EF1 Dry Grinding for the same range of work, dry grinding requires 1.3 times as much power as wet grinding. EF2 Open Circuit Grinding when grinding in open circuit ball mills, the amount of extra power required, compared to closed circuit ball milling, is a function of the degree of control required on the product produced. The inefficiency factors for open circuit

Morecalculation of rod mill grinding capacity. Jan,it was, therefore, ground in a wet rod mill m m using steel rods of m in length the total mass of the rod charge was t the test work index was kwht during steadystate grinding the mill consumed kwt of rods calculate the percent mill volume occupied by the charge during wet open circuit grinding,

Morecalculation of rod mill grinding capacity price Ethiopia . Capacity Calculation For Rod Mill/Continuous Mining Rod Mill grinding medium for grinding rods, it is generally believed grinding rods should not be more than 7 meters in length, wound caused by the long grinding bar is easy, therefore, used in the rod mill, the length is not too long, grinding rod diameter of 75 ~ 150 mm Grinding rod

MoreMetallurgical ContentRod Mill Capacity and Sizing TableROD MILL SPECIFICATIONSROD MILL CAPACITIESROD MILL General Arrangement-DimensionsPERIPHERAL DISCHARGE ROD MILLSWet Grinding ROD MILLINGDry ROD MILL GrindingCENTER PERIPHERAL DISCHARGE ROD MILL Rod Mill Working Principle & ComponentsRod Mill Grinding The Steel Head Rod Mill (sometimes call a bar mill

MoreBall Mill Design/Power Calculation. 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

MoreRod Mill Design Calculations EF1 Dry Grinding for the same range of work, dry grinding requires 13 times as much power as wet grinding EF2 Open Circuit Grinding when grinding in open circuit ball mills, the amount of extra power required, compared to closed circuit ball milling, is a function of the degree of control required on the product produced The inefficiency factors

MoreUnder given load and particle size requirement, capacity is a function of mill length and diameter: Q = kLD 2+N. N is related to mill diameter which decreases with larger diameters k a constant equal to Ï€ /4. A chart showing rod mill capacity vs. mill diameter [image: (135-8-5)] A chart showing rod mill capacity vs. mill

MoreJan 01, 2016· It was, therefore, ground in a wet rod mill 2.85 m × 4.27 m using steel rods of 4.11 m in length. The total mass of the rod charge was 63.8 t. The test work index was 13.2 kWh/t. During steady-state grinding the mill consumed 6.41 kW/t of rods. Calculate 1. the percent mill volume occupied by the charge during wet open circuit grinding, 2.

MoreThe mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a rod mill, ball mill or pebble mill. AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill.

MorePlease find below two calculators for sizing mills using the Bond and Rowland methods: Ball mill sizing: Calculator for ball mill(s) in a single stage circuit. Rod ball mill sizing: Calculator for rod mill(s) as first stage of the circuit and ball mill(s) as second stage of the circuit.

MoreBall Mill Design/Power Calculation. 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

MoreFigure 8.2 Media motion in the tumbling mill. 8.1 Grinding 8.1.1 Grinding action Industrial grinding machines used in the mineral processing industries are mostly of the tumbling mill type. These mills exist in a variety of types rod, ball, pebble autogenous and semi-autogenous. The grinding action is induced by relative motion between the

MoreRod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6.

MoreDec 12, 2016· Ball Mill Power Calculation Example A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size

MoreJan 01, 2016· The total mass of the rod charge was 63.8 t. The test work index was 13.2 kWh/t. During steady-state grinding the mill consumed 6.41 kW/t of rods. Calculate 1. the percent mill volume occupied by the charge during wet open circuit grinding, 2. optimum operating speed (rpm) of the mill, 3. mill capacity (t/h).

MoreRod Mill Capacity For Coal Slurry Calculation. Rod mill capacity for coal slurry calculation Mineral Processing Lab Assignments Mill Grinding Filtration The ball mill is a key piece of equipment for grinding crushed materials and it is widely used in Typical capacities for spirals run from 35 tons per hour for coal Slurry is pumped to the top

MoreBall Mill Design/Power Calculation 911 Metallurgist. Apr 8, 2018 The basic parameters used in ball mill design (power calculations), rod Ball Mill Grinding Capacity Calculator · Ball Mill Motor/Power Sizing Get Price; Mill Throughput Capacity. CFFine = If the product size P80 is less than 75 µm, the fineness of ball mill

MoreThe Rod Mill Work Index (RWI) is used for particle size determination in a size range from 25 mm down to 2.1 mm whereas Ball Mill Work Index (BWI) is used for the range from 2.1 mm down to 100 µm. Adjustment of grinding parameters: The operation display permits convenient selection and storage of parameters such as rotation counter, rotation

MoreDesigns 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.

MoreRod Mill Design Calculation hotelcelano.it. Mill type overviewhree types of mill design are commonhe overflow discharge mill is best suited for fine grinding to 75 106 micronshe diaphram or grate discharge mill keeps coarse particles within the mill for additional grinding and typically used for grinds to 150 250 micronshe center-periphery discharge mill has feed reporting from both ends and

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