The waste by-product of burning coal and oxidized metal that have formed together. As said, it is a waste and end product of burning coal and heating iron.
Anthracite coal is more common as the fusion temperature is higher and produces less clinkers (molten hardened ash deposits) on grates. Bituminous coal is usable in many applications that do not use grate systems that can be fouled by clinkers. Most coal is burned on traveling or shaking grates, however, bituminous coal can be burned in fluidized combustion bed furnaces without the clinker buildup from burning on grates.
Clinkers, also known as slag, consist of the noncombustible elements and minerals found in coal that melt and fuse together as lumpy ashes from coal combustion. Boiler operators consider clinkers to be miserable stuff
Blacksmithing is a crafting profession in the popular game World of Warcraft. Blacksmithing in related with other professions in the game such as mining.
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Yahoo groups, Google groups and Facebook all have groups devoted to blacksmithing.
blacksmithing
The Flog - 2012 Blacksmithing - 1.1 was released on: USA: 2 April 2012
Blacksmithing is working with iron by heating it and then pounding it into shape. In the parts of the world where iron use started first--the Middle East, Europe and India--blacksmithing started when iron use started, about 3200 years ago.
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His blacksmithing
Blacksmithing