ball mill size with motor power

Laboratory mill, Laboratory grinding mill

roller mill. horizontal waste laboratory. Rotational speed: 348, 360, 428, 270 rpm. Motor power: 1 kW. Machine length: 610, 660, 762, 927, 1,676 mm. ... non-stainless steel external surfaces coated with a white two-part …

Energy Efficiency Analysis of Copper Ore Ball Mill Drive …

3. Analysis of Variant Ball Mill Drive Systems. The basic element of a ball mill is the drum, in which the milling process takes place ( Figure 1 ). The length of the drum in the analyzed mill (without the lining) is 3.6 m, and the internal diameter is 3.4 m. The mass of the drum without the grinding media is 84 Mg.

Gearless mill drives

Larger ball and SAG mills, with higher installed power ratings relative to the mill diameter, offer higher efficiency and throughput, round-the-clock reliability and the opportunity to mine in remote areas. This makes low ore grades economical to grind. ABB has delivered some of the world's largest GMDs: • 22 MW GMD for 28' ball mill

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) * d^0.5 where D m = the diameter of the single-sized balls in mm.d = the diameter of the largest chunks of ore in the mill feed in mm. dk = the P90 or fineness of the finished product in microns (um)with this the finished product is ...

BALL MILL DRIVE MOTOR CHOICES

The following five drives systems are to be studied: Drive 1 - A 5000 HP, 1200 rpm wound rotor motor with liquid rheostat and power factor correction capacitors to a dual pinion …

Operating work index is not the specific energy consumption …

Alexis Yovanovic. Indeed. Specific energy consumption (W, kWh/t) refers to the simple quotient of the "net" power applied by the mill (kW) divided by the feed rate (t/h). A mill can have a ...

ball mill size and motor power requirements | Mobile …

The power input required to maintain this condition is theoretically: hp = (W) (C) (Sin a) (2π) (N) 33.000. where W = weight of charge. C = distance of center of gravity or charge from center of mill in feet. a = dynamic angle of repose of the charge. N = mill speed in rpm. The value of the angle a varies with the type of discharge, percent of ...

Ball Mill

Smaller built-up space in comparison with mills seated on trunnion bearings. 5. Easy operation, stable& reliable performance. 6. Oil mist lubrication device guarantees the lubrication of all gears. Rotate speed (r/min) Grinding media Weight (T) Discharge size (mm) Capacity (t/h) Φ900×1800. Φ900×3000.

Energy Efficiency Analysis of Copper Ore Ball Mill Drive …

components and cause the overloading of the power supply line [30]. 3. Analysis of Variant Ball Mill Drive Systems The basic element of a ball mill is the drum, in which the milling process takes place (Figure1). The length of the drum in the analyzed mill (without the lining) is 3.6 m, and the internal diameter is 3.4 m.

Charge behaviour and power consumption in ball …

Typical power consumption for a 5-m diameter by 7-m-long ball mill is between 2.5 and 3.5 MW. The actual proportion of this energy usefully used in size …

Ball Mill | SpringerLink

Peripheral discharge ball mill, and the products are discharged through the discharge port around the cylinder. According to the ratio of cylinder length (L) to diameter (D), the ball mill can be divided into short cylinder ball mill, L/D ≤ 1; long barrel ball mill, L/D ≥ 1–1.5 or even 2–3; and tube mill, L/D ≥ 3–5. According to the ...

SUPPLY, INSTALLATION, & COMMISSIONING OF THE WORLD'S LARGEST GRINDING MILL

With each incremental increase in mill size, notches, did not substitute undesirable "burn" the number of shops capable of manufacturing the characteristics. components diminishes dramatically. ... mill trommel. actual mill and load conditions and actual output power Cadia is considering speeding up the ball mills in an draw of the mill motor ...

A Comparison of Mills Used for Phosphate Rock Grinding

A brief introduction of 3 common mill types: Ball Mills – a horizontal rotating cylinder containing a charge of steel balls. The balls tumble as the mill turns and material caught between the balls is ground to powder. Table-Roller Mills – a horizontal table rotates with spring-loaded rollers mounted above.

Planetary Ball Mill PM 100

Download. The Planetary Ball Mill PM 100 is a powerful benchtop model with a single grinding station and an easy-to-use counterweight which compensates masses up to 8 kg. It allows for grinding up to 220 ml …

Choosing the Right Motors for your Mills

–SAG mills: 20% v/v ball charge, 30% v/v filling and 78% critical speed with worn liners ... •largest size, up to 28 MW •highest efficiency –Synchronous with pinion ... power Mill Shell Motor Output 0.97 0.96 0.96 1.0 0.985 0.97 CCV/Transformer Input …

Ball Mill Design/Power Calculation

The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The ...

How to Make a Ball Mill: 12 Steps (with Pictures)

1. Fill the container with small metal balls. Most people prefer to use steel balls, but lead balls and even marbles can be used for your grinding. Use balls with a diameter between ½" (13 mm) and ¾" (19 mm) inside the mill. The number of balls is going to be dependent on the exact size of your drum.

Pre-Processing to Increase the Capacity of SAG Mill …

As the feed size distribution commands the charge volume and thus the SAG mill power draw associated with competent ores, various industrial operations later included ... 7.0 m length (190) single SAG mill equipped with a 20 MW electric motor. The SAG mill product flows to two 3.6 m (120) by 7.3 m (240) horizontal screens ... (29 ) single ball ...

Ball mill Superior cement quality, More fl exibility, …

5 Mill motor 6 Auxiliary drive 1 3 Ball mill for cement grinding 3 Cement grinding – taking on the tough tasks ... obtain the maximum power absorption and grinding e ciency. For ... Mill Motor * Size (D x L)(m) Speed (rpm) Installed motor Power (kW) 3.8 x 13 16.86 2570 4.2 x 12.5 16.03 3130

Ball Mill Motor Power Draw Sizing and Design …

Ball Mill Motor Power Draw Sizing and Design Formula. The following equation is used to determine the power that wet grinding …

SAG Mill Grinding Circuit Design

Ball charge (fraction of volumetric loading and ball size) Mill operating conditions including mill speed (for circuits with variable-speed drives), density, and total mill load ... The original SAG mill control loop, a mill motor power draw set point of 5200 Amperes controlling the coarse ore feeder speeds, was soon found to give excessive ...

AMIT 135: Lesson 7 Ball Mills & Circuits – Mining Mill …

Mill Power Draw. The motor power draw required to turn a mill from rest to the operating speed includes the energy required for the initial starting torque and mechanical arrangements to rotate the mill. It is generally …

CALCULATION OF THE POWER DRAW OF DRY …

Ss – Ball size factor To determine the power that a dry grinding needs, full grate discharge mill Equation 1 is multiplied by the factor of 1.08. A multi-compartment ball mill consists of two or more grate discharge ball mills in series. The same equation is used to calculate the power that each ball mill compartment should draw. The total ...

Ball Mill Parameter Selection & Calculation

Critical Speed_. When the ball mill cylinder is rotated, there is no relative slip between the grinding medium and the cylinder wall, and it just starts to run in a state of rotation with the cylinder of the mill. This instantaneous speed of the mill is as follows: N0 —- mill working speed, r/min; K'b — speed ratio, %.

Model Predictive Control

SAG and ball mills are generally accepted as the largest power consumers in a mining and mineral processing operation and can be 80% of total electrical energy consumed at a specific power consumption of around 20kWh/ton. Their function is to effect size reduction of rock in order to liberate the target metal compound or compounds trapped in

How to choose a motor for a ball mill?

Here are the steps you can follow to choose a motor for a ball mill: Determine the requirements of the ball mill: The first step is to determine the size and weight of the ball mill. This ...

Ball Mill Design/Power Calculation

The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The following shows how the size or select the matching mill required to …

How much does a ball mill with an output of 30 tons per …

1.Size and Design: The physical size and design of the ball mill, including the diameter and length, affect its cost. ... 3.Motor Power: The power of the motor used to rotate the ball mill is an ...

Enhancing the capacity of large-scale ball mill through …

The power consumption method was used to simulate the motor power and processing capacity of the Φ5.49 × 8.83 m ball mill. The results are presented in Fig. 4. Presently, in the actual production of the concentrator, the filling rate of the ball mill is 28–30%, and the processing capacity is 310–320 t/h.

Energy Efficient Ball Mill Circuit – Equipment Sizing Considerations

Two steps are proposed to evaluate the ball mill size for operation in closed circuit with screens: 1. ... Reduce the mill size and installed motor power by 20%. To follow this option would ...