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In mining industry, we ususally use mining ball mill for grinding the ores, like cooper ore, gold ore, lead and zinc ore, antimony ore, silver ore, iron ore, bauxite, lithium oreraphite, flourite ore, etc.. the crushed ores will be feeding into the ball mills. ball mills will grind the crushed ores to be powder in proper size.
Ball mill. the ball mill is the fine grinding machine connect the sag or ag mill and flotation machine. ball mills produce fine particles withniform size for flotation, its grinding medias commonly are steel ball. the ball mill rolls grinding media together with the ore, as the ore grinds, these balls initially 510 cm in diameter but.
A sag mill is usuallyrimary or first stage grinder. sag mills useall charge ofo 21. the largest sag mill is 42 12.8m in diameter, powered by8 mw 38,000 hp motor. sag mill with4 13.4m diameter andower of.
Sag mill can be applied as the first stage grinding equipment. it can effectively avoid the occurrence of sliming phenomenon, and avoid further grinding of fine particles. it can playood role in controlling granularity and energy saving. infrastructure investment and equipment cost is lower than common process the unit grinding cost of ore.
Expert process knowhow, advanced equipment design and complete service. we provide comprehensive solutions that increase throughput, improve safety, contribute to sustainability and much more. highperformance sag and ball mill liners for all minerals processing applications. built to last longer and occupy less volume within your mill.
Ball mill when the particle size of the product is less than 0.5mm, the grinding effect of the ball mill is greater than that ofod mill of the same specification. sag mill the sag mill haside range of feeding particle sizes and can process larger minerals, but at the same time, its output particle size is relatively larger.
Mill drive arrangement. mill drives are generally located on the outside of the mill to facilitate maintenance. mill discharge arrangement. if the sag and ball mills feed separate pump systems this is not an issue. if the two stages feed the same pump system, the sag mill usually drives the discharge arrangement.
Metso outotec has designed, manufactured and installed over 8,000 ball and pebble mills all over the world foride range of applications. some of those applications are grate discharge, peripheral discharge, dry grinding, special length to diameter ratio, high temperature milling oprations and more.
Difference between sag mill and ball millifference between sag mill vs ball millsag 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 ofag mill is abouto 20 .this process takes place inside the large rotating drum.
Following crushing throughaw crusher 3, the ore is fed into the semi autogenous grinding sag milllong with water and steel balls. the grinding process reduces the rock tolurry. the sag mill isarge revolving cylinder. rock is ground by the turning action of the mill, and impact from the hardened steel balls and the rock itself.
Control, process data amp preventive maintenance. dcs or scada systems control many sag, rod, and ball mills. these systems are diverse and individualized depending on the equipment and the scope of the system installed. sometimes youll see simple metrics, like run status, and other times youll see more specific metrics like flowrate or rpms.
At hg casting, we engineer innovative designs, tailored especially for every customer. our sag semiautogenous grinding mill liner and ag autogenous grinding mill liner are manufactured to the highest industry standard for autogenous grindingag, semiautogenous grindingsag, primary secondary and regrind rod or ball mills. mgs casting mill lining system designed.
Polycorp polykombo liners arene piece liner with steel lifters and rubber plates designed for use in sag, ag or ball mill applications. rubber mill liners are chosen for most primary, secondary and tertiary ball mills. in many cases rubber components are best suited for specific areas in ag and sag mills.
Working of ball mill and sag mill srm mining machines how doesag mill work crusher mills, cone crusher, jaw bond ball mill work index, kwht sag brainwave control solutions for sag mills. brainwave sag mill isnique control package using patented modelbased predictive adaptive control technology.
In total 76 data sets were generated covering the power draws of ball, sag and ag mills in the range900 kw. all three models were found to predict the power draw of the mills in the data.
Sag mill process control classically maintains the sag mill volumetric filling withinet operating range. typicallyag mill weight measurement, by either bearing pressure transducers or load cells, is used as an inferred measurement of volumetric filling. to maintain volumetric filling withinet operating range the sag weight setpoint use for process control.
Control of semiautogenous grindingsag mill weight is an example of an important process that exhibits many of these aspects. maintaining the sag mill weight at the optimum value is critical for achieving maximum grind rate efficiency and mill production powell, m.s., van der westhuizen, a.p., amp mainza, a.n. 2009.
The grinding circuit for the copper mountain project consists of one flsmidth sag mill and two flsmidth ball mills. figureverview grinding circuit the copper mountain sag mill is 10363 mm 34 feet in diameter and 6096 mm 20 feet long. it israte discharge mill with an inside diameter of 10363 mm 34 feet andrinding length of 5334.
In general, the sag mill manufacturers will control the addition amount of medium such as steel ball at 28, so that the capacity of semi sag mill to process materials can be increased by 1030. the sag mill liners wear will increase by 15 due to the impact of medium such as steel ball during the sag mill operation.
Ball mill grinding circuit the ball mill is in closed circuit withump and three cyclone classifiers. the ore and trim water are added to the ball mill and the outflow from the ball mill goes toump where additional water is added. the slurry from the ball mill is pumped out ofump into two cyclone separators. the underflow from the cyclone is returned to the ball mill.
Agsag mill liners. we have supplied rubber pulp lifters for sag mills up to 40 ft in diameter. we are pioneers in the design of both radial and curved pulp lifters, also design and manufacture rubber polystl grates and discharge systems. mining.
Magosense offers you many advantages maximize mill troughput. magosense helps control the mill fill level to avoid mill overloading and allowing better control of mill grindouts. minimize liner damage amp wear. magosense helps reducing the occurrence of ball impacts on liners, thereby extending liner and media lifetime. improve mill efficiency.
3. the sag mill feed rate tph 4. the sag mill weight tonnes figure 10. the performance of trainag mill before the new manta cube. it can be seen from this set of operational data that the mill weight varies overide range and this is.
Improved mill control at lihir gold mine in papua new guinea improved mill control at lihir gold mine in papua new guinea due to changes in sag mill charge density rockball ratio and the wearing of mill liners. vancouver, bc, canada isold and copper mining company. ball mills shown here reduces the mined material down.
The plant processes gold ores fromide variety of sources at rates between 85 and 125 tonshour throughwo stage sagball mill grinding circuit. all the plant information monitoring and control is carried out throughicromax process management centre pmc.
This would be achieved by connecting the expert system to the highest level of control ie provide the set points for the controllers elber, 1989. over the last year or so further help packages have been implemented. these area helpsag designer used by morgardshammar,eading swedish mill manufacturer, for optimizing sagball mill circuits.
At the lihir gold mine, the plant was utilizing mills bearing pressure to calculate load measurement for the sag mill in hgo1. the use of sag mill weight for process control is additionally complicated at lihir by compromised and suddenly drifting load cell and bearing pressure measurements on two of the process plants three sag mills.
This paper describes advances in the operation and control of new sag mill installations in australia. newcrest mining telfer operation sag mill operator.
Sag and mill controls. sag mill product feeds two parallel ball mills of 6611nternal diameter length each with7 mw twin pinion drive the ball mills are operated atall charge volume of 3032 and 785 critical speed the sag mill trommel undersize is combined with the ball mills discharge and pumped to two parallel packs clusters of.
Agsag mills can accomplish the same size reduction work as two or three stages of crushing and screening,od mill, and some or all of the work ofall mill. because of the range of mill sizes available, agsag milling can often be accomplished with fewer lines than inonventional rod millball mill circuit.iagram of types of agsag.