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AG AND SAG MILL CIRCUIT SELECTION AND DESIGN BY SIMULATION Dr S Morrell and Dr R D Morrison2 1 Manager Comminution Research 2 Manager JKTech Julius Kruttschnitt Mineral Research Centre Isles Road Indooroopilly Brisbane Australia SUMMARY The JKMRC AGISAG model typically requires a full scale plant or pilot mill survey combined with ore
The power calculated on using equation 1 Bond 1961 Rowland and Kjos 1978 relates to 1 Rod milling – a rod mill with a diameter of 244 meters inside new liners grinding wet in open circuit 2 Ball milling – a ball mill with a diameter of 244 meters inside new liners grinding wet in open circuit
design of a plant for Adanac Moly Corp to include SAG and Ball milling The hardness of each sample was measured in terms of SAG power index SPI for SAG grinding and Bond Ball mill work index BWi for ball mill grinding A further measure the Minnovex crusher index Ci was also measured for use in the CEET program to determine SAG
In a ball mill circuit the output can be defined as the production rate of fines of the circuit As for any output ball mill circuit output is a function of both its inputs and efficiencies There are two inputs to a ball mill circuit the ore fed to the circuit and the power delivered by the grinding mill
possible by developing a simple yet thorough test program for circuit design By drawing on the experience of current magnetite operations in Australia and the Mesabi and Marquette iron ranges in the United States a basic flowsheet was developed Through comprehensive testwork with AG ball
Ball Mill Circuit Design Calculation 2009827the process design of gold leaching and carboninpulp circuits 14 januaryfebruary 1999 the journal of the south african institute of mining and metallurgy figure 2the carboninpulp cip process figure 1computeraided process engineering cape
Ball Mill Design A survey of Australian processing plants revealed a maximum ball mill diameter of 524 meters and length of 884 meters Morrell 1996 Autogenous mills range up to 12 meters in diameter
Ball Mill Circuit Design Calculation 20151216 · design of a plant for Adanac Moly Corp to include SAG and Ball milling The hardness of each sample was measured in terms of SAG power index SPI for SAG grinding and Bond Ball mill work index BWi for ball mill grinding
We bring forth a highly advanced Ball Mill specifically engineered for both wet as well as dry cement grinding applications Classified depending on the circuit design bearing grinding type and drive the selection is made on the basis of the product fineness quality and nature of raw material site conditions and specific requirements
Jan 14 2019· They are often used for feeding rod mills operating in open circuit or mills in closed circuit with hydrocyclone classifiers figure 7 Spout feeder Drum feeders Drum feeders attached figure 8 Drum feeder on ball mill may be used as an alternative to a spout feeder when headroom is limited
The Preliminator mill is a type of ball mill used for coarse grinding in open circuit or for fine grinding in closed circuit Preliminator mills are widely used in the cement industry for the reduction of cement raw materials and clinker
ball mill circuit design calculationTraditionally many engineers approached SAG circuit design as a division of the total power between the SAG circuit and ballmill circuit often at an arbitrary power split If done without due consideration to ore characteristics benchmarks against comparable operating circuits and other aspects of detailed design including steadystate
The designed ball milling circuit product is 80 passing 150 µm Several large tonnage copper porphyry plants in Chile use an opencircuit SAG configuration where the pebble crusher product is directed to the ball mills SABCB circuit
Design features of grinding equipment SAG BALL and ROD MILLS AG Mill Ball Mill Crusher ABC Circuit This can be used to correct a too coarse product from the primary mill Mostly operated wet but also dry possible AG Mill Pebble Mill AMIT 135 Lesson 6 Grinding Circuit
The circuit consists of a 60 x 113 primary crusher two 16 MW SAG mills and two 16 MW ball mills All four mills are twin pinion with wound rotor motor and gearbox drives
Controlling the performance of a closed circuit ball mill is a challenging problem due to its complex dynamic characteristics and heavy interactions among the control loops Traditionally the grinding circuits are controlled by multiloop PID controllers which
Dear Specialists Im designing a ball mill circuit to grind the crushed gold ore from F80 95mm to P80 130 microns simulation showed if we use one ball mill it would be 3m x 43m with 800hp motor and if I use 2 ball mills with same power then each would be 25m x 39m and 420hp to split the pow
ball mill circuit design calculation ball mill design calculation free downloadmanuals and design calculations forcontrol factors and design of such circuitsBall Mills SME 2009 Impact on Grinding Mill Design and RecentIMPACT ON GRINDING MILL DESIGN OFto Bond BM Wi is a key parameter in a SAG mill grinding circuit designSAG milling and ball milling Theget price
With more than 100 years of experience in ball mill technology 's ball mills are designed for long life and minimum maintenance They grind ores and other materials typically to 35 mesh or finer in a variety of applications both in open or closed circuits
circuit comprised of a 61 m diameter x 274 m long SAG mill and a 41 m diameter x 55 m long secondary ball mill in closed circuit with cyclones was built using SAG Power Index and Bond Ball Mill Work Index testing to determine the grinding energy requirements
Further validation of these ballmill scaleup procedures is under way If proved it offers a useful tool in greenfield design of ball milling circuit Grinding in a ball mill is effected by point contact of balls and ore particles and given time any degree of fineness can be achieved
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