| 摘要 |
The invention provides a technological method for preparing sponge titanium from sodium fluotitanate raw material, comprising the following steps: step A: placing aluminum in an airtight resistance furnace, evacuating, introducing inert gas into the resistance furnace, and heating the aluminum to obtain molten aluminum; step B: opening a reactor cover, adding a proper amount of sodium fluotitanate into the reactor, closing the reactor cover, detecting leakage, slowly heating the reactor to 150°C, evacuating and continuously heating the reactor to 250°C; step C: introducing inert gas into the reactor, continuously heating the reactor to 900°C, and stirring uniformly; step D: opening a valve, adjusting the stirring speed, dripping the molten aluminum, and controlling the temperature of reaction in a range from 900 to 1000°C; and step E: opening the reactor cover, removing a stirring device out of the reactor, and eliminating NaAlF 4 at upper layer to obtain sponge titanium. The invention has the advantages that: the technological method is short in technological flow, low in cost, harmless and environment-friendly, and the final resultant sponge titanium can be directly applied to technological production, further saving resources and cost. |
