Methods of treating silicious materials to form silicon carbide

Abstract

Abstract A method is provided for treating oxygen bearing silicious materials, particularly those containing ferrous metal to produce silicon carbide and metallic iron comprising the steps of mixing a silicious material with at least a stoichiometric amount of carbon to combine with the oxygen bearing silicon compounds in the material to form silicon carbide and to reduce the oxygen compounds of iron to the metallic state, heating the mixture in a non-oxidizing atmosphere to a temperature in excess of 2,500* F., holding the temperature until there is no further reaction between silicon and carbon, comminuting the resulting product to free any metallic iron formed, separating the metallic iron magnetically and collecting the non-magnetic residue as silicon carbide.

Inventors

• 👤 M Irani

Bibliographic Details