Method of producing sponge titanium by using titanium hydride powder titanizing in new reactor

Abstract

The invention provides a method for infiltrating titanium with titanium hydride powder in a new reactor for producing sponge titanium. After leak detection, acid leaching, water washing, and drying, the inner wall surface layer of the new reactor producing sponge titanium is evenly coated with titanium hydride powder with a thickness of 0.08-0.5 mm and a particle size diameter of not more than 0.043 mm. Put the new reactor after painting into the heating equipment, degas at low temperature at 150-250°C for 2-5 hours under vacuum, then dehydrogenate at medium temperature, the temperature is controlled at 250-350°C, 350- 550 ℃, 550 ~ 700 ℃ three constant temperature section, and each constant temperature 1 ~ 2 hours. After the dehydrogenation is completed, inert gas is input, and then sintered at a high temperature of 960-980°C for 8-15 hours. After the high-temperature sintering is completed, it is taken out and placed in a cooler for cooling, thus completing the titanium infiltration of the present invention. It has low cost, uniform particles, excellent fluidity and adhesion, and good titanium infiltration effect, thus ensuring the product quality of titanium sponge.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metals, and in particular relates to a method for infiltrating titanium with titanium hydride powder in a new reactor for reducing and distilling sponge titanium. Background technique [0002] The new reactors used for the reduction and distillation of titanium sponge are generally made of ordinary carbon steel. In order to prevent the rust and iron on the surface of the inner wall of the new reactor from entering the titanium sponge lump at high temperature, the inner surface of the new reactor must be infiltrated with titanium before use to ensure the product quality of Haijin Titanium. The particle size and internal quality requirements of the titanium powder required for the titanium infiltration of the new responder are relatively high, and the particle size diameter is generally required to be no greater than 0.043mm. [0003] The routinely used titanium powder infiltration method is to ...

AI Technical Summary

Problems solved by technology

Because the titanium powder required for titanium infiltration is not easy to obtain, especially when sieving fine-grained titanium powder, the labor intensity and material loss are large, and the cost is high. Moreover, the titanium powder is easily polluted by oxygen and nitrogen during sieving, and the sieving Titanium powder particles are uneven, poor fluidity and adhesion