Krauss-maffei Aktiengesellschaft

Saarbergwerke Aktiengesellschaft

Drm. Dr. Muller Ag

Zuricher; Beuteltuchfabrik Ag

Ferrum Ag

Werner Stahl

Franz Krappmann

Bernhard Richter

Ivo Schumacher

Franz Alstetter

Uwe Breuer

Werner Padberg

Walter Stocker

Norbert Gros

Hans Schuster

Patrick A Muller

Franz Koch

Sebastian Stahl

Gernot Busch

Sandro MOL Schneider

Filter element and method of filtration

Procedure for the draining of sludge

The invention relates to an improved process and apparatus to produce a filter cake formed by retained solids collected on a filter cloth during filtering. Accordingly, the filter cake is sub-divided into a plurality of filter cake elements which are kept separate from each other at predetermined distances. Further, impermeable zones on the filter cloth are formed around the filter cake elements. The filter cake elements and the impermeable zones are of a size that the filter cake elements can freely contract in any plane without cracking, while the filter cloth between the filter cake elements is covered by the impermeable zones.

Process and apparatus for the formation of a filter cake

A disk-filter apparatus in which a filter disk is rotatable about a horizontal axis and lies substantially in a vertical plane to collect filter cakes on opposite sides of the disk. The filter cakes are each treated with a liquid from an array of ducts parallel to the filter cake and from which the liquid is distributed onto the filter cake. The ducts of each array are supplied at least in part through overflow boxes or weirs to control the pressure. The number of openings, spacing of the ducts and opening size are all selected to obtain the most homogeneous distribution of liquid onto the filter cakes that is possible.

Apparatus for the treatment of a filter cake with a liquid on a movable

A rotary filter has a pressure vessel and a rotor from which a plurality of filter cells are suspended from outer portions of the rotor so that they clear a conveyor located proximal to the axis of rotation and upon which the filter cake is removed. Conduits are connected to the filter cells from a single distribution head for initially evacuating the cells in the filter stage and thereafter pressurizing the cells to dislodge the filter cake while the vessel remains under pressure. The filter cells can have the filter surfaces extending generally in axial planes or in axially spaced relationship in planes wherein a plurality of angularly spaced filters extend generally radially from respective filtrate conduits running axially along the outer part of the rotor.

Pressurizable rotary filter

A multi-disk rotary filter in which a plurality of disks on a common shaft are partly immersed in a trough containing the suspension to be filtered and each of the filter disks is formed with a plurality of filter sectors or cells each connected to a control disk through which the filtrate is evacuated. According to the invention, each disk is formed with a cell carrier with a radial passage communicating with each sector and merging into an axial passage. The axially extending passages of at least some of the disks are formed at least in part by straight tube sections outwardly of the shaft.

Rotary filter

Growing community of inventors

Landau, Germany

Werner Stahl