Bottom ash refers to the non-combustible constituents of coal with traces of combustibles embedded in forming clinkers and sticking to hot side walls of furnace during the furnace working. For an Authority Having Jurisdiction, combustibility is defined by the local code The clinkers fall by themselves into the water or sometimes by poking manually, and get cooled. Clinker is a general name given to waste from industrial processes - particularly those that involve Smelting metals burning Fossil fuels and using a Blacksmith
The clinker lumps get crushed to small sizes by clinker grinders mounted under water and fall down into a trough from where a water ejector takes them out to a sump. An injector, ejector, steam ejector or steam injector is a pump-like device that uses the Venturi effect of a converging-diverging From there it is pumped out by suitable rotary pumps to dumping yard far away. In another arrangement a continuous link chain scrapes out the clinkers from under water and feeds them to clinker grinders outside the bottom ash hopper.
Bottom ash may be used as an aggregate in road construction and concrete, where it is known as furnace bottom ash (FBA), to distinguish it from incinerator bottom ash (IBA), the non-combustible elements remaining after incineration. Incinerator bottom ash (IBA is a form of ash produced in Incineration facilities Incineration is a waste treatment technology that involves the Combustion of organic materials and/or substances It was also used in the making of the concrete blocks used to construct many high-rise flats in London in the 1960s
See also
External links
- EcoSmart Concrete : A site dedicated to the use of Fly ash and other supplementary cementing materials in concrete. London ( ˈlʌndən is the capital and largest urban area in the United Kingdom. The 1960s decade refers to the years from the beginning of 1960 to the end of 1969 Fly ash is one of the residues generated in the Combustion of Coal.
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