Production of raw materials: sponge titanium or titanium scrap.
Sponge titanium:
Sponge metal titanium produced by metal thermal reduction. The purity % (mass) is generally from 99.1 to 99.7. The total amount of impurity element % (mass) is 0.3 to 0.9, the impurity element oxygen % (mass) is 0.06 to 0.20, and the hardness (HB) is 100 to 157, and is classified into five grades of WHTiO to MHTi4 depending on the purity. In order to obtain the main raw materials of industrial titanium alloy. Sponge titanium production is the basic link of the titanium industry, which is the raw material for titanium, titanium powder and other titanium components. The ilmenite is changed into titanium tetrachloride, placed in a sealed stainless steel tank, and filled with argon gas to react them with metallic magnesium to obtain "sponge titanium". Such porous "sponge titanium" cannot be used directly, and must be melted into a liquid in an electric furnace to be cast into a titanium ingot.
