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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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B
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Blast_furnace
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1992-09-03
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13 lines
A blast furnace is a smelting furnace used to
extract metals from their ores. The
temperature is raised by the injection of an
air blast. In the extraction of iron the
ingredients of the furnace are iron ore,
coke, and limestone. The principle has been
known for thousands of years, but the present
blast furnace is a heavy engineering
development combining a number of special
techniques.
Subject by: John Denver