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What's the Difference Between SAG Mill and Ball Mill ...

Nov 26, 2019· 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 ...

Optimising mill circuits for best efficiency impact ...

Dec 14, 2020· "Among the new solutions acquired is LoadIQ, for monitoring and optimising the performance of semi-autogenous (SAG) mills," he says. "The SAG mill is a key element of many milling circuits today, usually located between primary crushing and ball milling phases."

FREDA REBECCA SAGMILLING CIRCUIT OPTIMIZATION

the SAG mill amounting to 51.2 t/h affecting mill capacity as this took space and limited the capacity for new feed. Using ModSim simulator, incorporation of a 100 micron screen on the cyclone underflow stream was simulated. The main purpose of the screen is to reduce the re circulating load

Performance Characteristics and Optimisation of the ...

by the installation of a 12MW SAG mill with a diameter of 10.97m (36ft). The mill, when built, was the largest SAG mill operating at any existing Australian mine. To aid in commissioning and optimising the mill, the Julius Krutt- schnitt Mineral Research Centre (JKMRC) and plant staff con- ducted extensive surveys of the grinding circuit.

Minerals | Free Full-Text | Optimizing Performance of SABC ...

The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mill's performance [17,18,19,20,21]. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill …

Optimization of a SAG Mill Energy System: Integrating Rock ...

Jul 01, 2019· An optimization is carried out to minimize the yearly cost of energy for the operation of the SAG mill. This cost includes the energy consumption cost in $/kWh and the capital cost for the PV-BESS infrastructure, prorated over the life of the battery system, accounting for the discount rate through an annuity factor (Pamparana et al. 2019a, b).The energy requirements are defined by the SAG ...

(PDF) Blast fragmentation for maximizing the SAG mill ...

Maximising SAG mill throughput at Porgera gold mine by optimising blast fragmentation. By Walter Valery, Alex Jankovic, and S. Kanchibotla. Batu Hijau Model for Throughput Forecast, Mining and Milling Optimisation and Expansion Studies Newmont Mining Corporation.

Noise Monitoring That Prevents Mill Damage | Brüel & Kjær

Protecting and Optimizing Mills The main benefits of this type of reliable SAG mill monitoring are accurate and repeatable decibel signals at the various frequencies – information that is used to protect the mills. The next phase of the project is to provide measurements that can help customers operate a SAG or AG mill optimally.

Mining Weekly - Optimising mill circuits for best ...

Oct 01, 2021· Optimising mill circuits for best efficiency impact . 1st October 2021. OPTIMISED FL designed and supplied the AG/SAG and ball mill operating in a …

Optimisation and Continuous Improvement of Antamina ...

2007, Process Technology and Innovation (PTI) was contracted to increase SAG mill throughput by integrating and optimising blast fragmentation, crushing and grinding for the harder M4/M4A (CuZn) ores. Following the implementation of recommendations provided by PTI, the SAG mill throughput

Implementation of a SAG Grinding Expert System at ...

Jan 01, 2013· Beyond the primary benefit of stabilising and continually optimising the SAG mill operation, the expert system frees up the operators to focus on maintenance issues, as well as upstream and downstream processes. Through direct involvement in the expert system project, the operators have also formed a better understanding of the operation and ...

Optimising the Drill and Blast cycle with FRAGTrack™

- SAG mill throughput improvements by optimising primary crusher settings - increased explosive energy trials with Fortis™ Extra - increasing powder factors - pattern expansion trials in waste - Electronic Blasting Systems (EBS) trials with i-kon™ Unlike dig rates or crusher throughput which may be influenced by external factors, fragmentation,

Optimizing Performance of SABC Comminution Circuit of the ...

the SAG mill and ball mill was 8658 kW, which caused partial over-grinding. From experience in processing plants outside of China, the power rating of the ball mill should be higher than that of the SAG mill [5]. The pebble crusher had an over-powered configuration. The installed power draw of 630 kW

Optimization of mill performance by using

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 ...

New training centre focuses on optimising mining ...

Jul 08, 2021· Current: New training centre focuses on optimising mining ... "The liners inside the SAG mill wear down as ore passes through the mill. Effective systems to monitor this wear ensure the mill is working at optimal efficiency, which in turn reduces the energy required for this part of …

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).

Optimising mill circuits for best efficiency impact

Sep 13, 2021· "Among the new solutions acquired is LoadIQ, for monitoring and optimising the performance of semi-autogenous (SAG) mills," he says. "The SAG mill is a key element of many milling circuits today, usually located between primary crushing and ball milling phases."

The development of optimised pulp lifter design for the ...

Aug 28, 2018· 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

MILLING CONTROL & OPTIMISATION - Mintek

By optimising the mill power usage and preventing mill overloads, significantly increases in throughput from 6 to 16% have been achieved. ... Figures 8 and 9 on the right show results from a gold plant's SAG mill achieved with MillStar's Segregated Ore Feed Controller combined with the Power Optimiser:

SAG mill wear optimization using DEM simulation - Rocky DEM

Mar 13, 2018· Video 1: Mill Showing Surface Wear Modification Case scenario. Consider a large SAG mill with a diameter of 10.97 m, as shown in Figure 1a. The mill has a high-definition line design with alternating lines of high and low elevators (Figure 1b). The mill processes rocks from 200 mm to 300 mm, using 350 mm steel balls as the grinding medium.

(PDF) SAG milling at the Fimiston plant (KCGM)

been implemented on the Fimiston SAG mill which have increased the. Fimist on plant throughput from 11.0 million tpa to 12.5 million tpa. With. an increase in the plant throughput, the overall ...

PAI SAG Mill Training - YouTube

In this training module, we'll cover the workings of a semi-autogenous grinding mill, or SAG mill, that's designed to be the first stage of a grinding circui...

STEPPING FORWARD: USING VARIABLE SPEED DRIVES FOR ...

The breakage rate function shape of the SAG mill is largely governed by the mill load particle size distribution and mill speed. The feed in the mill contains fractions of ore that serves as the grinding media. Larger ore fractions break the smaller particles but also breakdown themselves and exit the mill …

Ian Orford - Principal Process Engineer - Amec Foster ...

Jul 05, 2016· Optimizing SAG mill liner changes through procedures and liner design SAG2006 Conference Sep 2006 Principal author, "Optimizing SAG mill liner changes through procedures and liner design", SAG2006 Other authors. Froth based indicators …

Engineering News - Optimising mill circuits for best ...

Oct 01, 2021· Optimising mill circuits for best efficiency impact . 1st October 2021. OPTIMISED FL designed and supplied the AG/SAG and ball mill operating in a …

SAG Mill Feed Chutes - Makuri Group

The SAG mill is the 'cash register' of most mining operations & if it isn't turning, you're not making money. Despite the critical nature of this part of the plant, the chute that feeds it is often neglected. Makuri is one of the few suppliers worldwide that focuses on SAG mill feed chute design and is able to optimise these by ...

Optimising your SAG mill operation

Download Citation | Optimising your SAG mill operation | The optimal performance of AG/SAG mills is the key to successful plant operation. All AG/SAG mills using radial or curved pulp lifters ...

Grinding Mill Liners- An Overview

Jul 22, 2016· Optimising design is about maximizing impact grinding in AG/SAG mills, ensuring cascade action for regrind mills and avoiding impact on the mill shell, minimizing ball breakage, maximizing mill ...

An economic approach to optimising mill reline frequency ...

Aug 29, 2018· 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

Improving energy efficiency in comminution - MINING.COM

Oct 01, 2018· Increasing throughput through a SAG mill generally requires feeding it with more fines, since these flow straight through the mill. If these can be generated in the blast, then it is a much more ...

Multotec looks to optimise SAG mill liner performance ...

Mar 18, 2021· Multotec looks to optimise SAG mill liner performance, milling efficiency and liner life Posted by Daniel Gleeson on 18th March 2021 As the mining industry moves to larger semi-autogenous grinding (SAG) mills for higher productivity, Multotec says it is developing and applying innovative liner designs to optimise liner performance, mill ...

Predictive Optimization of SAG Mill Wear Using Rocky ...

In the mining sector, these losses can be particularly large. For example, a trained professional crew requires between 40 and 120 hours to replace the worn liner of a Semi-Autogenous Grinding (SAG) mill with each hour costing between 30,000 to 200,000 USD and …

Increase throughput and capacity in SAG mills

Optimising the capacity of your SAG mill is crucial to avoiding downtime and liner wear and damage. With variances in mill ore feed rate, mill speed and slurry density, critical impacts can occur in your SAG mill. The speed at which these variances are adjusted for is thus crucial for minimizing damage and optimizing liner life.

Optimizing your SAG Mill | Mining Surplus

Mar 02, 2010· Optimizing your SAG Mill. Sanjeeva Latchireddi March 2,2010. As the 'heart of the plant' could be viewed as the milling/grinding area, one of the key steps in plant optimisation is, therefore, ensuring the mill is operating properly.

The Selection and Design of Mill Liners - MillTraj

stresses in large SAG mills helped to drive the development of greatly improved liner materials. However, this cost engineering approach ignored the mill performance and overlooked the other key function of mill liners. The second primary function of a liner is to transfer rotary motion of the mill to the grinding media and charge.

Optimizing your SAG mill operation - International Mining

Mar 21, 2007· Optimizing your SAG mill operation. Posted by Matrix on 21st March 2007 Sanjeev Latchireddi, Chief Process Engineer – Grinding Americas, Outokumpu Technology, looks at the shift from ball mills to SAG mills. Nowadays, the more successful plants are those that have adopted effective and efficient strategies to optimize their plant operation.