Sand quarries are subject to the severe problem of dust clouds being produced by various items of equipment. NEU-JKF supplies filler extraction columns
Before dusting, it is necessary first to cover all the sources emitting dust to prevent the spread of dust in the environment. The cowling consists of confining an area with the best possible tightness to minimize the volumes to be sucked. Clever solutions, surface closures, moving or flexible elements...
The fillers are the finest granulometries that pollute the quality of gravel. But once sorted, they can become an additive in building materials, especially hydraulic concretes.
The solution ?: The filler extraction column
The filler extraction column allows, with an entry of 20 to 70 t / h of sand 0/2 or 0/4 containing 15 to 20% of fillers, to obtain a gain of 5 to 8% of fillers out.
Filler extraction from sand in quarries, provided by NEU-JKF
Processing of sand after its extraction produces pollution up until the time that it is shipped. Sand dust contains crystalline silica so it is essential to install an industrial dust extractor and dust filter to protect operatives and therefore minimise the risk of occupation health issues.
The mineral industry is also seeking to eliminate sand fillers to improve quality. Indeed, the filler content in concrete alters its quality.
Whether for crushing sand or for extracting sand from the riverbed, filler extraction is a process step in wide use in quarries
The filler extraction column connects to two aggregate conveyors.
The operating principle of the column consists in the vacuum extraction of fillers going against the flow of the material gravity feed. To collect the fillers, the supply of sand entering the column is distributed by being dropped into stone hoppers. It has an air flow passing through it that is generated by a NEU-JKF centrifugal fan of the TURBOLINE type.
This air flow penetrates the column via multiple flaps. An industrial dust extractor filters the air
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