METHOD OF PRODUCING TITANIUM POWDER Russian patent published in 2017 - IPC B22F9/16 C22B34/12 

FIELD: metallurgy.

SUBSTANCE: method involves loading sponge titanium into a retort, vacuuming and heating it in a vacuum, feeding hydrogen to the retort with hydrogenation of the sponge titanium while cooling the retort, extracting the hydrogenated sponge titanium from the retort, grinding it and sieving it into fractions, charging the crushed hydrogenated titanium powder in the retort, dehydrogenating it, cooling the retort and extracting the titanium powder. Hydrogen is fed into the retort at a speed of not more than 360 m³/hour per 1m² of the retort section with the provision of an excess hydrogen pressure in the retort of not more than 44 kPa. The hydrogenated sponge titanium is ground in an argon atmosphere at an excess pressure of not more than 10-20 kPa, and the dehydrogenation is carried out by sealing the retort, evacuating it to a residual pressure of 0.01 kPa, heating and supplying argon at an overpressure of 10-30 kPa, wherein hydrogen released during dehydrogenation together with argon with a residual pressure of 0.01 kPa and a thermal aging is carried out for 3-5 hours.

EFFECT: production of titanium powder of a given shape, fragmentation, needle type, with a reduced content of gas impurities such as hydrogen, nitrogen, chlorine and oxygen is ensured.

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