| abstract |
(57) [Summary] [PROBLEMS] To provide a method for refining high-purity metallic titanium efficiently and excellent in mass productivity. SOLUTION: A stainless steel container 8 containing a calcium chloride bath 17, an alumina container 16 containing the stainless steel container 8, a stainless steel lid 9 for closing an opening of the alumina container 16, and electricity for heating the calcium chloride bath 17 are provided. It has a furnace heating element 1, an argon gas inlet 4 and an argon gas outlet 5 provided in a stainless steel lid 9. A graphite anode plate 18, an iron cathode plate 19, and a molybdenum container 20 are inserted into a calcium chloride bath 17. Inside the molybdenum container 20, titanium oxide powder 21 Is stored. The graphite anode plate 18 has an iron lead wire 23a, and the iron cathode plate 19 has an iron lead wire 23a. b is connected. An electrolytic voltage is applied between the graphite anode plate 18 and the iron cathode plate 19 by the DC power supply 24 via the iron lead wires 23a and 23b. |