REACTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To prevent the plugging of powder occurring due to a sudden flow rate control of the powder to be supplied to a slurry preparation vessel in a reaction apparatus for reacting powder with liquid. SOLUTION: The flow rate of the powder to be supplied to the slurry preparation vessel 10 is controlled using a feedforward control based on the flow rate signal of a slurry solution to be supplied to a reaction vessel 30 from the slurry preparation vessel 10 and a feedback control based on the liquid level signal of the slurry preparation vessel 10 in combination. The flow rate of the liquid to be supplied to the slurry preparation vessel 10 is controlled based on the specific gravity of the slurry solution to be extracted from the slurry preparation vessel 10 and the flow rate of the powder to be supplied. COPYRIGHT: (C)2004,JPO