The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

Charging a Wet Mill The general operation of a grinding mill is to have the product impacted between the balls as they tumble. Unlike dry milling, wet milling is more straight forward and more forgiving in terms of charging the product. As with dry milling there should be at least 25% liquid to fill the void space plus a bit more to insure

Aug 30, 2019· 1 Calculation of ball mill capacity. The production capacity of the ball mill is 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 the ball mill, in addition to the nature of the material (grain size, hardness, density, temperature and humidity), the degree of

Wet ball mills. Ball mill is widely used in mining, smelting,road,building material and chemical. It is the key equipment for grinding after the crush process.The mill consists of feeding dev, driving assembly, rotating assembly, bearing unit,discharging assembly and foundation unit. Effective volume:0.45-87m³

Cylindrical Ball Mill is an efficient tool for grinding materials like ores, chemicals, ceramic raw materials, paints etc. into fine powder or fine paste by grinding in a wet way. The Ball Mill operates by rotating a cylinder with grinding balls like steel, CI, ceramic and pebble balls as grinding media.

BALL MILLS . Grinding of materials in a tumbling mill with the presence of metallic balls or other media dates to the late 1800's. HP (Wet) (Steel Media) HP (Dry) -1618-2. 2 16 18 40 1/2 3/4 -1723-3 3 17 23 39 3/4 1 1/2 -3846-30 30 38 46 26 10 15 -4446-40. 40 44 46 24 15 25 -4652-50 50 46 52 24 20 30 -4858-60: 60 48 58

Jan 01, 2016· The balls occupied 28% of the mill volume. The mill was rotated at 65% of the critical speed. The index of the ore was 11.3 kWh/t. Estimate the size of the mill required. 7.7. A wet overflow ball mill of dimensions 3.05 m × 3.05 m was charged with nickel ore (pentlandite) of density 4.2 having a F 80 value of 2.2 mm. The mass of balls

Feed trunnion is smaller with diameter 1.75 m (30% of internal mill diameter). 2. Discharge trunnion is larger with diameter 2.32 m (40% of internal mill diameter). 3. Slurry feed enters the mill through the feed end via a feed pipe with diameter 1.45 m (25% of the internal mill diameter 5.8 m) 4

Ball Mills Steel Ball Mills & Lined Ball Mills. Particle size reduction of materials in a ball mill with the presence of metallic balls or other media dates back to the late 1800’s. The basic construction of a ball mill is a cylindrical container with journals at its axis.

Aug 30, 2019· 1 Calculation of ball mill capacity. The production capacity of the ball mill is 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 the ball mill, in addition to the nature of the material (grain size, hardness, density, temperature and humidity), the degree of

Ball Mill Design Parameters. Size rated as diameter x length. Feed System. One hopper feed; Diameter 40 100 cm at 30 ° to 60 ° Top of feed hopper at least 1.5 meter above the center line of the mill.

The low energy condition (Low Amplitude Mills) is reserved for wet milling whereas the higher energy mode (High Amplitude Mills) can be used either wet or dry. The M-18 through M80 Series are Low Amplitude, designed for wet grinding. The DM Series of mills are high energy for wet or dry grinding.

Jan 01, 2016· The balls occupied 28% of the mill volume. The mill was rotated at 65% of the critical speed. The index of the ore was 11.3 kWh/t. Estimate the size of the mill required. 7.7. A wet overflow ball mill of dimensions 3.05 m × 3.05 m was charged with nickel ore (pentlandite) of density 4.2 having a F 80 value of 2.2 mm. The mass of balls

Cylindrical Ball Mill is an efficient tool for grinding materials like ores, chemicals, ceramic raw materials, paints etc. into fine powder or fine paste by grinding in a wet way. The Ball Mill operates by rotating a cylinder with grinding balls like steel, CI, ceramic and pebble balls as grinding media.

drawing less than 1 hp (.75 kW), to 16-18 feet diameter, drawing 2100-3900 hp (1550-2900 kW). Feed size is usually ½ inch or less; product size ranges from 500µ to below 5µ. Ball mills well on hard, brittle materials. They are not as suitable for grinding elastic, ductile or fibrous materials, or for fine grinding in general. Ball mills

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