The autogenous mill itself is a coarse-grinding device, consisting of tumbling drum with a 25% to 40% volume filling of ore Metallic or manufactured grinding media is not used Autogenous mills are fed run-of-mine ore or primary crusher product that is
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Autogenous mills are available for both wet and dry grinding The diameter of autogenous mills is normally two to three times the length The ore charge is usually 25 to 35% of the mill volumeAutogenous mills have grate discharges to retain the coarse grinding media in the mill
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Aug 06, 2015· Mill length was the primary variable investigated in an autogenous pilot mill circuit The 5-½’ diameter mill had both pebble ports and ½” wide slotted grat The plus ½” mill product was crushed in a cone crusher and returned to the mill feed along with the minus ½” plus 4 or 6 mesh fraction
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Gearless mill drive (GMD) technology has further expanded the use of large AG milling allowing Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW Today, Outotec is the world leading supplier of gearless AG mills operating globally
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The efficient autogenous mill uses the crushed material in the barrel body as the grinding medium, which continuously impacts and grinding to achieve the purpose of grinding Sometimes, in order to improve the processing capacity of the autogenous mill, a small number of steel balls can be appropriately added, usually accounting for 2-3% of the .
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