAG circuits accompanied design studies for some lime, such circuits are now well understood, and there is a substantial body of knowledge on circuit design as well ...

In these circuits the SAG mill is the largest energy consumer. In many engineering projects either a power equation and/or a specific energy equation are used for the designing of these mills but not always with acceptable results. ... In general these equations are used to predict power consumption as a function of mill size, level and density ...

• Increased SAG mill throughput by 5.9% and reduced energy consumption per tonne by 5.4% SAG Mill ACE BENEFITS • Automatically account for changes in variation of particle size or ore hardness • Minimize production disturbances • Maintain optimal production by minimizing changes to mill speed • Maximize production rate while providing

In comminution, the semi-autogenous grinding mill (SAG) represents the largest energy consumer. The-oretical and empirical energy consumption models (Jnr and Morrell, 1995; Morrell, 2004; Silva and Casali, 2015) base their inferences mainly on feed/product size …

surface of the mill flange. Typically, the synchronous motors used in SAG mills have a power higher than 10 MW. Even ball mills have a power larger than 10 MW. For this reason, they have an important impact in energy consumption and in the operation of the power distribution system. Figure 1. Picture of a typical GMD system for a SAG mill

SLW: Another example of improving wear life for increased mill performance, including reduced specific energy consumption, is given in a paper by Sever Ciutina ( MLS) and R.J.Soriano (Senior ...

In this case the mill is then referred to as a semi autogenous (SAG) mill. The process can be carried out wet or dry. Feed is grinded during its way through the mill. The mill is normally used for grinding of ores. Lining of the cylinder plays very important role. ... Specific power consumption ( kWh per ton) is good comparative guide.

The SAG mill was designed to treat 2,065 ... Longer grinding periods in the conventional milling processes prove too expensive mainly due to large power consumption. Stirrer mills have been tried in mineral industry with considerable success and have therefore been increasingly used. In this chapter, the theories involved in the design and ...

Control of -SemiAutogenous Grinding(SAG) mill weight is an example of an important process that 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, M.S., van der Westhuizen, A.P., & Mainza, A.N. 2009).

Conditions inside your mill are automatically adjusted to minimise liner damage, stabilise and then optimise the operation of a SAG Mill. With SAGwise, you're mill will grind more efficiently, helping to reduce energy consumption while lifting throughput and extending the life of your mill liners and reducing plant downtime.

Abstract The authors analyze the influence of the semi-autogenous (SAG) mill parameters on the mill grinding efficiency, energy consumption and the tangential cumulative contact energy. This paper provides a new liner parameter design and optimization method, which offers theoretical guidance for the optimization design of liner parameters.

The SAG Mill is a machine added by Ender IO.It uses Micro Infinity (µI) to grind (or mill) items into their crushed variants, like Ores into Dusts.The SAG Mill has four output slots; recipes can have 1-4 different outputs, with different chances of obtaining those outputs. Uniquely, the SAG Mill can use Grinding Balls made from various materials to increase energy efficiency (resulting in ...

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 usually contains from about 20 to 55 percent solids is produced (Singh, 2010; International Mining, 2011) (see fig. 2). The

Our SAG mill & ball mill media are designed and optimized for our customers' milling environments to improve steel consumption, wear rates, throughput and grind. Tell me more about SGI's products… 7. SAG Mill Grinding Media Designs. 5. Ball Mill Grinding Media Designs. 20mm - …

For an improved understanding, the wear rate constant is directly related to the grinding media consumption rate expressed in grams of steel per kWh drawn by the mill, using the simple expression: where dr represents the diameter of the new make-up balls periodically charged to the mill.

Factors That Affect Sag Mill Performance. Factors That Affect Sag Mill Performance. Factors affecting functioning of rod mill study on improvement of productivity at wire rod mill in a wire rod mill the performance in term of rolled output plays a vital role in the introduction to mineral processing many factors influence the amount of reagent required for a particular open and closed circuit ...

"The SAG mill is a key element of many milling circuits today, usually located between primary crushing and ball milling phases." LoadIQ utilises FL's mill scanner smart sensor technology to accurately measure volumetric filling and ore trajectory in real-time, according to Lineshan Naidoo, FL's regional product line manager ...