Saint-gobain Ceramic Materials As

Simonpietro Di Pierro

Bruno Aleonard

Matthieu Schwartz

A process for manufacturing SiC wherein the emissions of polluting gases are minimized, by reduction of silicon oxide by an excess of carbon, the process including electrically heating a resistor at the heart of a mixture of raw materials consisting of a carbon-based source chosen from petroleum cokes and a source of silicon, especially a silica having a purity of greater than 95% of SiO, in order to give rise, at a temperature above 1500&#xb0; C., to the simplified reaction: SiO+3C=SiC+2CO (1), wherein the carbon-based source first undergoes a treatment for removing the contained hydrogen, so that its elemental hydrogen content (EHWC) is less than 2% by weight.

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Simonpietro Di Pierro