Metal reduction reaction vessel, metal reduction reaction vessel manufacturing method, and sponge titanium manufacturing method

摘要

PROBLEM TO BE SOLVED: To provide a metal reduction reaction vessel capable of suppressing Fe elution which is an impurity metal in a manufacturing process of a titanium sponge ingot. SOLUTION: This is a metal reduction reaction vessel, and includes an inner wall surface layer 11 located inside from a surface 10a of an inner wall 10 and containing Ti and a barrier metal M. [Selection diagram] Fig. 1