Level Measurement & Control


Optimised filling in vertical and horizontal mills

July 2011 Level Measurement & Control

Powitec offers a range of packages to aid indication and optimise the filling degree in vertical and horizontal mills.

PiT Indicator Mill

The Indicator system is suitable for both ball and roller mills and is designed to indicate the degree of filling in the mill. Exact analysis of filling is possible and the system is easy and inexpensive to scale for multi-mill applications. Features include:

* Calibration of measured filling degree in the control room against expected filling degree including graphical user interface with trending and alarming.

* Two microphones per mill to allow for advanced signal processing and eliminate the influences of disturbing sounds (ie, other mills).

* Calculation of filling degree by using advanced signal processing with pattern recognition on acoustic measurements.

* Automatic feature selection and extraction (significance ranking) of existing process data.

* Process interfaces for OPC server, Modbus RTU Master, Modbus TCP Client, Profibus DP Master, Analogue etc.

Pit Navigator Mill

This advanced auto-optimiser is designed to optimise the operation of mill and separator in both ball and roller mill applications. Full closed loop control is provided to reduce grinding degree deviation, increase throughput, optimise start-up, adapt to process changes and minimise energy consumption. Features include:

* Online vibration monitoring of separator allows for Blaine prediction and quality based throughput maximisation.

* Recipe independent closed loop control by using filling degree, Blaine prediction and advanced process control

* Self learning of controller parameters for different recipes.

* Fast and stable control.

* Automatic feature selection and extraction.

* Remote support.

* Integration with existing mill monitoring solutions.

For more information contact R&C Instrumentation, 086 111 4217, info@randci.co.za, www.randci.co.za



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