It's a scrubbing material, composed of asbestos fibers or any other appropriate silicate material whose chemical make-up is such that it is characterized by high adsorption potential for polyaromatic hydrocarbons, is mixed with a small amount of clay and water, fashioned into small pellets by readily available technology, and dried at relatively low temperatures to afford the production of small solid pellets. This pelletized adsorbing material is used as the active scrubbing filler material in the core of an appropriately shaped container, which is affixed on the tail end of the exhaust systems of equipment and/or industrial processes known to generate fumes containing soot particles and noxious chemicals, such as polyaromatic hydrocarbons, nitrous oxides, sulfur oxides, etc.
The preferred adsorbing silicates are chrysotile asbestos (magnesium silicate) and attapulgite (aluminium and magnesium silicate). When mixed with a clay material such as bentonite or other similar cementitious material, and water, it is possible to shape the wet mixtures into small pellets, whose dimensions are such that they may be retained within a cartridge made up of a wire mesh. The cartridge filled with the pellets is contained inside an appropriately shaped metal container. This apparatus is affixed in such a way as to allow normal flow of the exhaust gases, and to afford the desired effect: trapping of soot particles, and adsorption of the noxious chemicals present in the exhaust gases.
Don't eat it.
-RPM