Acheson Process
Silicon carbide powder is commercially produced by this method. In this process a mixture of silica, carbon and small saw dust is heated in an electric furnace using a central core of graphite and coke as the electrical heating element.
The heating process is carried over at a maximum temperature of about 2700.C. The pyro chemical reaction can be explained as follows
SiO2+3C–>SiC+2Co
In this process large grains of silicon carbide crystals with 97% purity can be produced and this can be used for normal industrial applications.
To be contd…..
