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US 4,908,136 AGranted
Method and apparatus for forming and ion-exchanging a filter cake
AssigneeMobil Oil Corporation
InventorsTai-sheng Chou, Thomas R. Kiliany, Jr.
Life of this patent
Estimating the term…
Abstract
Disclosed is an improved method and apparatus for creating a more uniform filter cake on a vacuum filter belt. A weir box for depositing a slurry on the filter belt has an outlet in the form of a plurality of slots spaced transversely of the filter belt with each slot being in the form of a truncated triangle with the base of the triangle being located closer to the filter belt than the truncated portion of the triangle.
Claims12
An apparatus for producing a filter cake comprising:
- a moving horizontal vacuum filter belt having at least one vacuum stage associated therewith;
- a first weir box positioned over said filter belt for depositing a slurry containing a mixture of solid particles onto said filter belt to produce a solid particle filter cake on said filter belt, said first weir box including a slurry outlet extending transversely of said filter belt through which said slurry passes as it is deposited on said filter belt, said slurry outlet including a plurality of cutouts spaced there along, each of which has the shape of a truncated triangle with the base of the triangle being closer to the filter belt than the truncated portion of the triangle;
- and
- means for providing a sufficient amount of slurry to said first weir box so that slurry passes onto said filter belt by flowing through said cutouts.
1 more element
A process for producing a filter cake comprising:
- moving a horizontal vacuum filter belt having at least one vacuum stage associated therewith;
- depositing a slurry containing a mixture of solid particles onto said filter belt through a first weir box to produce a solid particle filter cake on said filter belt, said first weir box including a slurry outlet extending transversely of said filter belt through which said slurry passes as it is deposited on said filter belt, said slurry outlet includinng a plurality of cutouts spaced there along, each of which has the shape of a truncated triangle with the base of the triangle being closer to the filter belt than the truncated portion of the triangle;
- and
- providing a sufficient amount of slurry to said first weir box so that slurry passes onto said filter belt by flowing through said cutouts.
1 more element
Dependencies are inferred from the claim text.