coke - *from wiki - beware wikileaks - Uses[edit] Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. The carbon monoxide produced by its combustion reduces iron oxide (hematite) in the production of the iron product. Since smoke-producing constituents are driven off during the coking of coal, coke forms a desirable fuel for stoves and furnaces in which conditions are not suitable for the complete burning of bituminous coal itself. Coke may be combusted producing little or no smoke, while bituminous coal would produce much smoke. Discovered by accident to have superior heat shielding properties when combined with other materials, coke was one of the materials used in the heat shielding on NASAs Apollo Command Module. In its final form, this material was called AVCOAT 5026-39. This material has been used most recently as the heat shielding on the Mars Pathfinder vehicle. Although not used for modern day space shuttles, NASA had been planning to use coke and other materials for the heat shield for its next generation space craft, named Orion.[citation needed] Coke was widely used as a substitute for coal in domestic heating following the creation of smokeless zones in the United Kingdom. Highland Park distillery in Orkney roasted malt barley for use in their Scotch whisky in kilns burning a mixture of coke and peat.[19]
Posted on: Wed, 06 Aug 2014 04:33:06 +0000
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