| 摘要 |
PURPOSE:To contrive to extremely improve heat efficiency in reacting a metallic oxide with carbon in a solid phase, by dropping raw materials through a preheating zone of a reactor, fluidizing the raw materials with a gas containing a reducing reaction gas in a heating zone to give a carbide and cooling the carbide in a cooling zone. CONSTITUTION:Raw materials consisting of metallic oxide powder and a carbonaceous substance are fed from the top of a reactor having a preheating zone, a heating zone and a cooling zone. As the raw materials are dropped in the preheating zone under gravitation, reach the heating zone. The raw materials are heated in the heating zone while being fluidized with a fluidizing gas containing at least a reducing reaction gas to form a carbide. Then a reaction product containing the carbide is dropped to the cooling zone, cooled in a nonoxidizing atmosphere and the reaction product is discharged from the bottom of the reactor. By this method, various carbides can be produced in high yield, stably and continuously and operation can be carried out under an extremely effective condition. |
