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Johannesburg, Gauteng-2160, South Africa+(27)-11-7942984
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Agglomerative Dust Suppression Service

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SCUA provides effective solutions to fugitive dust emission problems. Collection systems or dust extraction offer high efficiency but can be very expensive to manufacture, operate and maintain and can only be used in conditions that allow for total enclosure. SCUA’s Agglomerative Dust Suppression systems are based on cost effective and flexible water, air-water or chemical-water technology, all with minimum effect on downstream processes. SCUA Dust Suppression systems use only quality components and are robustly designed for the taxing environment of mining. The equipment requires minimum effort and cost to operate and maintain.
Agglomerative Dust Suppression
Agglomerative Dust Suppression Technology was developed by The Royal Institute of Stockholm in the early 1970’s with the commercial availability of atomizing nozzles. These nozzles produce liquid particles within the 10-30 micron range. Usually applied at transfer points, a fine mist of droplets is sprayed into the airborne dust. These fine droplets and dust particles combine to form agglomerates. Being too heavy to remain airborne, these agglomerates settle back onto the material. In the settling process, the agglomerates also wet the bulk material slightly, thus further inhibiting the generation of fugitive dust.
Dust Suppression Types
Although water-based dust suppression is most commonly used in industry due to its low cost and ease of operation, it is not suitable for all suppression conditions. Some bulk materials are hydrophobic and repel water. In such cases, coal being a typical example of a hydrophobic material, surface active agents (surfactants) must be added to the water. These agents reduce the surface tension of the water droplets, facilitating the agglomerative process of combining dust and water particles. In other applications, of which the cement industry is a typical example, excessive water is undesirable as it causes caking of the material. In these cases a special nozzle is employed and water is combined with compressed air to create what is commonly referred to as dry fog. In this case the droplets are so fine that the fog is perceived to be dry.
System Automation
In cases where the client does not have a sophisticated PLC (requiring only connection to a solenoid valve), SCUA Dust Suppression systems can be fully automated through a control panel and then integrated into client process control systems. Most commonly a PLC contact provided by the client in conjunction with an ultrasonic material detector switch will activate and deactivate the system. When required, the SCUA control panel will allow switching over to manual operation for, amongst others, maintenance work. SCUA Dust Suppression systems also feature an integrated automatic-flushing water filter system with filter cores of 100, 200, or 500 microns. The complete system and pumps are also protected through the use of pressure regulators and bypass valves.

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