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sag and ball mill controls

Engineering Consulting

Engineering Consulting

Engineering consulting makes clients have a comprehensive understanding of the value of mine, the useful…
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Installation And Commission

Installation And Commission

installation and commission is key link of realizing dressing test, mine design, and equipment manufacture,…
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Mine Design

Mine Design

The key of mine design is all must be established on the basis of detailed investigation, and therefore…
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Mineral Dressing Test

Mineral Dressing Test

The clients should provide about 50g representative samples, some special samples about 200~1000g. The…
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Equipment Manufacture

Equipment Manufacture

Equipment manufacture is in the charge of Xinhai mine production plants that covers an area of 100 mu,…
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Designed Capacity Reached

Designed Capacity Reached

The target reached of Xinhai EPC includes expected recovery rate reached, design capacity for clients…
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Personnel Training

Personnel Training

It is simultaneous for worker training and installation and commission in order to save time and cost.…
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Expert mill control at AngloGold Ashanti

SAG (semiautogenous) milling circuit is described with the emphasis on the process control systems employed. The history of the circuit (process) controller is then discussed briefly to illustrate the differences between historical and new techniques. The evolutions of the control philosophy, as well as the financial benefits, are described. Global

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SAG Mill Control: It Shouldnt be that Hard E MJ

While there is no generic control strategy for SAG milling there is a considerable amount of reusable engineering. In contrast to an expert or black box system, the control loop approach was built using standard blocks, connected as shown. This control strategy has been in operation since January 2007 and controls the mill with minimal operator involvement over 95% of the time.

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What is the difference between a SAG mill and ball mill?

SAG is an acronym for semiautogenous 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%. [6] [7] The largest SAG mill is 42 (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor. [8] A SAG mill with a 44 (13.4m) diameter and a power of 35 MW (47,000 HP) has been

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What's the Difference Between SAG Mill and Ball Mill

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 mills

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SAG Mill Optimization using Model Predictive Control

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).

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OPTIMAL SAG MILL CONTROL USING VIBRATION DIGITAL

have given rise to a new system that can monitor vibrations in realtime on the rotating surface of SAG, AG, and Ball mills. Specifically designed for the SAG mill, a new device is presented that digitizes and processes vibration from three key points on the SAG mill.

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An Expert System for Control of a Sag/Ball Mill Circuit

As a counter to this a computer system to provide effective expert help to operators of semiautogenous (SAG) grinding mills has been developed. This support system is called HelpSAG. It was initially developed for a SAG/ball mill grinding circuit on

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Autogenous and SemiAutogenous Mills FL

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. FullerTraylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

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Control SAG Mill sound detection Grinding

Where I work now, Minera San Cristobal in Bolivia, we use sound control on both the SAG and Ball Mills. The result of this control is a 25% increase in throughput, over the plant design, with a 10% reduction in energy consumption the mill is more efficient. The mill control manipulates the feed rate and mill speed depending on ore and liner conditions. Liner wear has improved and ball consumption has decreased. Great job Pueblo Viejo keep focused on this control

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Difference Between Sag Mill vs Ball Mill mech4study

Ball mill is a fine grinder. A horizontal or vertical rotating cylinder which is filled partially with the balls of ceramics, small rocks and balls made from stainless steel. The ball charge of a SAG mill is about 29% to 30%. By friction and influence of tumbling balls inside rotating cylinder grinds the raw material to the required fineness.