Abstract: In order to create a rotating drum filter with a filter medium that is extremely fine-meshed and nonetheless has a long service life, whereby the filter medium need not be completely replaced given localized damage thereto, it is inventively proposed that the filter medium be formed of a composite element body with at least two metallic layers, namely with an extremely finely porous, outer metal layer or, respectively, stainless steel fabric that is firmly applied onto at least one metallic supporting grid layer or, respectively, onto a stainless steel fabric layer that is coarse-meshed compared thereto.

Abstract: In order to create a thrust grating cooler whose system for delivering the cooling air to the individually aerated, reciprocally movable grating plate carriers manages without flexible cooling air hose conduits that are susceptible to wear, at least one cooling air channel is provided that moves together with the C-push frame which carries the movable grating plate carriers. The cooling air channel is mounted at the underside of the C-push frame either transversely or parallel with respect to the longitudinal axis of the cooler. The air entry end of the cooling air channel that is co-moved together with the C-push frame is connected to a stationary cooling air delivery nozzle by means of a seal. A plurality of rigid connecting channels branch off from the cooling air channel to the movable grating plate carriers and supply both the carriers and the movable perforated grating plates that are secured thereon with cooling air.

Abstract: In order to create a grate plate design for a thrust grating cooler for cooling hot material such as, for example, cement clinker, this grate plate design has troughs at its upper side for accepting and retaining cool material for the purpose of protecting the grate plate against thermal overload, whereby these troughs are to be supplied with cooling air via cooling air channels arranged therebetween and via air exit slots without the risk of blockage thereof. A grate plate is provided wherein a plurality of cooling air channels that extend up to the upper side of the grate plates and limit the troughs from one another are arranged in the grate plate member parallel to the longitudinal axis of the grate plates, and whereby the partitions between the air channels and the troughs comprise air exit slots proceeding parallel to the longitudinal axis of the plates which are arranged immediately above the bottom plate of the grate plate.

Abstract: An energy-saving effective sifter used in interparticle crushing of brittle charging stock such as cement clinker in the nip of a high pressure roller press including a dynamic sifter having a rotating rod basket and laterally preceding the rotary rod basket sifter by a fluidized bed pre-sifting chamber having an admission opening at the top with a chamber defined between opposed porous walls to provide a pre-sifting zone with the walls formed by angularly adjustable baffles in one form, and passing air across the zone toward the rotary rod basket, removing a coarse grain fraction below the pre-sifting chamber, removing a medium grain fraction from beneath the rotary rod basket and removing fine material axially of the rotary rod basket passing the medium grain and coarse grain fraction into an interparticle crushing high pressure roller press having a nip pressure in excess of 2 t/cm of roller length, mixing the medium grain fraction and coarse grain fraction with a pre-comminuted pulverulent material such a

Abstract: A high pressure roller press for interparticle crushing of material including opposed crushing rollers with at least one roller being movable, a gate controlled material feed to the nip of the rollers, means measuring the nip width by measuring the distance between bearings of the rollers, means measuring the nip force by measuring the hydraulic pressure applied to the movable roller to obtain nip force, a comparator receiving signals of nip width and nip force and having an output to maintain a linear relationship between nip width and nip force and controlling the feed to the nip and the nip width to maintain the relationship.

Abstract: An apparatus is provided for the wet-mechanical separation of solids within a parting liquid into floats and sinks according to their density which includes a container rotatable about an axis provided with at least one opening for the admission of said solids to be separated and at least one separate opening for the discharge of the sinks, the floats and the parting liquid. A screw conveyor for separating the solids is arranged in the container. The screw conveyor is rotatable about the container axis with one set of helices for engaging the floats and another set of helices for engaging the sinks. A diaphragm plate is arranged axially on the screw conveyor between the admission opening for the solids to be separated and the discharge opening for the sinks such that one part of the screw conveyor conveys the sinks to the sinks discharge opening with its helices and another part of the screw conveyor conveys the floats to the floats discharge opening with its helices.

Abstract: A cellular rotary sluice for discharging material from a pressure vessel including a cell housing rotatable about a vertical axis with top and bottom stationary sealing plates and rotatable inner and outer vertical edge members with the edge members provided with wear facing at a top and bottom edge and with wear inserts in the top and bottom plates, a seal outside of the wear locations formed either by a packing seal within a ring or an O-ring, and in one form a space which is pressurized preventing the passing of material into and past the wear locations.

Abstract: A method and a device for the optimization of the efficiency and/or exhaust-gas quality of lean burning Otto-cycle gas motors or gas motors with pilot-injection ignition. The fuel-gas quality is measured by a measuring device and the measured value is fed to an electronic controller which in turn controls the oxygen concentration in the exhaust gas and/or the timing of ignition or pilot injection.

Abstract: An apparatus for separating solids and liquid mixtures such as to form concentrated sludge including a solid bowl worm centrifuge which has a slurry admission inlet and outlets for a liquid fraction and for concentrated sludge. A detector for detecting the consistency of the sludge leaving the centrifuge, a conduit for bypassing slurry being supplied from a source to the centrifuge and a control valve for controlling the amount bypassed as a function of the consistency of the sludge fraction and in some instances also a conduit for feeding a dilution liquid to the sludge leaving the centrifuge.

Abstract: A method and apparatus for high temperature treatment of particulate metal ore concentrate solids with a cyclone having a tangentially positioned burner directing a jet flame into the cyclone, an ore injecting nozzle positioned to inject a stream of ore with oxygen containing gas into the jet flame of the burner at a location at least one-third of the travel of the flame and into the hottest region thereof so that the particles are melted and do not abrasively impact the walls of the cyclone in an unmelted stage.

Abstract: A connecting passageway is provided between a cooling air fan and an enclosure for an enclosed belt drive of an internal-combustion engine, whereby the belt drive is cooled by a cool-air stream diverted from the cooing fan.The connecting passageway is made as an air shaft, which is formed largely from existing parts of the internal-combustion engine and, in addition, is arranged in such a fashion that it has no parts protruding beyond the outer counter of the engine.

Abstract: A tine for agricultural harvesters such as supported on a rotating component for conveying stalks with the tine being a one piece structure having a leg or tine portion and a supporting base or eyelet portion, the tine receives a lateral load from one side and the eyelet is slotted at the opposite side with an enlargement at the slot accommodating the passage of a bolt extending radially to attach to a support, a semi-cylindrical boss extending axially on the projection at the side of the leg and extending into a semi-circular recess and held therein by the bolt for providing support for the tine unit.

Abstract: An improved roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing including embedding a plurality of spaced wear-resistant surface members in the pressing surface of the roll which are of a material harder than the material of the roll surface surrounding the inserts and by varying the size and number and material properties of the embedded pieces, the wear of the press roll is matched to the materials to be comminuted to minimize wear and to match the wear profile along the roll with extended pressing use.

Abstract: A high pressure roller press for interparticle crushing and particularly a bearing support for one of the rolls having force means for the bearing housings urging the roll to obtain high pressure capable of interparticle crushing in the nip and a support bearing for one end of the roll having radial arms extending above and below the nip and guided in a slide permitting movement toward or away from the nip with a stepped bearing at one end of the roll with one bearing being a thrust bearing preventing axial movement and the other end of the roll being supported in a bearing permitting axial movement of the roll end. A rubber pad is located between each bearing and a force applying piston to allow tilting of the bearing and a frusto-conical link permits the pad to be larger than the piston.

Abstract: A worm centrifuge having a rotatable drum and a rotatable worm therein each independently rotatable at different speeds, adjustable weir plates at one end on the drum adjacent liquid fraction discharge openings, a ring seal including first and second rings in the region of the liquid discharge openings with one ring on the worm and the other ring on the drum, annular anti-wear protection segments on the seal ring on the auger with the segments on carriers which are removable through an end wall of the drum for replacement and for assimilating wear of material flowing through the liquid discharge openings wherein the wear on the seal ring rotating with the conveyor worm is avoided due to the anti-wear protection segments detachably joined to the seal ring.

Abstract: A method and mechanism for harvesting standing crops for a combine such as rows on corn of sunflowers including flattening the stalks and removing the tops, first encountering the stalks with leading separating devices fashioned as ships for separating the crop plants arranged in rows, engaging the stalks with a rotary shaft and with a draw-in drum having dogs on the surface, engaging the plants with a reaper element and then with a deflection shaft all for flattening the plants and removing the tops and conveying the tops laterally inwardly with an auger to pass to a conveying channel to be transported to a harvesting combine.

Abstract: A centrifugal separator for the separation a slurry into a light phase fraction and a heavy phase fraction including a rotatable shell having a cylindrical portion and a conical portion with a rotatable auger therein and a light phase opening at one end and a heavy phase opening at a second end sized to throttle the flow of light phase liquid and heavy phase liquid and sized in the cross-sectional area ratio of A/B so that the discharge from the separator will continue to be in the ratio of A/B regardless of throughput and in one form the separator has a second heavy phase opening in the cylindrical portion and in another form, an annular barrier vane on the auger blocking flow of liquid fraction toward the heavy fraction opening.

Abstract: A method for operating and improving the throughput and efficiency of a worm centrifuge by introducing, at a controlled frequency, successive pressure surges into the concentrated sludge fraction within the bowl separator preceding the solids discharge opening whereby the pulse frequency and the level of pressure are controllable and can be controlled as a function of the sludge fraction throughput through the separator.

Abstract: A method and apparatus for the separation of a slurry into a light fraction and a heavier fraction with a rotatable drum separator having a rotatable worm therein driven independently of the drum with an inlet for the slurry into the drum, an outlet for a liquid fraction, and outlet openings adjacent one end of the drum such as in the conical portion for the removal of the heavier abrasive sludge fraction with the openings extending at an angle opposite the direction of rotation of the drum and having wear-resistant inserts in the opening attached to webs beside the openings and removable by being pivoted out through the openings.

Abstract: A magnet system such as for magnetic separators including uniformly magnetized arcuately positioned magnet blocks, the magnetization direction of the blocks being differently aligned relative to one another and defined according to a predetermined mathematical equation wherein the blocks are arranged in an arcuate path about a center and the magnetic orientation of the blocks is arranged according to the formula .psi..sub.1 =-n.phi..sub.1 in one arrangement.