MILLCOM is widely used for the efficient operation and increased production of various types of grinding machines; from small ball mills for fine ceramics to huge grinders for cement industry. Maximum grinding efficiency can be automatically maintained by installing ball mills and other mills with microphones (Electronic Ears) for the automatic control of raw material feed rates. In abnormalities, emergency interruption of raw material feeding is possible.

 

Even today, when it comes to comminution of large masses, ball mills are the work horses in the mineral industries. In the past the filling level of ball mills was to be determined by the use of specialized microphone schemes (“electronic ears“), which however showed a series of significant disadvantages (strong interference due to other aggregates in the same hall, low precision, poor reliability) All problems of these “classical“ fill level measurement methods are solved by the new “electronic ear“ produced by KIMA, which uses a different operating principle. A structure borne sound sensor is attached directly on the shell of the rotating mill. It acquires all sounds which occur in the metal wall. Noise and sounds produced by other mills or machines are completely ignored by this sensor, as it is totally insensitive to airborne sound. The signals are transmitted wireless to an industrial PC which analyzes them by means of methods of nonlinear dynamics.

 

SmartMill Control is a modern control system for grinding plants. The Fuzzy-Expert-system performs much better than the “classical“ closed loop controls (PID) or even rule based expert systems. SmartMill Control enhances efficiency and durability of grinding systems significantly. A single control block can take several inputs and outputs into account,leading to much better control results. Smooth and stable operating conditions and optimisation of throughput are primary goals of control startegies. SmartMill Control is based on highly developed software tools and building blocks. Data exchange to the process / grinding plant is performed by means of standardized industrial interfaces. Consistent and consequent usage of open system interfaces enables easy connection to all automation systems being used in todays‘ cement industry .Due to the highly modular design of SmartMill Control investment is kept low.