Abstract: A melting furnace, mounted adjacent a growth furnace, comprises a receiving container for melting therein raw material in a particle or powder form falling in it from a feeder. The receiving container accommodates a set of slope-wise plates providing a distributed sliding of partially melted raw material particles over the surface of these plates and their complete melting while moving downward; eventually the melted raw material flows into the crucible of the growth furnace through a conveying tube extending slantingly from the bottom of the receiving container to the crucible through coaxial openings in housings of both furnaces. The rate of feeding is given solely by the feeder, and at continuous feeding the raw material flows continuously by gravity from the feeder to the crucible of the growth furnace, first in a solid state (powder, granules, pellets, etc.) and then in a liquid state.

Abstract: A melting furnace is mounted adjacent a growth furnace in which a single crystal ingot is pulled from the melt according to the Czochralski method. The melting furnace comprises a receiving container for melting therein raw material in a particle or powder form falling in it from a feeder. The receiving container accommodates a set of slope-wise plates providing a distributed sliding of partially melted raw material particles over the surface of these plates and their complete melting while moving downward; eventually the melted raw material flows into the crucible of the growth furnace through a heated conveying tube extending slantingly from the conical bottom of the receiving container to the crucible through coaxial openings in housings of both furnaces. The rate of feeding is defined solely by a feeder, and at continuous feeding the raw material flows continuously by gravity from the feeder to the crucible of the growth furnace, first in a solid state (powder, granules, pellets, etc.