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Automatic control system in grinding, wet mill, usually measured

DATE:2018-9-30 10:17:26 HITS:
Automatic Control System in Grinding The main parameters of the wet mill are usually measured or controlled:
     (1) Power. It is related to the rotation rate of the wet mill, the concentration of the slurry, the filling rate of the grinding medium, and the state of the lining. The load change of the wet mill can be reflected by the power signal or the axial pressure signal.
     (2) Sound. The intensity of the sound is related to the state of motion of the medium and the ratio of the ball to the ball, which can indicate the load of the mill. Some extraneous sounds need to be filtered out during the measurement.
     (3) New ore supply. A sensor (electronic scale or nuclear scale) is placed on the ore belt to transfer and record the load quality and to control the grinding machine to add water.
     (4) The level of the slurry pump tank of the hydrocyclone. The level of the liquid level can indicate the circulating load of the closed circuit grinding and is used to control the flow rate of the sand pump. The liquid level can be measured by ultrasonic waves, atomic absorption, pressure difference, and pressure of a bubble tube immersed in the slurry.
     (5) Slurry flow beam. It can be measured with a slurry flow meter. The mass flow rate of the slurry is measured by the calculation of the slurry capacity and the volume flow rate, and is used to control the amount of flotation agent added and calculate the mass balance table of the grinding system. The volume flow rate was measured with a magnetic flow meter.
      (6) pH value. Measured with a standard wet mill motor, the pH of the slurry affects the formation of colloidal particles by the metal hydroxide, which in turn affects the slurry concentration and classification.
      (7) Water supply. Affect the grinding concentration and grinding efficiency.
      (8) Concentration of pulp. Determined with a densitometer.
      (9) Grinding product particle size. Determined by a particle size sensor.
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