On the Electro-Refinning of Crude Titanium in the Fused Salt Bath and Mechanical Properties of the Refined Titanium

The crude titanium which was produced by both electrolytic reduction and carbon arc reduction of titanium oxide was purified in a fused salt bath of alkali halide by the electro-refinning method, and the mechanical properties of titanium was measured. It was found that the contents of carbon and oxygen were less than 0.03% for the electro-refined titanium obtained by the electrolytic reduction method, and the contents of Fe, Si, Al and Mn decreased compared with those in the raw crude titanium. The titanium electro-refined by the carbon arc method was higher in purity than that of the special grade sponge titanium, and its mechanical properties were superior to those of the sponge titanium by the Kroll method, with the same excellent qualities as the Iodide titanium.