Technological method for preparing sponge titanium from sodium fluotitanate raw material

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 NaAlF4 at upper layer to obtain sponge titanium.

主权项

1. A technological method for preparing sponge titanium from sodium fluotitanate raw material, characterized in that, devices for preparing sponge titanium include: a reactor and a reactor cover with a stirring device, wherein a sealing ring is arranged between the reactor cover and the reactor; a lifting device for controlling the lifting of the reactor cover is arranged on a side surface of the reactor cover, an airtight resistance furnace is further arranged above the reactor cover, a valve is arranged below the resistance furnace; and an evacuating tube and a gas filling tube are arranged above the reactor cover;
the method comprises the following steps:
step A: placing aluminum in the airtight resistance furnace, evacuating, introducing inert gas into the resistance furnace, and heating the aluminum to obtain molten aluminum;step B: opening the reactor cover, adding 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 the valve, adjusting a stirring speed, dripping the molten aluminum, and controlling a temperature of reaction in a range from 900 to 1000° C.; andstep E: opening the reactor cover, removing the stirring device out of the reactor, and eliminating NaAlF4 at an upper layer to obtain sponge titanium.