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Online servicesOct 12 2017 · SAG mill make use of steel balls included with some large and hard rocks for grinding These mills utilize the balls in making the large fragments of materials broken into pieces The ball charge of a SAG mill is about 9 to 20This process takes place inside the large rotating drum of SAG mill which is filled with balls partially
Learn MoreAGSAG 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 Because of the range of mill sizes available AGSAG milling can often be accomplished with
Learn MoreA SAG mill with a 44 134m diameter and a power of 35 MW 47000 HP has been designed Attrition between grinding balls and ore particles causes grinding of finer particles SAG mills are characterized by their large diameter and short length as compared to ball mills
Learn MoreAGSAG 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 Because of the range of mill sizes available AGSAG milling can often be accomplished with
Learn MoreA RAPID SAG MILL GRINDABILITY AND MILL SIZING ANALYSIS PROGRAM ABSTRACT Engineering feasibility studies have become a significant cost in the mining industry particularly when a full stage gate approach is used A portion of this cost is also a function of the time taken to complete the studies and this can be significant as large studies can
Learn MoreThe SAG mill had a 6–8 ball charge and the power consumption was 8 kWht which agreed well with the expected value 96 Problems 91 In an SAG mill the dimensions of the mill were 975 m × 35 m and the specific gravities of the mineral and that of the balls charged were 41 and 79 respectively
Learn MoreRestated the designed SAG mill size and operating conditions typically control circuit throughput while the ballmill circuit installed power controls the final grind size Aside from parameters fixed at design mill dimensions installed power and circuit type the major variables affecting AGSAG mill circuit performance throughput and grind attained include
Learn MoreFor AGSAG mills pebble porting allows the critical size rocks to be withdrawn from the mill and crushed using incircuit recycle crushers or crushed and rerouted to the ball mills if there is
Learn MoreMost mills used in mining rely on impact to breakdown rock to a suitable size for downstream processing The impact can be rock on rock such as in an Autogenous Grinding AG mill rock and a small ball charge 10 used in Semi Autogenous Grinding SAG mills balls of various sizes in Ball Mills and less commonly these days steel rods in Rod Mills
Learn MoreEarly SAG mills had a diameter of about 32 later increasing to 34 36 38 and 40 At the same time the mill volume also increased Typically a SAG mill has a much larger diameter compared to its length Yet the SAG mill of Newmonts Yanacocha mine in Peru is a single stage mill no ball mill after the SAG mill Get the price
Learn MoreSAG 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 cyclones After classification the milling product is thickened and pumped as feed to carboninleach tanks The SABC circuit flowsheet is shown below in Figure 1
Learn Moreintermediate size ready for final grinding in a ball mill pebble mill or VERTIMILLTM Wet grinding is accomplished in a slurry of 50 to 80 percent solids AGSAG 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
Learn MoreEarly SAG mills had a diameter of about 32 later increasing to 34 36 38 and 40 At the same time the mill volume also increased Typically a SAG mill has a much larger diameter compared to its length
Learn MoreFrom the literature it is apparent that in circuit design some approaches to the sizing of AGSAG mills as well as the ball mills that they feed use this parameter
Learn Moresag mill dimension sag mill dimension In the building aggregate industry Shibang Industrial uses the jaw crusher impact crusher cone crusher and sand making machine as the core crushing equipment On this basis we have developed 10 series and more than 100 models to form high medium and low collocations which fully meet the production needs of customers for
Learn Moredesign being calibrated to a twostage circuit with AG or SAG mill product being passed to a pebble mill or ball mill stage for finished grinding The twostage circuit includes a “transfer size” of AGSAG product that becomes the feed to the closedcircuit ball mill
Learn MoreA 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 58″ or 16mm In the image case below strangely enough is the mill shell liner and discharge grate manufacturer
Learn MoreSAG mills mimic the same shortcoming It follows that in order to obtain the speciﬁ c energy SE to achieve a certain transfer size based on the 80 per cent passing value an inefﬁ ciency factor must be applied to the SE of single stage ball mills rod mills or AGSAG mills when calculating power according to the Bond Third Theory method
Learn MoreEarly SAG mills had a diameter of about 32’ later increasing to 34 36 38 and 40’ At the same time the mill volume also increased Typically a SAG mill has a much larger diameter compared to its length Yet the SAG mill of Newmont’s Yanacocha mine in Peru is a
Learn More•Decreasing the SAG mill diameter by 2 feet from 36 to 34 ft causes a 2 MW reduction in installed SAG power or an 18 decrease from 11 to 9 MW This energy can reduce grinding capacity by about 9 considering the ball mill if it also has 11 MW of installed power
Learn MoreThese equations are used by SMCC Pty Ltd to estimate the specific energy of AGSAG mills under all normal operating conditions eg ball load mill speed feed size and ore hardness and for all
Learn MoreDevelopments in SAG Mill Design and Operation Over the last few years SAG mill manufacturing technology has advanced rapidly The bounds of mill size have been pushed from two directions Firstly the advent of ring motors has removed the constraint applied by the power that a
Learn MoreDepending on the mill size the SAG mills draws between 2 MW and 17 MW The product from the SAG mill is further reduced in size using pebble crushers and ball mills Hence typical gold or copper ore requires between 20 and 75 kWh per ton of energy to reduce the particle size
Learn MorePDF 1044 K Journal of Mining and Environment this plant includes one SAG mill in a closed circuit with a vibrating screen and one ball mill with a size conveyor belt to the SAG mill
Learn Moreness of the models For a given mill to have a combination of feed size ball load mill speed and solids will represent the total load Ball Mill SAG Mill Scw Jb Pc 6 1 NNc Fresh Feed Water Water Pebble Crusher Screen Cyclones Sump Pump Fig 1 SABC AB milling circuit
Learn MoreSAG Mill Grinding Circuit Design 911 can sag mill and ball mill have the same dimensions SAG mills have a higher installed power density for a input kWht than an SAG circuit milling the same ore but at a While criticalsize could be of any dimension it isMill grinding WikipediaA mill is a device that breaks solid materials into
Learn MoreAGSAG 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 Get Price Model Predictive Control for SAG Milling in Minerals
Learn MoreAGSAG mills can accomplish the same size reduction work as two or stages of crushing and screening a rod mill and some or all of the work done by a ball mill All because of the range of mill sizes available AGSAG milling extends itself to many applications
Learn MoreAutogenous AG and semiautogenous mills SAG are used for the coarse grinding The wet grinding plant for gold ore consists of an SAG mill and a ball mill Get Price can sag mill and ball mill have the same dimensions BINQ
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