optimizing sag mill product size in sag mill ball mill circuit

SINGLE STAGE SAG/AG MILLING DESIGN

SINGLE STAGE SAG/AG MILLING DESIGN Brian Putland 1 even with a high ball charge or mill speed the circuit selection may be incorrect. If a recycle crusher was not included it should be trialled. If included the use of a Requiring a fine product size suggests that the downstream

FREDA REBECCA SAGMILLING CIRCUIT OPTIMIZATION

respect with SAG mills being increasingly less sensitive as the ball charge is increased (Morrel S and Valery W 2001). 2.2. EFFECT OF FEED SIZE DISTRIBUTION ON SAG MILLING The qualitative effect of changes in particle size distributions (PSD) on the SAG mill performance can be addressed by using the grind curves.

Optimum choice of the make-up ball sizes for maximum

However as a group they are not entirely satisfactory because the optimum mixture of balls depends on the feed size as well as the product size. Further the ball size distribution in the mill is not a simple parameter that can be controlled directly as it depends on the make-up ball charge and wear rate.

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.

Grinding millsfor mining and minerals processingMetso

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.

Mill Chargean overview ScienceDirect Topics

SAG mills of comparable size but containing say 10 ball charge (in addition to the rocks) normally operate between 70 and 75 of the critical speed. Dry Aerofall mills are run at about 85 of the critical speed. The breakage of particles depends on the speed of rotation.

BATU HIJAU MILL THROUGHPUT OPTIMIZATION MILLING

grinding specific energy (SAG mills and ball mills kWh/t) appears more strongly influenced by BWi and suggests grinding will tend to be more ball mill circuit limited at lower head grades. The limiting changeover point coincides with a Ball Mill Work Index of about 12 kWh/t to 13 kWh/t.

(PDF) OPTIMIZATION OF THE SAG MILL CIRCUIT AT KINROSS

circuit (a SAG mill followed by two Ball m ill lines). The Run of Mine (ROM) ore s ent o the SAG mill plant is transported from the open pit by truc ks and dumped to a griz zly.

Selection of Comminution Circuits for Improved Efficiency

In addition the size distribution and grinding circuit chemistry may impact on the performance of the downstream circuit (Lane 1999 and Rantanen 1996). Fully autogenous circuits are attractive due to the elimination of steel media costs. Typically a SAG mill based circuit (P80 of 106 to 150 um) has media costs of around A 1/t.

Selection of Comminution Circuits for Improved Efficiency

In addition the size distribution and grinding circuit chemistry may impact on the performance of the downstream circuit (Lane 1999 and Rantanen 1996). Fully autogenous circuits are attractive due to the elimination of steel media costs. Typically a SAG mill based circuit (P80 of 106 to 150 um) has media costs of around A 1/t.

Selection of Comminution Circuits for Improved Efficiency

In addition the size distribution and grinding circuit chemistry may impact on the performance of the downstream circuit (Lane 1999 and Rantanen 1996). Fully autogenous circuits are attractive due to the elimination of steel media costs. Typically a SAG mill based circuit (P80 of 106 to 150 um) has media costs of around A 1/t.

SAGMILLING . . Articles

Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a closing mesh to give a P80 close to desired grind size.

Optimization and Control of a Primary SAG Mill Using Real

the primary mill product in an attempt to control and possibly reduce flotation feed size variability. The objectives of this study were to 1. Evaluate the suitability and reliability of the in-line instrument used to measure real-time data 2. Determine the minimum sampling frequency necessary to capture sufficient circuit dynamics for real-time

Throughput optimisation in milling circuits

Each milling circuit is unique and as such the goals and most optimal control strategy might differ for individual cases. Process IQ is an expert in implementing control systems for SAG and Ball milling circuits making use of advanced stabilisation and optimisation strategies developed by Mintek.

optimization of sag mill circuitskolka-kubicek

SAGBall Mill Optimization KnowledgeScape. MillScanner is the ultimate tool for increasing SAG mill throughput and reliability GrindingExpert isn t just about SAG mills Our GrindingExpert solutions include ball mill strategies that achieve the target grind size while maximizing throughput or when the circuit is SAG mill limited achieve the finest grind size possible thus increasing mineral

Optimum SAG Mill Discharge DensityGrinding

Relation between Sag mill solid and product P80 Both are dependent on feed size. Dependent on Volume solids in SAG mill. Dependent on ball charge volume. Hardness of ore. Recirculation Relation between Sag mill solid and product P80 Both are dependent on feed size. Dependent on Volume solids in SAG mill. Dependent on ball charge volume. Hardness of ore. Recirculation load. Dependent on P80 size. All other parameters are secondary. In general Sag mill solids are kept at 70 by wt. Operating grinding circuit is an art.

sag mill mechanical design pdfnivelles-swimming-team

SAG Mill Grinding Circuit Design. 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 28 MW (38 000 HP) motor

SAG Mill Grinding Circuit Design

Semi Autogenous Design Factors

(PDF) SAG mill circuit optimisation at Ernest Henry Mining

receives combined ball mill a nd subscreen deck size SAG mill discharge material via a 20/18 Warman centrifugal pump running with a 1700 kW variable speed motor and gearbox.

Optimum choice of the make-up ball sizes for maximum

However as a group they are not entirely satisfactory because the optimum mixture of balls depends on the feed size as well as the product size. Further the ball size distribution in the mill is not a simple parameter that can be controlled directly as it depends on the make-up ball charge and wear rate.

Autogenous and Semi-Autogenous MillsMetso

The feed size for these mills is limited to the maximum size that can be practically conveyed and introduced into the large mill feed chutes. And the product of the large AG/SAG grinding is either The feed size for these mills is limited to the maximum size that can be practically conveyed and introduced into the large mill feed chutes. And the product of the large AG/SAG grinding is either a finished size ready of processing or an immediate size for further grinding in a ball mill pebble mill VERTIMILL® or a stirred media detritor

Outotec Grinding MillsOutotec

We offer autogenous (AG) semi-autogenous (SAG) ball rod and pebble mills in sizes ranging from kWs up to 30 MW. Our product range also includes a number of unique solutions including the world s largest acid-resistant grinding mills which can operate with extremely corrosive slurry.

Autogenous and Semi-Autogenous MillsMetso

The feed size for these mills is limited to the maximum size that can be practically conveyed and introduced into the large mill feed chutes. And the product of the large AG/SAG grinding is either a finished size ready of processing or an immediate size for further grinding in a ball mill pebble mill VERTIMILL® or a stirred media detritor

AG and SAG Mill Circuit Selection and Design by Simulation

AG AND SAG MILL CIRCUIT SELECTION AND DESIGN BY mills and product sizes. The model is also used to describe in de- erably with factors such as ball load mill speed and feed size

ChapterM 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

Optimizing Performance of SABC Comminution Circuit of the

It is commonly referred to as a SABC circuit for Semi-Autogenous Ball mill Crusher (SABC). This circuit shows a semi-autogenous grinding (SAG)/ball mill circuit where both grinding mills are in closed circuit with the SAG mill closed with a crusher to control the amount of critical size material in the circuit.

SAG Conference 2019 AgendaFinal

A Particle Scale Model for Simulation of SAG Mill Process Performance Model Components and Application to Pilot and Industrial Scale Mills Sinnott Cleary Morrison Optimizing Ball Mill Selection for a HPGR Ball Mill Circuit Wong Mackert Lipiec Remmers Burchardt Vanderbeek A Review of Published Full-Scale Stirred Mill Results

INCREASING SAG MILL CAPACITY AT THE COPPER

a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From startup the mill struggled to meet the required production rates. Over time a major initiative that involved blasting and fragmentation optimization of the SAG mill in terms of discharge grates ball size

Optimizing Performance of SABC Comminution Circuit of

circuit is shown in Figure1. It is commonly referred to as a SABC circuit for Semi-Autogenous Ball mill Crusher (SABC). This circuit shows a semi-autogenous grinding (SAG)/ball mill circuit where circuit is shown in Figure1. It is commonly referred to as a SABC circuit for Semi-Autogenous Ball mill Crusher (SABC). This circuit shows a semi-autogenous grinding (SAG)/ball mill circuit where both grinding mills are in closed circuit with the SAG mill closed with a crusher to control the amount of critical size material in the circuit.

(PDF) Optimisation of the Cadia Hill SAG mill circuit

Effects of increased ore hardness on mining practice current crushing and ball mill circuit and future SAG mill capacity were evaluated and recommendations for optimisation are outlined. View

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.

Mill (grinding)Wikipedia

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 28 MW (38 000 HP) motor.

INCREASING SAG MILL CAPACITY AT THE COPPER

a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From startup the mill struggled to meet the required production rates. Over time a major initiative a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From startup the mill struggled to meet the required production rates. Over time a major initiative that involved blasting and fragmentation optimization of the SAG mill in terms of discharge grates ball size

optimization of sag mill circuitskolka-kubicek

SAGBall Mill Optimization KnowledgeScape. MillScanner is the ultimate tool for increasing SAG mill throughput and reliability GrindingExpert isn t just about SAG mills Our GrindingExpert solutions include ball mill strategies that achieve the target grind size while maximizing throughput or when the circuit is SAG mill limited achieve the finest grind size possible thus increasing mineral

Grinding Circuitan overview ScienceDirect Topics

The crushed pebbles fall directly onto the SAG mill feed belt and return to the SAG mill. SAG mill product feeds two parallel ball mills of 6.6 m 11.1 m (internal diameter length) each with a 9.7 The crushed pebbles fall directly onto the SAG mill feed belt and return to the SAG mill. SAG mill product feeds two parallel ball mills of 6.6 m 11.1 m (internal diameter length) each with a 9.7 MW twin pinion drive. The ball mills are operated at a ball charge volume of