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The hot blast temperature can be from 900 to 1,300 °C (1,650 to 2,370 °F) depending on the stove design and condition. ... natural gas) use in blast furnaces is a ...
Blast furnace gas (BFG) [1] is a by-product of blast furnaces that is generated when the iron ore is reduced with coke to metallic iron. It has a very low heating value , about 3.5 MJ/m 3 (93 BTU /cu.ft), [ 2 ] because it consists of about 51 vol% nitrogen and 22 vol% carbon dioxide , which are not flammable.
Coking is the process of heating coal in the absence of oxygen to a temperature above 600 °C (1,112 °F) to drive off the volatile components of the raw coal, leaving behind a hard, strong, porous material with a high carbon content called coke.
James Beaumont Neilson, previously foreman at Glasgow gas works, invented the system of preheating the blast for a furnace.He found that by increasing the temperature of the incoming air to 149 °C (300 °F), he could reduce the fuel consumption from 8.06 tons of coal to 5.16 tons of coal per ton of produced iron with further reductions at even higher temperatures. [4]
Gas / Fuels Flame temperature Propane in air 1980 °C 3596 °F ... Coal in air (blast furnace) 1900 °C 3452 °F Cyanogen (C 2 N 2) in oxygen 4525 °C 8177 °F
The internal operating temperature of the water jacket furnace is lower than that of a blast furnace used to make iron, and the process does not depend upon the formation of a bosh shell, as is critical in the operation of a blast furnace making iron. Conventional blast furnaces used for smelting iron ore use a hot blast.
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Hydrogen gas at room temperature. Ice: 1.6 [23]-2.1 ... 1940s Blast Furnace: 1.58 1.55 1.53 List [32] 533 ... The cited Andersland Charts include corresponding water ...