Technological process of preparing titanium sponge from starting material sodium fluorotitanate

摘要

A technological process of preparation of titanium sponge from starting material fluorotitanate sodium, characterized in that the devices for preparing titanium sponge include: a reactor and coverage reactor with a stirring device, in which a sealing ring is disposed between reactor cover and the reactor; a lifting device for controlling lifting coverage reactor is disposed on the side surface coverage reactor, a furnace sealed air resistance is further arranged above coverage reactor, a valve is disposed below the oven resistance; and an evacuation tube and a gas fill tube are disposed above the reactor cover; the method comprises the following steps: Step A: for aluminum in the furnace sealed air resistance, evacuating, introducing inert gas into the furnace and heat resistance for aluminum molten aluminum; Step B: open coverage reactor, add an appropriate amount of sodium fluorotitanate reactor, reactor cover closed, leaks, slowly heating the reactor to 150 ° C, evacuated and continuously heating the reactor to 250 ° C; Step C: introducing inert gas into the reactor, continuously heating the reactor to 900 ° C and stir uniformly; Step D: open the valve, to adjust the stirring rate, adding dropwise the molten aluminum and controlling the reaction temperature in a range of 900 to 1000 ° C; and Step E: opening the reactor cover, remove the stirring device outside the reactor and remove the top layer NaAlF4 for titanium sponge.