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Re: Ball Mill Load and feed. Dear GKS, You are correct in stating that main drive kw only increase when less grinding media charge and small size of grinding media w.r.t. feed size and feed rate. However, it was to be stated in my reply that Kwh/t of material increases in chocked condition of the mill as there is no output from the mill. Warm regards

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Re: Ball Mill Load and feed. Dear GKS, You are correct in stating that main drive kw only increase when less grinding media charge and small size of grinding media w.r.t. feed size and feed rate. However, it was to be stated in my reply that Kwh/t of material increases in chocked condition of the mill as there is no output from the mill. Warm regards

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Where N kW represented the power of ball mill pinion shaft K b kW/t was the power for per ton ball medium G t represented the weight of media loaded in the ball mill. Usually, the power of the ball mill pinion shaft was directly proportional to the motor power of the ball mill, and the correlation coefficient was 1.051.20.

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The ball mills are connected to two 500 kW 6 kV motors supplied by Tiraspol Motor Company in Moldavia. The appli ion previously used a hydraulic coupling between the motor and ball mill. But this mechanical starter demanded periodic maintenance and reliability problems meant that key staff were often diverted from other important projects.

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mode and ball mill VRM Roller press Spec.el Energy consumption mill motors kWh/t 30 25 17 17 at mill motor ball mill 100 100 83 57 57 Spec.el. Energy consumption mill system kWh/t 39 32 27 26 department ball mill 100 100 82 69 67 Figure 1. Shows a typical flowsheet for a ball mill installation.

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higher mill speed should always be considered when setting gear ratios, service factors, and motor power ratings. For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to be determined. Primary Mills: Torque Output by Motor vs Torque Demand by Mill

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The paper used the P kW E lt2000 of the ball mill, the power loading used asynchronous motor, so it is necessary for effective reactive power compensation. 2 3.1 The design of the reactive power compensation circuit Due to the starter is connected with Y , the motor has reactive power compensation as shown in Fig1 Y

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Mills usually have motors in the following range: SAG mill motor: 7,435 kW or an HPGR circuit with motors: Ball mill 1 4,015 kW and Ball mill 2 4,152 kW for a porphyry copper molybdenum mine. Comparing mill operations for both open pit mining to underground mining, where the metal is separated from rock ore containing the metal mined, both

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higher mill speed should always be considered when setting gear ratios, service factors, and motor power ratings. For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to be determined. Primary Mills: Torque Output by Motor vs Torque Demand by Mill

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The brand of the motor or reducer can be chosen by the customer freely. It is recommended that the ball mills equipped the hybrid bearings should have the hydraulic jacks to lift the cylinder easily for installation and service. The ball mill runs smoothly and reliably.

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### Energy Consumption in Mining Comminution ScienceDirect

Mills usually have motors in the following range: SAG mill motor: 7,435 kW or an HPGR circuit with motors: Ball mill 1 4,015 kW and Ball mill 2 4,152 kW for a porphyry copper molybdenum mine. Comparing mill operations for both open pit mining to underground mining, where the metal is separated from rock ore containing the metal mined, both

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in stirred mill is much more efficient than ball mills in terms of size distribution of product. The product having d8078 m was obtained by 10.53 kWh/t energy consumption after 1 minute of between energy and comminution to determine the.

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The series is a kind of largesized 3phase AC synchronous motor mainly used to drive mills in mines, including grate ball mill, rod mill and coal mill. Product Name: High Voltage Ball Mill Synchronous Motor Rated voltage: 3000V, 6000V, 10000V Capacity range: 320 kW 5000kW Rated frequency: 50Hz, 60HZ Cooling method: IC01 Quota: S1

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If the motor is started directly, without starter: The current absorbed by the motor during the start is extremely high. For example, a 110 kW motor with a nominal current of 205 A and a ratio starting current / nominal current equal to 6 absorbs 1230 A during the start.