PURPOSE: To carry molten at high speed, by jointing between the lead-in section and the feeding section of molten metal in loop such that the long side of a flat refractory molten guide tube will be horizontal and producing a circular moving magnetic field around the long side.

CONSTITUTION: A refractory molten guide pipe 11 having a molten lead-in section 11a and a molten feeding section 11b is formed in loop. The guide pipe 11 has rectangular elongated cross-section with the long side thereof being set horizontal, and annular upper and lower inductors 12, 13 are arranged on the upper and lower faces. The upper and lower inductors 12, 13 are arranged in circular with magnetic poles 14a1∼14an wound with coils 15a1∼15an then AC three-phase voltage is applied through terminals R, S, T to produce circular endless moving field. Consequently, molten can be carried efficiently at high speed according to the field produced by eddy current produced in the molten and the circular moving field.