| 摘要 |
The invention relates to a process for refining silicon produced in an arc furnace, removing non-reduced quartz or unreacted carbon. To this end, the silicon is fused in a highly compacted graphite crucible (4) or a quartz crucible, as a result of which the non-reduced quartz and the unreacted carbon collect on the crucible wall. If required, it is also possible to charge the graphite crucible with slag- or glass-forming fluxes. Subsequently, the silicon thus refined is processed further by means of zone drawing or, according to Czochralski, into single crystals. <IMAGE>
|
