Intalysis
Technology for Online Analysis
LFM Pilbara Moisture Analyser - for Iron Ore
The LFM Pilbara enables mine and port operators to achieve:
- Accurate rheology control through on-line measurement of ore moisture contents. This allows for precise addition of water from mine to port, assisting operators to control dust extinction while keeping moisture below maximum shipping limits
- Improved stock control and resource extension via enhanced knowledge of blend ratios.
The analyser does not contact the material monitored nor does it interfere with the routine operation of the conveyor. Once installed and calibrated the system operates continuously without the need for sampling. The standard LFM system requires an output from a belt weigher to correct for variations in belt loading.
The LFM technology is based on a microwave transmission measurement system, where microwaves are transmitted through the material from above and received below the belt. These signals are then analysed for phase change and attenuation and compared to calibration curves that were established when the LFM was installed.
Measurements are little affected by vertical segregation of the material on the belt, are independent of material particle size and belt speed and are effective with both fabric and steel cord belts.
Key Features
- Effective operation in conditions where microwave attenuation is high
- Large dynamic range for measurement of high moisture content, thick beds or highly attenuating materials
- True continuous moisture measurement
- Rugged, light-weight, low-profile microwave antennae for easy installation
- High-performance, low-frequency microwave electronics provide exceptional accuracy in demanding climatic conditions
- Inexpensive field maintenance due to easily replaceable electronic modules
- LCD interface for system diagonosis and local moisture readouts
- Direct output to plant control room with industry standard 4-20mA, MODbus, Profibus serial and Ethernet interfaces
- Diagnostics
- Radio modem communications for remote system diagnostics and operation
- Very low microwave power emitted
- Installs directly on the production conveyor belt
- Installation requires little modification of the existing structures.
The LFM Pilbara is available in two models
- LFM Pilbara 50 is the standard unit
- LFM Pilbara 50 W is the wide belt unit which has about 10% greater capacity
in terms of bed depth when fitted on conveyors where the feed width is greater
than 90cm
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