Ball MillSlicer – Ball Mill Fill Level Measurement

The Ball MillSlicer utilises the latest in digital signal processing techniques available to provide an accurate view of the change in mill fill level (vectors).

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Features

  • High-frequency indication of the mill fill level vectors that can be used to improve mill operation.
  • Zero crosstalk from adjacent (nearby) mills.
  • All digital system, no component drift, not affected by temperature, dust or dirt unlike typical microphone systems.
  • 4–20mA output.
  • 3x resolution when compared to microphone-based systems.
  • Fast and easy installation that typically can be performed in less than two hours.
  • A quick calibration procedure that can be performed in less than five minutes per sensor when the mill is operating under normal conditions – i.e. the mill is filled to a level that is used in normal ‘day-to-day’ production.
  • Signal sensitivity changes can be made very quickly without re-calibrating the unit.
Ball MillSlicer

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The Ball MillSlicer system is made up of one wireless shell sensor and two wired inlet/outlet sensors. The signals may be used in an automated control loop or for improving manual control.

The vibration sensors are magnetically mounted to the metal bearing structure and to the mill shell. One vibration sensor cable is 10m (~30 ft.) long and the other is 30m (~100 ft.) long. All cables are shielded. 

The main unit requires AC power (100–220 VAC, 50/60 Hz) and has a 4-20mA output that corresponds to each of the fill vectors for each of the sensors (shell, inlet and outlet).

Benefits of Ball MillSlicer

Improve milling efficiency with the following benefits:

  • Optimised milling throughput – Controlling the mill fill level rather than bearing pressure increases milling capacity
  • Increase mill efficiency – Improve mill power utilisation by grinding optimally
  • Reduce opex – Reduce ball consumption/ton milled and reduce liner wear by operating the mill at an optimal fill level
  • Seamless integration – Compatible with the existing Ball MillSlicer system, ensuring a seamless transition and maximising the value of the overall solution
  • Expert support – Support and technical assistance to assist in the implementation and utilisation of the Ball Miscan
  • Long-term value – Investment in the Ball Miscan offers additional data and insights for ongoing mill optimisation and continuous improvement.

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