Wet dust collectors are common for use with aluminum, titanium and other explosive metal dusts. Sanding, grinding, and polishing metals creates fine particulates that are most safely collected in a wet collector. Typical industries/applications for wet collectors are aircraft manufacturers, milling & refining, ceramics, foundries, and makers of electrical components. Filter-1 wet collectors are in use at Boeing, American Airlines, General Electric, Lockheed Martin, Dupont Corporation and Raytheon, to name a few. Wet collectors come in three configurations: ducted, downdraft table or collection booth. All 3 of which meet NFPA standard 484 for collection of metal dust
Cartridge collectors, bag house, shaker bags or cyclones have all been applied to metal dust collection, but all present some additional risk compared to wet collectors. Using these types of dust collectors also requires additional accessories like explosion vents, abort gates or grounded filters. These accessories add to the overall cost of the unit as well as additional maintenance requirements.
Choosing ducted, downdraft or booths for your wet collector is primarily based upon how your operators perform their processes. If they are working on stationary grinders then a ducted system is best, if they have smaller pieces that they move around then a downdraft table might be most efficient, however if the operator is using a hand grinder and working around a piece of material then a booth would make the most sense. Some optional equipment may include sludge conveyors, HEPA filters or explosion proof motors among many others. Although wet collectors offer slightly more maintenance hours versus cartridge collectors, they are innately safer due to the use of water and they offer peace of mind that explosion protection systems can’t give you as the goal of the wet collector is to avoid the explosion altogether rather than protect against it.
State of the art wet collection booths for grinding, sanding or polishing aluminum, titanium, or other explosive materials. HPB booths can be made to any size from 7.5’H x 8’W x 8’D to 10’H x 40’W to 20’D, or any other custom size is possible as well. Each booth is built to order, these units run from 6000 to 40,000 CFM making them versatile for any application. HPB booths use a push/pull system where the clean air is regained to the front of the booth to push the airflow toward the main wall of dust collection baffles. This allows for a minimum of 400-800FPM through the working zone ensuring complete capture of dangerous particluates.
The Filter-1 HWF, uses water like all Hydrotron models, to purify the air stream by a combination of by a combination of centrifugal force and the violent mixing of water and contaminated are. As the air stream passes the fixed baffles the particulate is separated. The HWF is most commonly used for aluminum, titanium, and other hazardous dusts as well heavy sparking applications. These units meet or exceed OSHA and NFPA standards for dust removal inside of a building. HWF models range in standard sizes from 500 to 15,000 CFM and in larger sizes for custom orders.
Ranging in size from 2.5’ x 4’ to 3’ x 8’ and from 3000 to 6000 CFM, DHYD wet downdraft tables allow for the safe collection of fine aluminum, titanium, or any other potentially explosive dust. Wet downdraft tables are also effective in high sparking applications and meet or exceed OSHA and NFPA regulations for explosive dust collected inside of a of a building.