Water injection systems used in the processing of sands, which are also deployed by comparable bulk material industries such as the ceramics industry, are often not appropriately considered. These do however play an important role.

Water nozzles

For purposes of cooling the foundry sand, water should be dispersed into a fine spray for superior action as an energy transfer medium and cooling agent. The smaller droplets, the higher the number of droplets per overall volume of water. This means that more heat energy can be dissipated for an equal volume of water. The consequence from this insight is that the water should be dispersed into a very fine spray in cooling facilities such as cooling units, cooling tracks, cooling drums etc. so as to attain the highest possible cooling effect.

This should be applied especially in the case of fluid bed heat exchangers and cooling tracks. The water should also be injected over an area as wide as possible by numerous drippless nozzles. This ensures the homogeneous distribution of water in the moulded material. Dripping nozzles cause strong bulbous formation and reduce the permeability to air of the moulded material and the air channels. This causes increased maintenance and cleaning costs.

Water injection in processing facilities via conduits

The traditional water meters on the basis of light or mechanical barriers are a common source of errors in the precision of water injection. The transmission of impulses in the rough industrial setting overall, and especially over long distances, are not always secure and may lead to errors. These errors are often very hard to detect: e.g. By calibration or using oscilloscopes or similarly technically demanding measuring devices. Modern metering units such as our model DF-1000 are a remedy to this problem. These devices are characterised by their simple handling and high precision.

Manual water injection systems

Malfunctions in sand processing may lead to significant losses of production. If devices such as the measuring and control systems fail, or malfunctions occur at the water dosage components, a simple emergency water track can be employed. There are many cost-efficient options for solving this customer-specific, but common issue.

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