2 calculate and select ball mill ball size for optimum grinding.Based on his work this formula can be derived for ball diameter sizing and selection dm 6 log dk d05 where dm the diameter of the singlesized balls in mmd the diameter of the largest chunks of ore in the mill feed in mm.More detail mill steel charge volume calculation.
Get PriceSteel balls volume in the sag mill azzolaimpresaedile.Inside these sagball mill are big steel balls that grind ore via an impact process.In simple terms, these hard metal steel balls get to the top of the rotating chamber and fall down crushing the ore being processed.It grinds it up into a compound to make processing easier.
Material in the mill including the media which may be steel balls in a ball mill, or large lumps of ore in an autogenous mill or a mixture in a semiautogenous mill, as well as the slurry that makes up the operating charge.Let jt be the fraction of the mill volume that is occupied by the total charge, jb the fraction of the mill.
Ball size will also affect the grind p80.Efficiency is in part determined by the axb value of the ore.A small lab mill can give guidance on the influence of ore strength and ball size.Larger balls will increase p80 in ball mill, thereby reducing overgrinding.
Old ball mill balls for sale.Ball mills are among the most variable and effective tools when it comes to size reduction of hard brittle or fibrous materials the variety of grinding modes usable volumes and available grinding tool materials make ball mills the perfect match for a v.Learn more 40 years of industry experience providing one-stop.
2 the size of the ball mainly depends on the particle size of the material to be ground and the diameter and speed of the mill can be considered appropriately formula 115 is an empirical formula for spherical diameter and feed size dmax the maximum diameter of steel ball mm amax the maximum size of feeding granularity mm.