The reaction container for sponge titanium production, the heat shield board, and the sponge titanium production method of being used for this

摘要

The high purity sponge titanium where the Ni quantity, the Cr quantity and the Fe quantity are small is produced at high yield. The reaction container which is used for the production of the high purity sponge titanium with Kroll process (A) at least the container itself (10) the inside below bath surface level is designated as the carbon steel. The cover body (20) with the container itself (10) the heat shield board which is installed with the bath surfaces inside (30) it makes carbon steel, at the same time, that at least in the underside, it provides the carpet course which designates the metallic oxide of TiO₂ and the like as subject. The reaction container (A) the sponge titanium lump which is produced inside the container itself (10) from after removing, that sponge titanium lump blooming is done in the plural small lump groups. Each density of Fe, Ni and Cr of each small lump group is measured, only the small lump group where these high impurity concentrations are below reference level is designated as the product.