Patent ID: 6464385
Filing Date: 2002-10-15
Classification: B01F

Abstract:
A method for adjusting starting materials to prepare the starting materials into a slurry by dissolution of such starting materials into a solvent, which comprises steps of: charging predetermined quantities of starting materials into an inner cavity of a material blending tank 1 which is constructed in a pressure-resistant and tightly closed version, followed by hermetically sealing the same; filling, in advance, a predetermined quantity of solvent in a large-sized material adjusting tank 2; pumping out said solvent from the bottom part of said material adjusting tank 2 by means of a pump P, and feeding said solvent into the inner cavity of said material blending tank 1 from the bottom part thereof by means of said pump P; stopping operation of said pump P as soon as the air within said material blending tank 1 becomes compressed to a high pressure level, and causing said solvent, which has been pressure forwarded into said material blending tank 1 to flow in the reverse direction into said material adjusting tank 2 through the inner cavity of said pump P under the pressure of air compressed in said material blending tank 1; and repeating, for a plurality of number of times, the pressure-feeding of said solvent into said material blending tank 1 by the operation of the pump P, and the reverse flow of said solvent into said material adjusting tank 2 by the stoppage of said pump P.