The rod mill and two ball mills are approximately the same size for simplified maintenance Porphyry copper ores usually medium to medium hard require grinding to about 65mesh to economically liberate the copper minerals from the gangue
Rod mills accept feed up to about 50 mm 2 in and produce a product in the size range of 3000 to 270 mm –4 to –35 mesh Grinding action is by line contact between the rods extending the length of the mill Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers
Designs extend to 15 feet x 22 feet 21 feet effective Though mill length is limited by manufacturing constraints for the grinding rods our Rod Mills are available in diameters from 5 feet up to 15 feet Designs extend to 15 feet in diameter by 21 effective feet in length
throughput from 12 to 16 Mtpa and maintain copper production with increasing ore hardness and lower grade throughout the life of the operation At the same time the mills will produce a finer grind to provide
Copper Ore Rod Millmill Grinding Jul 07 2017· high speed copper copper ore ball mill rod for Copper Ore Vibratory Grinding High Com Mills Copper Ore Vibratory Grinding High Com Mine Mill Operations Plan Minto Mine is a high grade copper and gold mine that is located 240 km underground ore
F 80 is the mill circuit feed size in micrometers Rod mill A rotating drum causes friction and attrition between steel rods and ore particles citation needed But note that the term rod mill is also used as a synonym for a slitting mill which makes rods of iron or other metal Rod mills are less common than ball mills for grinding minerals
As such when the product is sticky rod mills are preferred over ball mills Rod mills have an industrial yield that is less than that of a ball mill which explains the fact that balls have a much larger grinding surface than rods The power needed to operate a rod mill could exceed 30 of the power used in a ball mill
Outotec MH Series Grinding Mills offer a cost effective and easy to operate and maintain grinding solution across the mill lifecycle The MH Series includes a range of SAG ball and rod mills in standardized sizes with a capacity of up to 31 MW installed power and is based on over 100 years of experience with grinding technologies
Based on the traditional technology in China GMBZ Series high efficiency and energy saving Rod Mill is the new type of product with optimized and developed design Instead of the traditional bearing support it adopts the advanced rolling bearing support which decreases the running resistance reduces the energy consumption by1020 and
1 Over the past 15 years minetomill studies have focused attention on the impact blast fragmentation has on concentrator throughput Blasting provides the first opportunity for comminution – or size reduction It is also a cheaper and more efficient process compared to both crushing and grinding
CIL feed samples were collected from the Telfer processing plant at an average laboratory rod mill or a pilot scale IsaMill was used in this study to regrind the CIL feed to the desired product size before laboratory flotation When the rod mill was used 1 kg of slurry was collected from the processing plant and filtered to remove excess water
Copper ore in concentrations ranging from 029 percent to ten times that amount is mined from open pit or underground mines The crushed mine ore is ground in rod and ball mills and then sent to flotation machines where the copper mineral rises to the top in a froth making a copper concentrate of approximately 30 percent 27 percent iron and 33 percent sulfur
copper ore grinding mill operation copper ore grinding mill operation lundin lents for a hypothetical copper operation hauling of ore to the mill approximately Mill grinding Wikipedia Autogenous or autogenic mills are socalled due to the selfgrinding of the ore It is similar in operation to a SAG mill as Like ball mills grinding
Outotec MH Series Grinding Mills offer a cost effective and easy to operate and maintain grinding solution across the mill lifecycle The MH Series includes a range of SAG ball and rod mills in standardized sizes with a capacity of up to 31 MW installed power and is based on over 100 years of experience with grinding technologies
Question Introduction To Minerals Processing Question 1 Ore Preparation Crushing 20 Marks This Question Deals With The Major Aspects Of The Specification Of An Ore Crushing Plant Your Company Has Discovered A Major Deposit Of Copper Ore In The Mid North Of South Australia And Is Planning To Build A Plant To Produce Concentrate For Export
In 2012 Kevitsa a First Quantum FQM coppernickelplatinum mine in Finland began production with throughputs of about 5 Mty The original scope included a grinding circuit consisting of two AG mills and a secondary pebble mill with successive copper and nickel flotation to
throughput from 12 to 16 Mtpa and maintain copper production with increasing ore hardness and lower grade throughout the life of the operation At the same time the mills will produce a finer grind to provide
Based on the traditional technology in China GMBZ Series high efficiency and energy saving Rod Mill is the new type of product with optimized and developed design Instead of the traditional bearing support it adopts the advanced rolling bearing support which decreases the running resistance reduces the energy consumption by1020 and
Swiss Tower Mills Minerals AG develops fine and ultrafine grinding mill products using an innovative technology A range of services is available from consulting conceptual and detail engineering to production site assembly and lifecycle service support
Rod mills accept feed up to about 50 mm 2 in and produce a product in the size range of 3000 to 270 mm 4 to 35 mesh Rod mill is widely applied in metal and nonmetal mine water conservancy glass and construction materials industries mainly suitable for grinding various ores
Outotec Grinding Mills Optimize grinding mill performance efficiency and availability to ensure you meet your plants operational targets Outotec highperformance grinding mills use advanced simulation tools for the best possible process efficiency mechanical reliability and maintainability
The majority of highpressure grinding rolls used in the minerals industry are made by ThyssenKrupp Industrial Solutions The POLYCOM operates convincingly all around the world comminuting copper ore gold ore iron ore diamond ore platinum ore coal granulated blast furnace slag limestone cement clinker and other mineral raw materials
Solids Concentration Example The underflow stream from the classifying cyclone bank contains 100 tonshour of ore which represents 45 of the total slurry mass The downstream concentrators require a feed solids concentration of 30 by weight
Copper ore in concentrations ranging from 029 percent to ten times that amount is mined from open pit or underground mines The crushed mine ore is ground in rod and ball mills and then sent to flotation machines where the copper mineral rises to the top in a froth making a copper concentrate of approximately 30 percent 27 percent iron and 33 percent sulfur
Copper Mining and Processing Processing of Copper Ores Copper processing is a complicated process that begins with mining of the ore less than 1 copper and ends with sheets of 9999 pure copper called cathodes which will ultimately be made into products for everyday use
energy required which in this case was to grind the ore represented by the samples from a feed size F80 of 152 mm to 80 passing 17 mm and a simple adjustment procedure in case the SAG product size needed to be adjusted Bond rod and ball mill work indices are readily converted to pinion energy for rod and ball mills but not for SAG mills
Screen Brushy Creek Crushing Circuit Rod Mill Ore from Underground Reclaim Ore Secondary Crusher Fines Chute Vibratory Feeder Oversize Ore Through Crusher Fine Ore minus 58” Fine Ore minus 58” To Rod Mill Grinding Brushy Creek Grinding Circuit Rod Mill Ball Mill Cyclone Feed Sump 4 Cyclones Cyclone Feed Pump Water Discharge Water
Analysis of process of grinding efficiency in ball and rod mills with various feed parameters The research was carried out for grinding copper ore processed in OZWR KGHM PM SA The aim of
282 per cent the grinding circuit consists of a 16 × 25 ball mill in closed circuit with a cyclone pack and a flash flotation the samples are ground at 62 63 per cent of solids the feed of the flotation circuit
rod mill work indexes was much more significant and indicated that some of the primary ore and a greater amount of the supergene ore is tested and verified in a copper grinding circuit
Rod mills accept feed up to about 50 mm 2 in and produce a product in the size range of 3000 to 270 mm 4 to 35 mesh Rod mill is widely applied in metal and nonmetal mine water conservancy glass and construction materials industries mainly suitable for grinding various ores
Oct 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
Copper extraction refers to the methods used to obtain copper from its conversion of copper consists of a series of physical and electrochemical processes Methods have evolved and vary with country depending on the ore source local environmental regulations and other factors
Bond Rod Mill Index Test BRMWI A Bond Rod Mill Index Test BRMWI is a standard test for determining the Rod Mill Work Index of a sample of ore The BRMWI is a measure of the resistance of the material to crushing and grinding It can be used to determine the grinding power required for a given throughput of material under rod mill grinding
Copper mills often cold draw wire and rod because doing so improves strength and electrical conductivity Foundries cast parts from scrap copper and ingots Brass mills use numerous processes including hot and cold rolling drawing forging and extrusion to create copper and copper
CopperMolybdenum Ore The figure above is a simplified flow sheet showing the basic steps involved in a copper mill producing the byproduct molybdenum The crushed copper ore containing for example 075 Cu and 0015 Mo is fed to the grinding circuit where water is added and the ore is
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