Working Of Ball Mill And Sag Mill
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Early in the Mill #2 life the ore had been predominantly ball mill limiting in that the ore basically "blew through" the SAG mill due to its already small size Regardless of this budget throughput targets that surpassed the original plant design figures were consistently being met As such
Dec 06 2015Most 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 Grind
Antamina Compania Minera Antamina S A Peru Project One SAG Mill and 3 Ball Mill Drive Systems Capacity SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant Bechtel USA Mill Builder FFE Minerals USA Mill Size SAG Mill 38 feet/11 58 m Ball Mills 24 feet/7 32 m Ore processed Copper/Zinc Drive Rating SAG Mill 20 1 MW 9 23 rpm Ball Mills 11 2 MW 11 38 rpm
The grinding circuit for the Copper Mountain project consists of one FL SAG mill and two FL ball mills Figure 1 - Overview grinding circuit The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334
advanced technology has the capacity of manufacturing of ball mill rod mill cement mill AG mill and SAG mill Ball mill is an efficient tool for grinding medium hardness ore and other materials and widelyused in many industries such mineral preparation metallurgy chemical industry building material thermal power industry and etc
AG/SAG Mill AG/SAG 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 AG/SAG milling can often be accomplished with fewer lines than in a conventional rod mill/ball mill circuit
The operating principle of the ball mill consists of following steps In a continuously operating ball mill feed material fed through the central hole one of the caps into the drum and moves therealong being exposed by grinding media The material grinding occurs during impact falling grinding balls and abrasion the particles between the balls
We have 44 years experience designing manufacturing installing and commissioning SAG and Ball Mill grinding equipment We have nearly 30 years experience procuring and re-applying used grinding equipment to new mining projects often with significant lead time and capital cost savings over the purchase of new equipment
Simultaneous reline of SAG and ball mills completed with - Outotec Outotec In Action The Prominent Hill operation comprises both an open pit mine and a newly developed underground operation with a 10Mtpa milling capacity Ball Mill Working principle When the ball mill works motor and speed reducer transmit torque force to big and
It is important to note that the Bond Ball Mill Work Index on SAG ground ore is similar to but not the same as a crushed Bond Ball Mill Work Index It is ~ 7% higher because the SAG mill grinds the softest components quickly and leaves the harder material to be ground in the ball mill Figure 3 presents the graph of SAG pinion energy vs BWi
Sagmilling is home to a collection of both free and subscription-based calculation tools to aid metallurgical process engineers perform comminution calculations Grinding circuit design tools including for SAG mill-ball mill circuits and geometallurgy energy models are available to subscribers
Apr 26 2018Optimize your SAG Mill operation using EDEM tools for analyzing the motion of rocks and balls power consumption wear and ball particle distribution through time Use EDEM Analyst features and export simulation results to help predict and control the performance of SAG Mills
The ball mill accepts the SAG or AG mill product Ball mills give a controlled final grind and produce flotation feed of a uniform size Ball mills tumble iron or steel balls with the ore The balls are initially 5–10 cm diameter but gradually wear away as grinding of the ore proceeds The feed to ball mills (dry basis) is typically 75 vol
SAG MILL GRINDING DESIGN VERSUS GEOMETALLURGY – It is important to note that the Bond Ball Mill Work Index on SAG ground ore is similar to but not the same as a crushed Bond Ball Mill Work Index It is ~ 7% higher because the SAG mill grinds the softest components quickly and leaves the harder material to be ground in the ball mill
Where the SAG mill/ball mill circuit is the bottleneck in the processing plant the pebble circuit can be a significant factor in limiting overall plant capacity The pebble circuit recirculating load can be very significant (depending on the ore characteristics and SAG mill operating dynamics)
Morrell SMC (Mib) SAG and ball mill circuit model (uses the umclosing F80 P80 and gpr values to calculate Mib) It is also used in the CEET2 model (distributed by SGS ) and is commonly used by people running the JK SimMet population balance model (distributed by JK Tech )
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how works ball mill How Does Ball Mill Work? Ball mill is a grinder for reducing hard materials to powder The grinding is carried out by the pounding and rolling of a charge of steel Ball Mill How It Works? Heavy Industry Get Price How a Grate Discharge Ball Mill
Where the SAG mill/ball mill circuit is the bottleneck in the processing plant the pebble circuit can be a significant factor in limiting overall plant capacity The pebble circuit recirculating load can be very significant (depending on the ore characteristics and SAG mill operating dynamics)
SAG milling Process control abstract The operation of AG/SAG mills is sensitive to mill ﬁlling therefore developing grindcurves to relate mill ﬁllingto performance indicatorssuch as throughput power draw and product size can assist in achieving optimal mill operations The throughput power draw and product size have been shown to peak at dif-
Ball Mills The basic construction of a ball mill is a cylindrical container with journals at its axis The cylinder is filled with grinding media (ceramic or metallic balls or rods) the product to be ground is added and the cylinder is put into rotation via an external drive causing the media to roll slide and cascade
4 High ball charge SAG mill or ROM Ball mill (15 to 25% ball charge) Low competency ore Hidden Valley Nzema Sepon UG2 ores (South Africa) Yanacocha 5 Low ball charge high speed SAG mill (4% ball charge 90% Nc) A cross between AG and SAG for average competency abrasive ores Typically operated in RSA on Witwatersrand Gold Ore Driefontein
A ball mill is a type of grinder used to grind blend and sometimes for mixing of materials for use in mineral dressing processes paints pyrotechnics ceramics and selective laser sintering It works on the principle of impact and attrition size reduction is done by impact as
SAG Mill It accepts energy in the form of Redstone Flux or Minecraft Joule with an internal buffer of 100 000 RF and consumption of 20 RF per tick The energy storage capacity and processing speed can be increased by adding one of 3 tier of Capacitor into the upgrade slot The energy consumed varies on the item processed
Working Of Ball Mill And Sag Mill Riversidevetscoza Mineral and mining engineering what is the working ball mill working principle when the ball mill works motor and speed reducer transmit torque force to big and small gears of ball mill so the barrel the barrel rotates steel balls or other grinding media in the barrel are
AG/SAG Mill AG/SAG 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 AG/SAG milling can often be accomplished with fewer lines than in a conventional rod mill/ball mill circuit
SAG mills are essentially autogenous mills but utilize grinding balls in addition to large rocks to aid in grinding A SAG mill is generally used as a primary or first stage grinding solution SAG mills are used at gold copper and platinum mines with applications also in
The operating principle of the ball mill consists of following steps In a continuously operating ball mill feed material fed through the central hole one of the caps into the drum and moves therealong being exposed by grinding media The material grinding occurs during impact falling grinding balls and abrasion the particles between the balls
Figure 6 High Fidelity Simulation snapshot of DEM ball and particle motion in an entire SAG mill This high fidelity full mill simulation has permitted prediction of 3D motion of balls and particles mapping of power draw impact energy dissipation and shear work done by balls and particles on the liners as a function of distance down the mill
A ball mill is a type of grinding mill purposed similarly to the sag mill or other mining and mechanical alloy processing are often the primary goals of ball mill Chat Online Team Industrial Services | Mechanical and Inspection Solutions for
445 PAPER 28 Evolution of SAG Mill Process Control at the Xstrata Nickel Raglan Operation Erik Bartsch1 Chief Engineer Guy Comeau2 Senior Metallurgist Colin Hardie3 Former Chief Metallurgist 1 Process Control Group Xstrata Process Support 6 Edison Rd Falconbridge Ontario
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