Definition of blast furnace in English:

blast furnace

Syllabification: blast fur·nace

noun

A smelting furnace in the form of a tower into which a blast of hot compressed air can be introduced from below. Such furnaces are used chiefly to make iron from a mixture of iron ore, coke, and limestone.
More example sentences
  • The traditional method for extracting pure iron from its ore is to heat the ore in a blast furnace with limestone and coke.
  • The roasting process uses oxygen in a blast furnace to convert the metal sulfide into the metal or the metal oxide plus sulfur dioxide.
  • The explosion occurred when molten iron leaked from a blast furnace.

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