optimizing sag mill product size in sag mill

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YKN Vibrating Screen

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Noise monitoring for optimal mill operation - bksv.com

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.

YANACOCHA GOLD SINGLE STAGE SAG MILL DESIGN, …

2 OPTIMISATION OF THE SINGLE STAGE SAG MILL CIRCUIT AT THE YANACOCHA GOLD MILL ABSTRACT This paper describes the design, the first three years of operation and optimization …

Expert mill control at AngloGold Ashanti

The ROM SAG mill circuit—a brief description The typical ROM SAG mill circuit is depicted in Figure 1. The circuit is usually closed with either a screen or, more commonly, a cyclone for product size classification. The focus of control can be divided into two parts, viz. the mill and the cyclone. The importance of cyclone performance should ...

Improved Relationships for Discharge in SAG/AG Mills

There is currently no accepted pilot test procedure for measuring discharge and product size distributions in AG/SAG mills. The existing models and understanding of grate discharge and classification are known to be flawed and have been identified as one of the key limitations in AG/SAG …

AMIT 135: Lesson 6 Grinding Circuit – Mining Mill Operator ...

The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a rod mill, ball mill or pebble mill. AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill.

A Method of C alculating Autogenous/ Semi-Autogenous ...

Rod mill and AG/SAG mill products are similar and tend to be not as steep as a 0.5 slope when plotted on log-log paper. This is because the particle size distribution (PSD), these mills produce have a coarse fraction but also a fi ne fraction which is not credited for in an 80 per cent passing assessment. A slope

Parameters Effecting Grinding Rate Of Ball Mill | Crusher ...

OPTIMIZING SAG MILL PRODUCT SIZE IN SAG MILL _ BALL MILL GRINDING CIRCUITS Author: imachado Created Date: Crusher Solutions | Crushing Plant Manufacturer parameters affecting fine grinding process in jet mill. …

Optimization of mill performance by using

The performance of tumbling mills is sensitive to the volumetric mill filling which influences grinding media wear rates, throughput, power draw, and product grind size from the circuit. Each of these performance parameters peaks at different filling values. In order to contin-uously optimize mill operation, it is vital to

Comminution Services - SGS

autogenous grinding as well as to SAG mill primary grinding. In the SAG mill testwork when the steel is added the SAG product classification size and ore feed size distribution is varied. If necessary, pebble crushing or mill speed can also be investigated. All tests are evaluated on the basis of feed rate, power consumption and product size ...

Modelling SAG milling power and specific energy ...

Modelling SAG milling power and specific energy consumption including the feed percentage of intermediate size particles M. Silva, A. Casali⇑ Mining Engineering Department, Universidad de Chile, Beauchef 850, Santiago 8370448, Chile

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

dia.(m)*3.88 length(m)) following two parallel ball mills (5dia.(m)*7lenght(m)). After SAG mill, a trommel screen produces two over and under size materials which the oversize part is circulated into SAG mill and undersize reports to hydrocyclone for further process. Ball filling identify was implemented in

Grinding Circuit - an overview | ScienceDirect Topics

A typical SAG-HPGR-Ball mill circuit suggested by Patzelt et al. [6] is shown in Figure 9.6, where the pebbles from the SAG mill are crushed in the high-pressure grinding rolls. It is a general observation that SAG mills are helpful for grinding where wide variations in the grindability of ores are experienced.

Optimization of the Design of SAG Mill Internals Using ...

Optimization of the Design of SAG Mill Internals Using High Fidelity Simulation by John A. Herbst Svedala Optimization Services and Lawrence Nordell Conveyor Dynamics, Inc. September, 2001 ABSTRACT High Fidelity Simulation of SAG milling is a technique, which uses DEM, CFD and FEM to

THE APPROPRIATENESS OF THE TRANSFER SIZE IN AG AND …

In the case of SAB/SABC circuits the transfer size is the product of the SAG mill circuit and the feed of the ball mill circuit. Hence if power-based equations such as eq. 1 and eq. 2 are

Chapter - M MODELLING, SIMULATION, OPTIMIZATION

Autogenous Grinding (SAG) mill in closed circuit with a hydrocyclone package. The gold extraction is done by leaching process using cyanidation method through a series of stirred tanks. In this research, an optimization study of Aghdarreh plant grinding circuit performance was done to lower the product particle size (P

OUTOTEC GRINDING TECHNOLOGIES

used where a narrow product size distribution is required (for example, for subsequent gravity separation). MH Series Grinding Mills A standard range of SAG, ball, and rod mills with spherical roller bearing technology, enabling faster delivery and start-up lead time. OUR MILL RANGE Pebble mills Outotec has a long history of successfully ...

SAG Mill Grinding Circuit Design

Finally, if the amount of critical size material removed from the mill is less than the crusher and secondary mills capacities, those mills can also be fed with a small fraction of the SAG mill trommel undersize in order to take full advantage of their installed power.

KnowledgeScape

GrindingExpert™ is a true turnkey solution for optimizing SAG and Ball mill circuits, and our technical abilities implementing it are second-to-none. The KnowledgeScape adaptive control solutions work together to see, listen, and think about the best way to increase tonnage and optimize SAG and ball mills at all times and for all conditions.

Design SAG mill production when you need it most: In day 1 ...

in a single stage SAG mill. Cyclones work best when the cyclone feed size is limited to 5 mm top size, as noted above when referring to screen selection. The product size is also a function of liberation and downstream requirements. SAG Mill ore hardness kWh/t: Energy required to grind an ore from F80 of 152 mm to T80 of 1.7 mm.

SAG/AG SCU - Millwatch

SAG/AG SCU SAG/AG Sentinel Camera Unit (SCU) Concept of System. The SCU uses the latest technology in high-definition imagery within a custom designed housing, permanently affixed to the feed chute to provide a live audio and temperature feed in a running SAG mill and video feed from inside a stationary SAG mill.

Case story: Monitoring noise to prevent mill damage

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.

calculates the grinding charge of a ball mill | Mining ...

calculates the grinding charge of a ball mill . ... OPTIMIZING SAG MILL PRODUCT SIZE IN SAG MILL _ BALL MILL GRINDING CIRCUITS. ... How Can i calculate the wear rate of grinding media in ball mills without having to go inside the mills and do the physical … how to calculate the mill charge ? ...

SAG mills -

SAG milling extends itself to many applications due to the range of mill sizes available. They can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill and some or all of the work done by a ball mill. SAG mills are also an optimum solution for wet grinding since crushing and screening in these ...

Grinding mills -

Every mining operation has a unique grinding process. has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.

Benchmarking: Yanacocha Single-stage SAG Mill - …

closing mesh size: 212 µm; work index: 16.52 metric units; We can add a couple of assumptions and work out the Mib value: test feed F 80 is 2300 µm (a typical feed size) test product P 80 is 155 µm (a typical product size for a 212 µm screen closing the test) test grindability is 1.58 g/rev (by calculation)

SAG Mill Optimization using Model Predictive Control

SAG Mill Optimization using Model Predictive Control ANDRITZ AUTOMATION Semi-Autogenous Grinding mills can be optimized for maximum ore throughput or maximum grinding energy efficiency. SAG mill, model predictive control, MPC, expert systems, optimization, Laguerre

sagdesign.com

The SAG test reproduces commercial SAG mill grinding conditions on 4.5 L of ore and determines the SAG mill specific pinion energy to grind ore from 80% passing 152 mm to 80% passing 1.7 mm (W SDT), herein referred to as macro ore hardness. The SAG mill product is then crushed to passing 3.35 mm and is subjected to the Bond ball mill work ...

Yanacocha Gold Single Stage SAG Mill Design, Operation ...

EGL, 16.5MW single stage SAG mill, to process 5 million tonnes per annum high grade oxide Au/Ag ore. Operational control, feed size distribution, grinding media, mill liner, grate and pulp lifter optimisation have allowed the mill to operate 15-30% above design throughput rates, but with a product …

SAG/Ball Mill Optimization | KnowledgeScape

Even though production was dramatically improved, the product size of the secondary ball milling was reduced and recovery increased. The results in SAG-Mill line 2 are even more dramatic. Because of segregation on the coarse feed stockpile, SAG-mill 2 receives a higher percentage of coarse material.

SINGLE STAGE SAG/AG MILLING DESIGN

types with the advantages of being comparatively low capital cost and flexible for future expansion. The single stage SAG/AG milling option is ideal for starter projects with significant exploration and expansion potential. Currently a number of the largest SAG mills designed are installed in single stage configuration. This paper discusses the