Patent ID: 6065860
Filing Date: 2000-05-23
Classification: B01F

Abstract:
A method for dissolving a particulate solid in a liquid to form a solution of substantially homogenous concentration, said method comprising the steps of:providing a baffleless vessel for producing a substantially circular non turbulent flow of liquid about a longitudinal axis of said vessel, said vessel having a cylindrical portion provided with a smooth continuous inside surface and formed continuously with a large diameter end of a conical frustum portion, said conical frustum portion having an outlet a small diameter end for discharge of said liquid or said solution;pouring said liquid into said vessel;recirculating the liquid through the vessel between at least one inlet to the vessel and an outlet formed in the vessel;disposing said at least one inlet for directing said liquid parallel to an inside surface of the vessel to produce said circular flow of said liquid; andadding particulate solid to the liquid or solution while maintaining said recirculating and said circular flow to apply forces on any undissolved particulate solid to hold said any undissolved particulate solid in an upper region of the cylindrical portion until it dissolves, the combined action of recirculating said liquid or solution and producing said circular flow substantially fully dissolving the particulate solid prior to flowing through the output to form a solution of substantially homogenous concentration.