Method of and apparatus for filtering a slurry
AssigneeSteetley Quarry Products Limited
InventorKenneth W. Pearce
Life of this patent
Estimating the term…
Abstract
Filter cake produced from a slurry is compressed in an enclosure (6) having a pair of opposed flexible walls (5) at least one of which is constituted by a filter and drainage medium. The filter cake is cyclically deformed while under compression with the filter cake supported at least one position (14, 52) within its periphery whereby the unsupported parts of the filter cake are cyclically deformed about the periphery and the position or positions of support. All parts of the filter cake are thus subjected to substantially uniform bending whereby drying of the filter cake is improved.
Claims19
A method of filtering a slurry, comprising confining filter cake produced from the slurry in an enclosure having a pair of opposed walls at least one of which is flexible and at least one of which is constituted by a filter and drainage medium;
- compressing the filter cake in the enclosure;
- and cyclically deforming the filter cake while under compression in the enclosure by acting on at least one of the walls of the enclosure while supporting the compressed filter cake at a plurality of discrete positions within its periphery whereby the unsupported parts of the filter cake are cyclically deformed about the periphery and said discrete positions of support of the filter cake.
Apparatus for filtering a slurry, comprising an enclosure having a pair of opposed walls at least one of which is flexible and at least one of which is constituted by a filter and drainage medium;
- means to maintain filter cake produced from the slurry under compression in the enclosure;
- means to support the compressed filter cake at a plurality of discrete positions within its periphery;
- and means for cyclically deforming the filter cake while under compression in the enclosure by acting on at least one of the walls of the enclosure whereby the unsupported parts of the filter cake are cyclically deformed about the periphery and said discrete postions of support of the filter cake.
Dependencies are inferred from the claim text.