size of ball mill vs power

Ball Mill Motor PowerDrawSizingand Design Formula. The following equation is used to determine thepowerthat wet grinding overflowball millsshould draw. Formillslarger than 3.3 meters (10 feet) diameter inside liners, the topsizeof theballsused affects thepowerdrawn by themill. This is called theball sizefactor S.

Ball-Rod Mills, based on 4″ liners and capacity varying as 2.6 power of mill diameter, on the 5′ size give20 percent increased capacity; on the4′ size,25 percent; and on the3′ size,28 per cent.

Calculation of top size grinding media (Fred C. Bond) Calculation of top size grinding media AZZARONI’s Formula. If you calculate from Figure 5 assuming you want/target a P90 of 60 microns you get around22 mm(<1 inch) as a ball size. This is quite the difference….

Thepowercalculated on using equation 1, (Bond, 1961; Rowland and Kjos, 1978), relates to: 1) Rod milling – a rod mill with a diameter of2.44 meters, inside new liners, grinding wet in open circuit. 2)Ball milling– a ball mill with a diameter of2.44 meters, inside new liners, grinding wet in open circuit.

From the volume, theball milldivide into industrialball milland laboratory use the smallball mill, sample grinding test. In addition, thesemillsalso play an important role in cold welding, alloy production, and thermalpowerplantpowerproduction. SAGmill vs Ball millCrushing ratio

Very large tonnages can be ground with these ball mills because they are very effective material handling devices. Ball mills are rated by power rather than capacity. Today, the largest ball mill in operation is8.53 m diameter and 13.41m long with a corresponding motor power of22 MW(Toromocho, private communications).

Ball mills are rated by power rather than capacity. Today, the largest ball mill in operation is8.53 m diameterand13.41m long with a corresponding motor power of22 MW(Toromocho, private communications).

From the volume, theball milldivide into industrialball milland laboratory use the smallball mill, sample grinding test. In addition, thesemillsalso play an important role in cold welding, alloy production, and thermalpowerplantpowerproduction. SAGmill vs Ball millCrushing ratio

where d b.max is the maximumsizeof feed (mm); σ is compression strength (MPa); E is modulus of elasticity (MPa); ρb is density of material of balls (kg/m 3); D is inner diameter of themillbody (m).. Generally, a maximum allowedball sizeis situated in the range from D /18 to D/24.. The degree of filling themillwith balls also influences productivity of themilland milling efficiency.

3.5.2.2Ball Mills. Theball millaccepts the SAG or AGmillproduct.Ball millsgive a controlled final grind and produce flotation feed of a uniformsize.Ball millstumble 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.

Under given load and particlesizerequirement, capacity is a function ofmilllength and diameter: Q = kLD 2+N. N is related tomilldiameter which decreases with larger diameters k a constant equal to π /4. A chart showing rodmillcapacityvs.milldiameter [image: (135-8-5)] A chart showing rodmillcapacityvs.mill…

Themillproduct can either be finishedsizeready for processing, or an intermediatesizeready for final grinding in a rodmill,ball millor pebblemill. AG/SAGmillscan accomplish the samesizereduction work as two or three stages of crushing and screening, a rodmill, and some or all of the work of aball mill.

Impact and attritionsize-reduction methods include air classifyingmills, pinmills, hammermillsand jetmills. Shear, impact and compression methods are used in media orball mills. The five types of milling technologies discussed in this article cover more than 90 percent ofsize-reduction applications in major chemical, food ...

1 Calculationof ball millcapacity. The production capacity of theball millis determined by the amount of material required to be ground, and it must have a certain margin when designing and selecting. There are many factors affecting the production capacity of theball mill, in addition to the nature of the material (grainsize, hardness, density, temperature and humidity), the degree of ...

Dec 12, 2016· Theball millmotorpowerrequirement calculated above as 1400 HP is thepowerthat must be applied at themilldrive in order to grind the tonnage of feed from onesizedistribution. The ...

Metsohas experience of over 8,000 grindingmillsglobally, including manufacturing and delivering the largest SAG/AGmillsin the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of yourmill.

More balls with smallsizeresults in fine powder. As a thumb rule powder to be milled should be taken as 25% of totalballweight. If the quantity of charge is very less then milling balls will ...

The product, by being impacted in between 2 beads, in between a bead and the wall, or by hitting the wall has itssizereduced.Millswithsize reductionmedia:Ball mills(wet)Ball mills, as described above, are also a machine of choice for milling solids in wet phase.