METHOD AND APPARATUS FOR PRODUCING ULTRA-FINE TITANIUM CARBIDE POWDER

摘要

PURPOSE:To produce the titled high-purity ultra-fine TiC powder having uniform particle diameter by mixing and crushing TiH2 and carbon powder and successively moving the mixture through a heating part in a nonoxidizing or inert atmosphere under specified heating conditions. CONSTITUTION:TiH2 and carbon powder are mixed and crushed, the prepared mixed powder 8 is charged into a carbon vessel 9 set in a furnace body 1, a lid 2 is mounted and shut tight, then N2 and/or gaseous argon are supplied into the furnace body 1 from a gas source 3 and the inside of the furnace body is filled with a non-oxidizing or inert atmosphere. A high-frequency coil 5 connected to a high-frequency electric power source 7 is successively moved from the left end of the furnace body 1 to the right through a guide 6 and a driving gear, and the mixed powder heating part is kept at 850-1,300 deg.C for at least 30min. The TiH2 constituting the mixed powder 8 reacts with C and fine TiC powder and H2 are formed. The inert gas and the formed gaseous H2 are discharged by an exhauster 4 to the outside of the system and treated.