TECHNOLOGY FOCUS - METALLURGY - Preferred Apparatus: In the ingot manufacturing apparatus, the distance from a surface of the molten silicon to an end of the feeding part is the same as or greater than a distance from the surface of the molten silicon to an end of the suction part. The suction part and the feeding part have the same central axis. The supply rate of the sweeping gas which is supplied from the feeding part is substantially the same as or less than a suction rate of the sweeping gas which is discharged through the suction part. The silicon dust having a diameter less than a diameter of the silicon particle is introduced within the chamber through the feeding part, and where the suction part discharges the silicon dust to the outside of the chamber. The suction part discharges not only the silicon dust but silicon oxide within the chamber to the outside of the chamber. The distance between an end of the feeding part and an inner surface of the suction part is less than a distance between the inner surface of the suction part and an outer surface of the feeding part in an area where the feeding part is bent within the chamber. Some of the sweeping gas is discharged to the suction part through a through-hole formed in a side of the feeding part, and where a diameter of the through-hole is less than a diameter of an end of the feeding part. The ingot manufacturing apparatus further comprises a divider which divides a suction space between the suction part and an end of the feeding part into a set of spaces by connecting an inner surface of the suction part and an outer surface of the feeding part. The suction part comprises a set of units, and where each of the units is connected to an outer surface of the feeding part. The temperature of the sweeping gas passing an end of the feeding part is lower than a temperature of the inside of the chamber. Alternatively, the ingot manufacturing apparatus comprises: a chamber; a crucible which is disposed within the chamber and has a melting zone where silicon particles are melted; an inner wall which is disposed within the crucible and has a growth zone where an ingot grows from molten silicon introduced from the melting zone; a feeding part which supplies the silicon particles and sweeping gas to the inside of the chamber; and a suction part which is disposed within the feeding part and discharges the sweeping gas supplied through the feeding part to the outside of the chamber. The distance from a surface of the molten silicon to an end of the suction part is the same as or greater than a distance from the surface of the molten silicon to an end of the feeding part. The suction part and the feeding part have the same central axis. The supply rate of the sweeping gas which is supplied from the feeding part is substantially the same as or less than a suction rate of the sweeping gas which is discharged through the suction part. The silicon dust having a diameter less than a diameter of the silicon particle is introduced within the chamber through the feeding part, and where the suction part discharges the silicon dust to the outside of the chamber. The suction part discharges not only the silicon dust but silicon oxide within the chamber to the outside of the chamber. The diameter of an end of the suction part is less than a diameter of the suction part in an area where the feeding part is bent within the chamber. Some of the sweeping gas is discharged to the suction part through a through-hole formed in a side of the suction part, and where a diameter of the through-hole is less than a distance between an inner surface of the feeding part and an outer surface of the suction part. The temperature of the sweeping gas passing an end of the feeding part is lower than a temperature of the inside of the chamber. In a second alternative case, the ingot manufacturing apparatus comprises: a chamber; a crucible which is disposed within the chamber and has a melting zone where silicon particles are melted; an inner wall which is disposed within the crucible and has a growth zone where an ingot grows from molten silicon introduced from the melting zone; a feeding part which supplies the silicon particles and sweeping gas to the inside of the chamber; a suction part which discharges the sweeping gas supplied through the feeding part to the outside of the chamber, surrounds the feeding part or is disposed within the feeding part; a communicating tube which communicates the inside of the chamber and the suction part and provides a flow path through which the sweeping gas moves to the outside of the chamber; a main filter which filters dusts included in the sweeping gas moving through the communicating tube; and a main pump which provides a pressure required for the sweeping gas to move through the communicating tube.