What's the Difference Between SAG Mill and Ball Mill
Difference Between SAG Mill and Ball Mill, from the working principle, application, structure, etc Grind and blend solid or hard materials into smaller 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 Difference Between Sag Mill vs Ball Mill mech4study Modelling SAG milling power and specific energy ness 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" N/Nc Fresh Feed Water Water Pebble Crusher Screen Cyclones Sump Pump Fig 1 SABC A/B milling circuit Moredifference between a sag mill and ball mill Mining
OZMET Metallurgical Consultants providing process
Comminution Crushing, SAG and ball milling Gold and PGM processing Gravity gold recovery including gravity recoverable gold [“GRG”] testing, CIP/CIL Cyanide detoxification Flotation Gold, PGM and base metals Mass Balancing and Metallurgical Accounting Process Design and Optimisation Abstract: In semiautogenous grinding (SAG), the grinding mill inventory, (ie volume of total charge, volume of ball charge, etc) is important in determining the optimum operating condition for maximum production (tph), minimum specific energy (kwh/t) or lowest cost ($/t) A twodimensional graphical method is presented for determining the actual ball charge within the total charge when SAG mill ball charge determination and its influence SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computerbased modeling of charge motion in SAG mills and on established good design practice generate both thrown and cascading ballmilling actions with shell linings shaped to lift and to throw alloy steel grinding balls of up to Semiautogenous grinding (SAG) mill liner design and
Powerbased modelling of singlestage AG and SAG mill
F80 is the milling circuit feed 80% passing size, µm, fSAG is a calibration parameter for pebble crushing and/or fine feed (typically 10 for 80% passing six inch mill feed and when no pebble crusher is present) WiBM is the Bond ball mill work index, unitless CFnet is an empirical adjustment to a ball mill circuit [CFnet = 235 029 × ln(P80)] The mined ore is processed through a conventional semiautogenous grinding and ball milling, including a recycle crusher, (SABC) comminution and carboninleach (CIL) circuit together with a gravity gold recovery step with final residue reporting to a PITTOPLANT OPTIMISATION AT MORILA GOLD MINE SAG (semiautogenous) milling circuit is described with the emphasis on the process control systems employed The history of the circuit (process) controller is then discussed briefly to illustrate the differences between historical and new techniques The evolutions of the control philosophy, as well as the financial benefits, are described Expert mill control at AngloGold Ashanti
The process design of gold leaching and carboninpulp
ball milling circuits, typical of older installations (AG) circuits and primary single stage SAG circuits followed by secondary ball milling After comminution the pulp is normally dilute and thickening (612% solids by mass) is performed to increase The carboninleach (CIL) process, illustrated in Figure 3 is a Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24' (145 m) in diameter on 3,300 HP, the 911MPE Semi Fully Autogenous Mills tumble crushed ore without iron or steel grinding media They are used when the crushed ore pieces are hard enough to perform all the grinding SAG mills tumble mainly ore but they use up to 15% volume of steel balls to assist grinding Autogenous AG SAG Mills for Sale 911 Metallurgist Siddall, G B (1989) A review of SAG milling in AustraliaSAGSEM 89 Murdoch University, Perth, Western Australia, NovDec 1989 pp 822 CONCLUSIONS This paper has covered briefly the problems involved in the production of an expert system for a SAG/ball An Expert System for Control of a Sag/Ball Mill Circuit
OZMET Metallurgical Consultants providing process
Comminution Crushing, SAG and ball milling Gold and PGM processing Gravity gold recovery including gravity recoverable gold [“GRG”] testing, CIP/CIL Cyanide detoxification Flotation Gold, PGM and base metals Mass Balancing and Metallurgical Accounting Process Design and OptimisationSINGLE STAGE SAG/AG MILLING DESIGN SINGLE STAGE SAG/AG MILLING DESIGN up to 125 µm could be accepted with upgrades to the CIL circuitBased on the company's experience with low aspect mills grinding to 75 µm on the similar Witwatersrand ores in South Africa, a low aspect single stage SAG mill was selected low ball charge, SAG mills (PDF) SINGLE STAGE SAG/AG MILLING DESIGN SINGLE STAGE SAG • SAG and ball milling in closed circuit with a pebble crusher and hydrocyclones (SABC) to produce a P80 grind size of 106 µm • Leach and CIL circuit incorporating eight stages, with one stage of leaching without carbon and seven stages with carbon for gold adsorptionMajor Mines Projects Wahgnion (Banfora) Mine
Gold extraction QueensMineDesignWiki
SAG Milling breaks down ore through impact breakage, attrition breakage and abrasion The primary design variables in SAG mills include the aspect ratio and the rotation speed The rotation should be at a rate at which the ore material falls a maximum distance from the EF4 Oversized Feed when the grinding mill is fed a coarser than optimum feed, this factor applies to rod milling and ball milling The most frequent use is with single stage ball milling This is the one efficiency factor that is directly related to work index as is shown in the following equation:Quantifying Grinding Efficiency Grinding Metallurgist incharge of crushing, SAG and Ball milling, hydrocyclone classification, thickening, floatation, CIL, Knelson concentrator, inline leach reactor, AARL elution, Metallurgical Anthony Kaah Senior Mill Process and Production Engineer
Summary of Gold Plants and Processes ScienceDirect
3 Conclusions The information in Table 541 has been captured from the chapters in this book It is not intended to be more than a summary reference to get a flavor of the processes that operating gold plants have implemented to overcome the issues pertaining to their particular ore mineralogy and water chemistry, and the many other sitespecific factors that come into play Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24' (145 m) in diameter on 3,300 HP, the 911MPE Semi Fully Autogenous Mills tumble crushed ore without iron or steel grinding media They are used when the crushed ore pieces are hard enough to perform all the grinding SAG mills tumble mainly ore but they use up to 15% volume of steel balls to assist grinding Autogenous AG SAG Mills for Sale 911 Metallurgist ball milling circuits, typical of older installations (AG) circuits and primary single stage SAG circuits followed by secondary ball milling After comminution the pulp is normally dilute and thickening (612% solids by mass) is performed to increase The carboninleach (CIL) process, illustrated in Figure 3 is aThe process design of gold leaching and carboninpulp
difference between a sag mill and ball mill Mining
comparison of hpgr ball mill and hpgr comparison of hpgr ball mill and hpgr stirred mill circuits to the existing ag/sag mill ball mill circuits by chengtie wang beng, university of science and technology beijing, 2009 a thesis submitted in partial fulfillment of the requirements for the degree of master of applied science in the faculty of graduate studies (mining The ore will be treated using 45 million tonnes of ore per annum using proven SAG and ball milling, and carboninleach (CIL) technology Recoveries are expected to average 76% for gold and 55% for silver Production and costsMartabe, North Sumatra Mining Technology BALL MILL ACE 5 CRUSHER ACE 6 SAG MILL ACE 8 limited to, crushing, SAG and ball milling, flotation, thi ckening The Collahuasi copper mine is situated in northern Chile, concentrator site in order to tightly control the weight Get Pricecopper ore concentrator ball mill Prominer (Shanghai
Jurry Kaloh Mechanical Coordinato at Sag/Ball Mills
The open cut mine, with an average strip ratio of less than 14:1, and a conventional processing circuit incorporating jaw crushing, SAG and ball milling and CIL, processes in excess of 45mtpa to produce greater than 250,000 ounces of gold and 3 million ounces of silver annuallyThe plant consists of ROM crushing and milling (SAG/Ball) followed by thickening, CIL and AARL elution Tailings is thickened and detoxified of cyanide prior to being deposited on a Nevsun Resources is a Canadian Junior with the Bisha Project in Eritrea it’s only operation The John Connell Durban Area, South Africa EF4 Oversized Feed when the grinding mill is fed a coarser than optimum feed, this factor applies to rod milling and ball milling The most frequent use is with single stage ball milling This is the one efficiency factor that is directly related to work index as is shown in the following equation:Quantifying Grinding Efficiency Grinding
Orezone/IAMGOLD Essakane Gold Mine Mining
The milling plant will be a standard SAB configuration with a 30ft diameter by 14ft EGL primary SAG mill rated at 7MW feeding a 20ft diameter by 335ft EGL ball mill, also rated at 7MW The SAG mill will be equipped with a variablespeed drive while the ball mill will run at a fixed speed 3 Conclusions The information in Table 541 has been captured from the chapters in this book It is not intended to be more than a summary reference to get a flavor of the processes that operating gold plants have implemented to overcome the issues pertaining to their particular ore mineralogy and water chemistry, and the many other sitespecific factors that come into playSummary of Gold Plants and Processes ScienceDirect