Mechanical filtering process for dehydrating muds and filter press implementing said process
AssigneeS.P. Srl
InventorUgo Salvato
Life of this patent
Estimating the term…
Abstract
A mechanical filtering process for dehydrating muds includes the step of introducing a mass of mud to be dehydrated between mechanical filtering porous plates and the step of applying a compression force on the mass of mud by the porous plates, thus causing a liquid fraction to be removed from the mass of mud, the liquid fraction being filtered through the porous plates while the solid fraction remains between the plates. The compression force is combined with a twisting moment on the mass of mud by the porous plates, which causes the additional removal of a residual liquid fraction from the mass of mud.
Claims10
A mechanical filtering process for dehydrating muds, comprising the steps of:
- introducing a mass of mud to be dehydrated between porous plates for mechanical filtering;
- and
- applying a compression force on the mass of mud by said porous plates to cause removal of a liquid fraction, which is filtered through the porous plates from the mass of mud, while a solid fraction remains between the porous plates,
- wherein the step of applying said compression force comprises applying said compression force combined with at least one twisting moment on said mass of mud by said porous plates, thereby causing an additional removal of a residual liquid fraction from the mass of mud.
A filter press (1) for mechanical dehydration of muds, comprising:
- a frame (11);
- at least one pair (2a, 2b) of facing porous plates (21, 22) mounted on said frame (11) and defining, within at least one tubular body (24), a closed space (23) configured to receive and contain a mass of mud to be dehydrated, wherein each plate (21, 22) comprises filtering or draining fabrics configured to drain a liquid fraction contained in the mass of mud, said plates (21, 22) being arranged to translate in a direction (X) in relation to each other and to said tubular body (24) in order to increase/decrease their mutual distance;
- at least one duct (4) configured to convey the mass of mud to be dehydrated into said closed space (23) between said plates (21, 22);
- and
- mechanical members (3) suited to move one or both of said plates (21, 22), said mechanical members comprising fluid-operated cylinders (31, 32) acting directly or indirectly on one or both of said plates (21, 22) of each pair (2a, 2b) in order to move said plates (21, 22) near to or away from each other in said direction (X),
- wherein said mechanical members (3) are configured to rotate at least one of said plates (21, 22) of said pair (2a, 2b) on a plane where the plates (21, 22) lie, around an axis (Z) that is substantially parallel to said direction (X) of the facing plates (21, 22).
Dependencies are inferred from the claim text.