The majority of dust in a typical quarry is created during the extraction and crushing process. Dependent on the nature of the mineral, moisture content and particle sizes - the dust is released in to the environment during subsequent conveying, screening, stacking and loading operations.
In order to prevent dust particles from getting airborne, foam is introduced in controlled measures at transfer points, immediately prior to the crushers or directly in to the crushers. This ensures that all the material is fully coated in Foam.
As the mineral / aggregate is crushed - new faces are exposed and dust particles are released. These dust particles collide with the Foam bubbles piercing them and thus releasing the moisture held therein. The result is that the dust particle becomes thoroughly wetted and its increased weight causes it to fall back on to the main body of the material. The dampened dust particles will then continue their entire journey through subsequent crushing, screening and to the final storage bins without ever getting airborne.
To achieve effective dust suppression approximately 2 litres of solution converted to Foam is required per one tonne of material. The solution is made up of up to 200 parts water to 1 part Dustrol 70 - our Foaming Agent.
Best-Chem is the European manufacturer of Dustrol 70. The product is made here in our facility in the UK. Dustrol 70 is safe to use and biodegradable. When used correctly, it does not have any adverse effects in the cement making process, ready mix applications, concrete block making nor asphalt production.