NOVELTY - The apparatus comprises a vacuum chamber for maintaining a vacuum atmosphere. An electron gun is arranged in the vacuum chamber for irradiating an electron beam. A silicon melting part melts the silicon raw material by the electron beam. A unidirectional solidification unit solidifies the silicon melt. A connection bath furnace part is connected between the silicon melting part and the unidirectional solidification unit. The silicon material fused with the electronic beam is loaded in a first channel section and in a second channel section.    USE - The apparatus is useful for refining silicon (claimed) that is used for manufacturing a solar cell.    ADVANTAGE - The apparatus can prevent the fused silicone to protect the connection bath furnace part and the connection bath furnace part from being ruined with the electronic beam, prevent the silicon melting part from pollution, remove the volatile impurity within silicone molten metal, and improve the refining effect of the silicone.    DETAILED DESCRIPTION - The apparatus comprises a vacuum chamber for maintaining a vacuum atmosphere. An electron gun is arranged in the vacuum chamber for irradiating an electron beam. A silicon melting part melts the silicon raw material by the electron beam. A unidirectional solidification unit solidifies the silicon melt. A connection bath furnace part is connected between the silicon melting part and the unidirectional solidification unit. The silicon material fused with the electronic beam is loaded in a first channel section and in a second channel section. A pair of side parts extended in both ends of a backside of the connection bath furnace part, where the distance between the respective side parts is narrow according to the direction in which the silicone molten metal is transferred and the distance between the respective side parts facing the connection bath furnace part becomes broad. The backside of the connection bath furnace part has a curved surface that has a predetermined curvature. The silicon melting part or the one-way direction solidification part has the copper material. The silicon melting part comprises two passage parts and a fluid path part including multiple fluid paths that are formed by multiple slits. The passage parts are spatially connected through an inner portion of the silicon melting part. The unidirectional solidification part is provided with a set of cooling channel parts.