Man's physical universe

xanabras

:

OXYGEN AND SULFUR, CARBON AND SILICON 629

a porous form, called "coke."

Coke is also obtained in the refining of

petroleum. Coke, like anthracite coal, is an excellent fuel, but it is

used chiefly as a reducing agent in the refining of metals, especially iron,

and in the production of inorganic carbon compounds.

The combustion of coke provides heat to decompose limestone,

carbon dioxide and lime being produced in the reaction

02

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