Computer simulations were performed to assess performance of two proposed new circuit flowsheets The first proposed flowsheet consists of existing SAG mill circuit and a new proposed ball mill in closed circuit with a new second hydrocyclone package The second

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Get PriceSAG mills in closed circuit with pebble fraction are more complicated than the single stage SAG mill operation, because the coarse pebbles behave significantly different to that of slurry in pulp , Performance of 26ft SAG mill with TPLTM The world’s first installation of TPL™ was done in a 26ft diameter by 125ft EGL SAG mill at Cortez ,

Get PriceSAG mill performance is sensitive to mill filli ng which influences the throughput capacity, power draw, and product grind from the circuit Each of these performance parameters peak at different ,

Get PriceSAG Mill Circuit Example — Gold Processing SAG mill circuit example for gold processing [image: (135-6-3)] AG/SAG Mill AG/SAG mills are normally used to grind run-off-mine ore or primary crusher product Wet grinding in an AG/SAG mill is accomplished in a slurry of 50 to 80 percent solids 2D and 3D simulations of particles in a SAG Mill

Get Pricecircuit 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

Get PriceSAG mill (4% ball charge, 90% Nc) A cross between AG and SAG for average competency, abrasive or Typically operated in RSA on Witwatersrand Gold Ore Driefontein (Underground), Kloof, Jacobina 6 SAG mill with recycle crusher (8 – 15% ball charge) Competent ores, better suited to coarse grind siz High aspect mills are recommended to ,

Get PriceEach milling circuit is unique, and as such the goals and most optimal control strategy might differ for individual cas 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

Get PriceGrinding mill machine is an essential part of many industrial processes, there are mainly five types of mills to cover more than 90% materials size-reduction applications Do you the difference between the ball mill, rod mills, SAG mill, tube mill, pebble mill? In the previous article, I made a comparison of ball mill and rod mill Today, we ,

Get PriceIn multi-stage ABC/SABC circuits, the AG or SAG mills are in closed circuit with screens and pebble crushers The mill discharge from these mills consists of slurry, which goes to the ball mills for further grinding, and coarse pebbles/rocks, which are crushed and sent back to the mill

Get PriceOptimizing Performance Of Sabc Comminution It is commonly referred to as a sabc circuit for semiautogenous ball mill crusher sabc this circuit shows a semiautogenous grinding sagball 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

Get PriceOperating conditions in a grinding circuit are frequently such that production is significantly reduced due to the effects of process disturbances, most notably those associated with the feed oreThis paper demonstrates the design of a robust control scheme for a semi-autogenous grinding (SAG) mill

Get PriceAutogenous and semi-autogenous grinding have experienced renewed interest as efforts to reduce operating and capital costs have increased As a result, the mill operator is faced with new equipment perhaps ten times as large as was common in the sixties and new circuit designs with different operating characteristics No longer can he grab a handful of mill discharge to estimate the size ,

Get Price(SAG) mill in closed circuit with two, 600 kW pebble crushers SAG milling is followed by a 24 x 39 ft, 13 MW ball mill in closed circuit with a cluster of 26 inch (660 mm) cyclon After classification, the milling product is thickened and pumped as feed to carbon-in-leach tanks The SABC circuit flowsheet is shown below in Figure 1 Figure 1 ,

Get PriceFigure 3 - Cone crusher performance curves Following the upgrades in the SAG mill circuit, sampling and modeling of the ball mill circuit identified a bi-modal hardness characteristic of the ore Evaluation with both MetCom and JK SimMet® lead to changes in the ball make up size from 75 mm to a 50:50 mix of 75 mm and 38 mm

Get PriceA stable SAG mill performance enables operations to push the limit to maximize throughput Control strategy implementation In the above graph, the progress of a well-implemented control strategy is to change from an unstable, highly variable operation to a stable, optimized SAG mill with a responsive controller adapting to dynamic ore and ,

Get Pricesimulation for a SAG milling circuit; Section 5 considers a case s tudy illustrating the performance audit on a SAG milling circuit simulation; and overall conclusions and future developments follow in Section 6 2 SAG MILLING CIRCUIT OVERVIEW Amongst the problems that face SAG mill ing operations are

Get PriceThere are two lines consisting of this SAG - ball mill combination where the SAGs are denoted as SAG1 and SAG2 Note Each SAG mill is operated in a closed circuit manner in conjunction with a typical trommel screen and pebble crushing circuit The ball mills are also operated in a closed circuit employing two hydrocyclone separators The,

Get PriceAG/SAG mills, circuit design, plant performance, optimization INTRODUCTION AG or SAG mills have been in use in comminution circuits since the 1950’s and are considered a mature technology in most countri However, a reasonable number of recent SAG mill based projects

Get PriceA SAG Mill trommel screen lets you control the true discharge size of your SAG mill or the transfer size to the downstream Ball Mill circuit A well sized trommel should not let rocks pass to the Ball Mill if they are to be more than say 5/8″ or 16mm In the image case below, strangely enough, is the mill shell liner and discharge grate ,

Get PriceJan 01, 2012· Based on process design information, the recent SAG mill history in relevant projects related to the new generation of commercial SAG mills, technical associated considerations and performance will be discussed Circuit selection based on energy utilization will be revised to bring up a more holistic perspective on the SAG mill circuit design ,

Get Pricein a SAG and Ball mill circuit where there is no scope for storage capacity between milling stages and throughput is normally limited by a bottleneck at one stage or the other In this case any ore with a high BWi value will have reduced throughput due to the ball mill despite the capability of the SAG mill ,

Get Pricesimulation for a SAG milling circuit; Section 5 considers a case s tudy illustrating the performance audit on a SAG milling circuit simulation; and overall conclusions and future developments follow in Section 6 2 SAG MILLING CIRCUIT OVERVIEW Amongst the problems that face SAG mill ing operations are

Get PriceOptimization of mill performance by using online ball and pulp measurements Soon after a stop, a mill is a dangerous place to enter for the personnel tasked with taking measurements or sampl Crash stops are difficult to handle The mill and all feed streams should be stopped simultaneously but, often, they are stopped around about the same time

Get PriceLead Mentor: Brent Sullivan, Senior Metallurgist Challenge Description Mt Keith was originally designed as a 6 Mt/a concentrator in 1994 Subsequent expansions and upgrades have taken the nominal throughput to 105 Mt/a, however the circuit can rarely maintain a feed rate that matches that Mill throughput is a key driver for maintaining profitability at Mt Keith because of the low head grade ,

Get Priceball and sag mill circuits in jamaica Los Andes Copper engineers a Vizcachitas alternative ,It is a combination of improved technology reduced fine grind requirements and maintenance benefits that led to Los Andes Copper replacing the SAG and ball mill crushing circuit proposed in its Vizcachitas coppermolybdenum project preliminary economic assessment PEA with a threestage crushing circuit ,

Get Price"Performance characteristics and optimisation of the Fimiston (KCGM) SAG mill circuit", Proc SAG '96, Vancouver, Vol 1 pp233-248 Tracking Hardness and Size: Measuring and Monitoring ROM Ore ,

Get PriceIt 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

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