Abstract: In order to produce pellets or agglomerates in an economically feasible manner from clarified sludge which contains disease-causing bacteria and which is dewatered in a solid mantle worm-gear centrifuge (11) and is subsequently thermally dried in the centrifuge housing (14), and which satisfy the conditions of being hygienically unremarkable and also storage-stable, according to the invention it is proposed that the clarified sludge pellets (25), still hot or warm due to thermal clarified sludge drying, are held at their temperature in a sanitizing apparatus (26) for a dwell time of at least 10 min and thus sanitized and additionally dried.

Abstract: Dry flow, low compact, dust free, soluble granules of phosphoroamidothioates, preferably acephate, are produced by the process of 1) pre-mixing technical grade phosphoroamidothioate with specified adjuvants and other inert ingredients; 2) grinding to produce a ground product having a preferred particle size of 5 microns to 10 microns; 3) post-mixing; 4) granulating; 5) drying; 6) sizing to required length, preferably 1.5 to 3.0 mm; 7) and sieving to remove the fines to get the desired dust free soluble granule.

Abstract: This invention generally relates to the formulation of thermoplastic pellets from a combination of raw sludge material from a paper mill with thermoplastic material from post industrial or consumer sources. Initially, waste raw sludge material is transported via a conveyor to a dryer for removal of excess water. The waste thermoplastic material is preferably shredded into a desired size and transported to a densifier. The dried sludge is added to the densifier where the shredded thermoplastic material and dried sludge is suitably mixed with additive agents. The mixed sludge and shredded thermoplastic material is then transported to a grinder for grinding. The ground material is then transported to a hopper for introduction into an extruder. The ground combined material is then subjected to an extrusion process for the formulation of thermoplastic pellets having supplemental fibers to enhance the properties for use as starting material in an injection molding process.

Abstract: A method for making aerated concrete blocks includes dispensing materials for making aerated concrete into a mold and allowing the materials to rise and stiffen into a body. The body may be divided into an array of blocks which are then cured. At least one passageway may be formed in each block, such as by drilling. The drilling may include drilling a plurality of spaced apart passageways through each block, and each passageway may have a circular cylindrical shape. The passageways permit easier grasping by the mason, reduce the weight without significantly compromising strength, and facilitate positioning of blocks during construction of a wall to facilitate the placement of vertical reinforcing members in aligned passageways. The positioning of the passageways in each of the blocks may assist alignment of adjacent passageways, especially at wall corners.

Abstract: A method and a device for continuous forming of a mat of particle lignocellulosic material by means of a batching unit (12) with a distribution chamber (15) in connection with the manufacture of board. The material is deposited on a continuous forming web (16), and the width of the mat is controlled by means of laterally movable partition walls (30) in the distribution chamber (15). The main part of the material is deposited on the forming web (16) between the partition walls (30), and the partial amount of the particle material dropping outside the partition walls (30) is diverted by means (32) and discharged separately in the distribution chamber (15) and re-used in the mat forming, in that it is directly placed as a surface layer of the mat by distribution means (35).

Abstract: A multicolored, patterned floor covering is disclosed along with a method for its manufacture. The floor covering is made of a sheeting which has a first color, and a granular material dyed differently from the sheeting which is embedded in the sheeting along at least in the area of the top side. The sheeting and the granular material consist of cross-linkable, elastomeric materials, the granular material comprising particles which have at least two subregions dyed differently from each other and from the sheeting. The quantity and color of the fractions of each component as selected so that the mixed color resulting from an homogeneous intermixing of all the components contained in the floor covering agrees with the first color.

Abstract: For the manufacture of shaped parts (6) from ceramics, for example for dental-technical purposes, first of all a powdery ceramic raw material is compressed to form a ceramic green compact (4). The inner contour and/or the outer contour of the shaped parts (6) is then prepared by machining the ceramic green compact (4) by means of eroding methods, with the ceramic green compact (4) being embedded into a workpiece receiver (1) before the Machining by means of an embedding mass (3) which neither damages nor reacts chemically with the ceramic green compact (4). Subsequently, the machined ceramic green compact (4) is sintered to form a high-strength ceramic shaped part. A ceramic material which is almost shrinkage-free during sintering is preferably used.

Abstract: A fuel cell separator made of conductive material and resin wherein the conducive material is recycled from waste of fuel cell separators. The fuel cell separator consisting of conductive material and resin is made by using the waste of fuel cell separator consisting of conductive material and resin. The waste of fuel cell separator is pulverized to powder and is mixed with unused resin and, if necessary, supplemental conductive material, to establish powdered material. The powdered material is molded under the predetermined molding pressure and temperature. The fuel cell separators using the recycled material are comparable to fuel cell separators made solely from new material. In another aspect, a method of producing a fuel cell separator using the recycled material is disclosed.

Abstract: A process for forming particulate materials and binders into articles that are reusable after comminution, wherein the particulate materials are treated with a binder composition containing

Abstract: In a process for producing tiles, the waste material is ground to a reduced size, ferrous metals are removed from the waste material, the waste material is mixed with a binder to form a mixture after grinding, and the mixture is molded to form the tiles. The binder includes magnesium oxide, a regulating agent for accelerating the hardening of the magnesium oxide, a modifying agent selected from a water-reducing agent, a water-repellent agent, a water-resistant enhancing agent, and an active agent which can react with excess magnesium ions in the binder to form an insoluble magnesium salt, and a degrading agent for degrading heavy metal toxic substances contained in the waste material.

Abstract: In addition to a loading apparatus (10) for loading material through the upper mouth of the mold cavity (6), the unit comprises a blower device (30) for blowing air, means for moving said device while held a short distance from the upper surface of the material (B′) loaded into the mold cavity, such as to lift in a gauged manner a thin layer of material from the top thereof, and means (51, 55) for collecting the material lifted by the blower device (30), in order to remove it from the mold cavity. In particular, the blower device (30) comprises a relatively narrow, long blowing port (31) arranged to emit an air jet in the form of a thin sheet extending in a horizontal direction, and means (33, 34) for feeding compressed air to said blowing port (31), which is moved while maintained a short distance from the upper surface of the material (B′) loaded into the mold cavity (6) in order to lift a thin gauged layer of material.

Abstract: To replenish a powder supply section (40) with a powder material, a powder-material reservoir (30) is mounted in a reservoir placement section (43) located on the upper side of the powder supply section (40). After the completion of a modeling operation on a modeling stage (62) in a modeling mechanism (60), the modeling stage (62) is lowered and a carrier mechanism (65) operates to carry a mesh tray (9) and a three-dimensional (3D) object (91) on the modeling stage (62) to a treatment chamber (72). In the treatment chamber (72), removal of unbound powder adhering to the 3D object (91) and post-processing are performed automatically. Such a configuration allows automatic fabrication of a 3D object of high binding strength without scattering the powder material therearound.

Abstract: The present invention provides a method and apparatus for providing zero-defect pressed articles with minimal, remote operator intervention. The apparatus includes a programmable logic controller, controlling a powder feeder portion having a dump bucket which is weighed by an electronic scale. Desired weights of powder in the dump bucket are dumped to a first location and conveyed to the press. Non-desired weights of powder in the dump bucket are dumped to a second location and may be recycled. The invention provides for precise weighing of powder and avoids waste of powder in the event of improper powder dispensing and provides for complete automatic logging of production and testing data, and rejection of defective articles, avoiding the need to manually test each produced article. This method and apparatus are particularly useful in the pressing of energetic materials into pellets or casings, where manual operations are restricted for safety reasons.

Abstract: A sealing member is produced from form-pressed boron nitride powder, while adding an inorganic or organic binding agent. Such boron nitride powder is obtained during the machining of boron nitride blocks composed of hexagonal boron nitride. This powder can be fractionated according to particle size and the particle size desired for manufacturing the sealing member can be separated out.

Abstract: A method of converting stripped roofing material into a useful product comprising feeding roofing material removed during repair or reroofing of a building roof into a shredder introducing particles of material from said shredder together with particles of thermoplastic material and a particulate filler material into a high intensity mixer to form a batch of material to be mixed, intensely mixing said batch of material to produce a heated mass of hot particles of roofing material and filler material coated with molten thermoplastic, then molding said heated mass under pressure into a desired end product. The invention also includes products produced utilizing said stripped roofing material.