The Selection and Design of Mill Liners . ... Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U$25,000 per ... advantages and disadvantages: 1.
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.
Detecting the onset of overloading in a semi-autogenous grinding (SAG) mill is a challenging task for operators to perform due to the complex and nonlinear nature of an overload. To detect an overload, operators must simultaneously monitor the correlations between several measurements of the SAG …
sag mill disadvantage; SAG Mill Grinding Circuit Design Semi Autogenous Design FactorsSag Mill Operation ExampleProcess Plant DescriptionSag Mill Design and SpecificationOperating Problems Since CommissioningDesign Changes and Future Operating Strategies The design of large mills has become increasingly more complicated as the size has increased and there is little doubt that without ...
Developments 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 …
operating at 90% of its maximum power. The combined power draw of the SAG mill and ball mill was 8658 kW, which caused partial over-grinding. From experience in processing plants outside of China, the power rating of the ball mill should be higher than that of the SAG mill [5]. The pebble crusher had an over-powered configuration.
What is a ball mill? A ball mill is a milling machine that consists of a hallow cylinder containing balls, mounted on a metallic frame such that it can be rotated along its longitudinal axis. The balls which could be of different diameter occupy 3...
Rubber Metal Composite Liners for AG/SAG Mills Polycorp has a long, successful heritage in the mining industry and is recognized as one of the leading mill liner manufacturers in the world. Polycorp has installed liners in mills up to 32ft/9.8m, and has supplied Mill …
Sag mill advantages - saluteindiainag mill advantag sag mill advantages grinding mill equipment sag mill advantages sand washing machine ball mill ore crusher price a ball mill is a type of grinder used to grind and blend materials for use in mineral dressing47 online disadvantage of horizontal grinding ball mill.
SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING ... The SAG mill has a trommel on the discharge end of it. Oversize is returned to the mill by a bucket wheel and water jet. Trommel undersize was pumped to a vibrating screen where the ... The disadvantage is a possible structural failure. If a structural failure occurs, you had
Another requirement is that the finer sizes should break easily and should be removed from the mill, otherwise, there will be a critical size buildup. Autogenous grinding has two advantages, (1) it reduces metal wear and (2) eliminates secondary and tertiary crushing stages. Thus it offers a savings in capital and operating costs.
Oct 12, 2017· Today we will learn about difference between sag mill vs ball mill. A mill is a machine by which solid or hard materials are broken into smaller pieces by means of grinding, crushing or cutting. This commutation is an essential part of many processes. Various kinds of mills are there with which different material processing takes place.
Optimization 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 samples. 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.
advantages and disadvantages of ball mill grinding. ball mills advantages and disadvantages of ball mills … XBM's Ball mills that incloud roller mill,ball end mill,ball mill,ball milling,grinding mill,sag mill …
A ball mill is a type of grinder used to grind and blend materials for use in ... advantage and disadvantage of grind mill hammer mill advantage and disadvantage... Get Price Ball-Screw Design: The Advantages of Internal Ball Returns ...
Dec 19, 2014· Advantages of the wound rotor/SER drive are: If the SER converter drive fails, the drive can be switched to fixed speed bypass - starting the usual way with the LRS. The converter only needs to be sized for 15-20% of the total motor rating with associated reduction in floor space, air-conditioning etc.
II-314 RoM Ball mills – a comparison with AG/SAG Milling Aubrey N. Mainza1 and Malcolm S. Powell 1 1Mineral Processing Research Unit, University of Cape Town, Rondebosch, 7700, South Africa ...
Mill lining optimization increases wear life by 36% at TISCO. Special ore properties have made it very difficult for TISCO Yuanjiacun Iron Mine to find a mill lining that lasts. 's optimized metallic mill lining solution puts an end to years of application testing. Nevertheless, is continuing to improve the solution even further.
In a SAG mill, operation with variable speed presents significant advantages in terms of productivity and efficiency [6]. However, as the speed increases, the load is partially lifted in the SAG ...
Mar 31, 2016· NAIPU provide composite liners and rubber liners for MILL, compare with traditional alloy liner, rubber liner and composite liner have many advantages .alloy plate has some problem as high ...
Difference Between Sag Mill vs Ball Mill - mech4study
The product separator is one of the key advantages of the IsaMill™ design. The 8 consecutive grinding chambers, and high tip speed of the separator means that the mill constantly delivers sharp sizing performance. There are no screens or trommels to fail or block, any particle that leaves the mill must escape the same centrifugal forces.
Sag Mill — Advantages. Simplify the crushing and grinding process; feeding particle size is 200-350mm, and after the first autogenous grinding, the product particle size reaches below a few millimeter. It is suitable for ore with high content of mud and water; small area taken, low investment.
SAG mill is an investment that can produce handsome returns if extra production is needed or simply to give the mine the option to mill the hardest ores at design throughput rates. Typical tests required to define a hardness variability function, are given below in Figure 1.
general, the bigger the mill diameter, the lower are the mill operating and critical speeds. Thus, for larger mills the number of poles will increase. As a result, the number of poles can vary from 48 to 72 poles (Fig. 3.) with typical mill speed requirements of about 10 rpm for larger SAG mills and about 15 rpm for smaller ball mills. Figure 3.
Rethinking the value of mill relining ... (SAG) mills, because of their advantages in terms of capital and operating costs, were the natural choice for mines as their primary grinding mill option. ... The high-wear liner components of a large SAG mill can take anywhere from 40-120+ hours to replace, depending on worn liner condition, support ...
ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills
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.