PC ROM Bin Fogging System PDF Print E-mail

PC ROM Bin Fogging System detail

The success of the T&T Primary Crusher Brume-BarrageTM 'Red Jacket' Run of Mine Ore Dump Pocket Dust Quelling System is due to much more than it being just a wet suppression system.

The suppression process starts by a number of blowers establishing control over rogue air currents* and eddies as occur within large open dump hoppers. When ore is delivered to the hopper the strategically located LP air blowers establish a dominant air pattern over the full open area of the bin and within the bin. A moment before ore is dumped into the bin turbulent fog is introduced into this dominant air pattern in order to saturate the air mass within the bin. As the ROM ore free falls into the bin the airborne ore mass progressively opens and as it is enveloped by the active mass of 'BrumeTM' within the bin with the airborne moisture being ingested at the rate of aeration. This momentary gravitational expansion of the free falling ore mass and simultaneous ingestion of the airborne 'BrumeTM' is then followed by the falling ore impacting on the bin surrounds, feeder or crusher below.  This results in a violent implosion event and expulsion of the entrained ingested 'BrumeTM'.

A consequence of this high velocity expulsion of air is that during its venting the the finer airborne dust fractions and the more coarse fog aerosols simultaneously interact and agglomerate. This scrubbing interaction between the airborne aerosols and solid dust particulates all occurs internally within the mass of imploding ore culminating in very effective agglomeration and extinction of the wetted airborne dust.  That small portion of entrained dust as escapes the final implosion event is agglomerated 'on the fly' by the residual enveloping brume mass as blankets the hopper and moving in concert with prevailing air currents* as may be present.

As the system creates a dominant air (and 'BrumeTM') pattern over the hopper inevitable momentary rogue air displacements are immediately swamped with the airborne aerosols and solid particulates rapidly agglomerating 'on the fly' within the migrating plume and generally with the majority precipitating within the confines of the hopper and adjacent Brume wetted surfaces.

The T&T In-Process© fog and Brume-BarrageTM systems do not use compressed air nor high-pressure water so are eminently suited to all Truck & FEL dump locations. All that is required is a water supply with a relatively small positive head. There are no small orifices to clog in the water supply and the system is quite suitable for installation where freezing of the water supply lines and nozzles occurs. For such applications where the ambient temperature is below zero the Brume-BarrageTM system is uniquely configured to eliminate nozzle freezing and thus provides ongoing reliability of nozzle function and system automation.

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*ROM dump hopper dust suppression is fully dependent on the velocity of prevailing air currents.  Wind velocity retardation measures are the primary contributor to successful implementation of any dust suppression system however it is recognised that encapsulation is not viable in all instances.  It is in such open installations that the Brume-BarrageTM system with its focussed DEM Barrage is without equal.  


03 2018

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