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Quarry Dust Suppression: Methods And Solutions For Proven Results

Written by Kieran Naik | May 17, 2024 9:00:00 AM

For quarries, a good dust suppression system is central to maintaining air-quality, protecting the well-being of workers, and complying with environmental and safety regulations. Depending on your risk management needs and the nature of your operation, there are various dust suppression systems with proven results in dust control. At Best-Chem, we provide a range of advanced dust suppression and management systems tailored to the needs of hard rock quarries and other mineral extraction applications.

Below, you’ll find an overview of the main quarry dust suppression strategies, to help you make an informed choice. 

Foam Systems

Foam systems use a foaming agent mixed with compressed air and water to capture dust particles within the suppression zone.

Suitable for: hard rock quarries, aggregate quarries, coal mines, gypsum quarries and cement works. 

Applications: Crushing and screening plants, bulk material handling, conveyors, hoppers, transfer points and storage areas. 

Benefits:

        • Low moisture – as foam systems use minimal water, they preserve the substrate’s properties and avoid any issues related to excess moisture. For example, water misters can reduce the quality of coal if the moisture level gets too high.

        • Ideal for controlling dust at crushes and transfer points – directly applying foam at strategic dust generation points can improve dust control throughout the plant.

        • Eco-friendly – using biodegradable foaming agents makes foam-based systems safe and sustainable in a wide range of extraction environments.

High Pressure Misting Systems

  • Misting systems: produce a fine atomised mist that contains and settles dust in localised areas.

  • Suitable for: aggregate quarries, hard rock quarries, limestone quarries, sandstone quarries, gypsum quarries, clay and shale quarries

  • Applications: conveyor systems, primary crushers, secondary crushers, screening operations, load-outs, rail loading, dump hoppers, rail unloading, storage bays

Benefits:

        • Reduces airborne dust – effectively captures inhalable dust particles, reducing dust exposure for workers and equipment, and improving air-quality in processing sites.

        • Prevents dust spread – misting sprays contain and suppress dust emissions at critical points, helping prevent dust from spreading throughout the site and beyond site boundaries.

        • Compliance support – misting systems can reduce inhalable and respirable dust to acceptable levels to meet environmental standards and safety regulations.


Rail Loading Systems

Transporting aggregates, coal, or quarried stone by rail can create a huge quantity of dust. A specialist rail wagon dust sealant system helps to improve material handling and minimise the exposure of operators and the public to harmful particles.

Suitable for: all types of quarrying and mining operations using a rail terminal or wagon transport.

Applications: open rail wagons.

Benefits:

        • Worker safety – suppressing dust at rail terminals improves safety conditions for operators, drivers, and other employees involved in material handling.

        • Containment – the dust control system effectively encapsulates the material within its wagon, preserving the product and preventing the spread of airborne particles. Alongside the safety benefit, this fulfils the statutory requirement for bulk materials in open rail wagons to be either treated or covered.

        • Remote operation – our dust control systems can be remotely operated through a system of sensors; minimising worker contact with hazardous materials.

Next steps

As dust suppression requirements vary between quarrying operations, we provide a bespoke solution tailored to the needs of your business and compliance requirements. This may include foam suppression systems, misting systems, or sprinklers, as well as training, maintenance, and after sales support. To find out more, feel free to get in touch to arrange a site survey and discover how we can support your operation.