Dispersion apparatus
AssigneeSpectrum Sciences B.V.
InventorsBenzion Landa, Haim Hochman, Naseem Yacoub
Life of this patent
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Abstract
Apparatus for dispersion of solids in liquids including two relatively movable elements arranged so as to define a dispersing volume therebetween, a multiplicity of separate generally cylindrical dispersing elements disposed within the dispersing volume, and apparatus for supplying a solid suspended in a liquid to the dispersing volume for dispersing and for removing a solid dispersed in a liquid from the dispersed volume after dispersing, wherein the relatively movable elements are separated at the dispersing volume by a separation distance which is slightly greater than the minimum dimension of the dispersing elements.
Claims30
Apparatus for dispersion of solids in liquids comprising:
- (a) first and second relatively movable elements having respective first and second surfaces having a separation distance therebetween and arranged so as to define a dispersing volume therebetween;
- (b) a multiplicity of separate dispersing elements disposed within the dispersing volume, said dispersing elements having a cross-section that is circular in shape and having a diameter which is between 2 and 100 microns less than said separation distance;
- (c) means for supplying a solid suspended in liquid to the dispersing volume and for removing a dispersed form of said solid suspended in liquid from the dispersing volume after dispersing;
- and
- (d) means for effecting relative movement between said first and second surfaces whereby movement is imparted to said dispersing elements mainly by means of hydrodynamic forces created by said relative movement, thereby subjecting the solids to high shear forces operative to break up and disperse said solid in said liquid.
Apparatus for the dispersion of solids in liquids comprising:
- (a) first and second relatively movable elements having respective first and second surfaces arranged so as to define a dispersing volume therebetween;
- (b) a multiplicity of separate dispersing elements disposed within the dispersing volume;
- (c) means for effecting relative movement between said relatively movable surfaces and imparting movement along said first and second surfaces to said dispersing elements mainly by means of hydrodynamic forces created by the movement between said first and second relatively movable surfaces and causing said dispersing elements to be kept substantially non-contacting with said first and second movable surfaces, and
- (d) means for forcing a suspension of a solid in a liquid into spaces between the dispersing elements and the first and second relatively movable surfaces and subjecting the suspension to high shear forces operative to break up and disperse said solid in said liquid.
A method for the dispersion of solids in liquids comprising the steps of:
- (a) introducing a solid suspended in a liquid into a dispersing volume defined by first and second respective surfaces of first and second relative movable elements having a multiplicity of separate dispersing elements disposed within the dispersing volume;
- (b) effecting relative movement between said first and second relatively movable elements;
- and
- (c) forcing said suspension into spaces between the dispersing elements and the first and second relatively movable elements,
- wherein said dispersing elements are kept substantially non-contacting with said first and second movable surfaces and are set in motion along said surfaces mainly by hydrodynamic forces and the suspension is subjected to high shear forces operative to break up and disperse said solid in said liquid.
A method for dispersion of solids in liquids comprising the steps of:
- (a) introducing a solid suspended in a liquid into a volume defined by first and second relatively movable elements, said volume having disposed therein a multiplicity of separate dispersing elements, said dispersing elements having a crosssection that is circular in shape wherein said first and second movable elements are separated at said dispersing volume by a separation distance which is greater than the diameter of said cross-section and which is not more than 100 microns greater than said diameter;
- and
- (b) effecting relative movement between said first and second relatively movable elements and imparting movement to said dispersing elements relative to said first and second movable elements mainly by hydrodynamic forces created by the movement between said first and second movable elements thereby subjecting said solid to high shear forces operative to break up and disperse said solid in said liquid.
Dependencies are inferred from the claim text.