Fog Dust Control
FOG ON A ROTARY RAIL DUMP
FOG ON A PRIMARY JAW CRUSHER
FOG NOZZLE ASSEMBLY
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Understanding Fog Dust Control Technology
ADS™ fog based dust collection systems are highly efficient, patented, in situ, fine particulate scrubbers that use very little water, no chemicals, and do not increase the overall moisture content of the flowing material by more than a few hundredths of a percent.
ADS™ technology is based on the principals of agglomeration of particles of like size and nucleation of sub-micron particles during condensation of water from a supersaturated atmosphere. These are the same principals that nature uses to cleanse the atmosphere.
Merriam Webster defines fog as … “vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground”.
Clouds are natures’ solution to pollution. Dust and other particles that are delivered into the atmosphere by wind, volcanoes, or by human activities are “collected” by the small water droplets and delivered back to earth as rain. This “collection” is the result of three phenomena: nucleation, agglomeration, and electrostatic attraction.
Nucleation is the process whereby water vapor condenses on a very small particle thus forming the water droplet.
Agglomeration is the process whereby droplets and particles of similar size collide and form a larger, heavier droplet.
Electrostatic attraction enhances agglomeration when the charges of two nearby particles or droplets are opposite. In nature, water droplets in clouds are often neutral but in storm conditions, the upward flow of warm, humid air rips electrons off of the cloud droplets causing a static differential between areas within the clouds causing lightening strikes when the differential reaches a critical level..
The Raring Corporations’ ADS(TM) dust control system works in much the same way as nature. A cloud is created using sonic air assist nozzles. The dust and fog are contained in a suitably designed environment to permit the collection processes to occur sufficiently. Electrostatic charge is induced naturally through the atomization process. And nucleation occurs due the the dynamics of air movement within the containment.
ADS™ Fog Based Dust Collection Systems
ADS fog based dust collection & dust suppression systems are highly efficient, patented, in-situ, fine particulate scrubbers that use very little water, no chemicals, and do not increase the overall moisture content of the flowing material by more than a few hundredths of a percent.
Principal of Operation
What is “fog” and why it is needed?
History of Fog Technology
How Efficient is ADS Fog Technology?
Using Fog With Other Technologies to Maximize Overall Dust Control
Coal Mining Applications
Fog based dust control technology was first used in coal mining applications in 1995 in the Powder River Basin region of the western United States. Today, roughly 300 million tons per annum are mined in that region using the technology and dust extraction is an all but extinct.
Fog systems do not add measurable moisture to the flow of coal, they do not create ice or other freezing problems in cold climates, and they do not require any chemical or especially clean water.
Properly designed and maintained fog systems can achieve 99% dust reduction in many applications.
ADS is the right choice for:
Fog is often used in conjunction with passive dust control technologies such as stilling sheds and engineered chutes.
Fog is not a good solution for:
TRC is the leader in the use of fog for truck dumps with stilling sheds . Contact us for references and a presentation.
TRC’s coal mining customers includes the biggest names in the industry.
Minerals Mining Applications
Fog based dust control technology is commonly used for the control of fugitive emissions at minerals mining installations in dry climates world-wide. We are in copper, gold, silver, manganese, molybdenum, iron , and nickel mines in north and south America, Australia, South Africa, India, and Asia.
Where to Use Fog:
ADS is the right choice for
Fog is often used in conjunction with passive dust control technologies such as wind fences, stilling sheds and engineered chutes.
Where To Use Water or Water with Chemical :
For best results, water should be added at multiple locations to maximize uniformity of saturation.
We often combine water spray and fog systems to achieve optimum plant-wide dust control.
Our customer base includes virtually all of the major mining and mining engineering companies world wide.