Abstract: A dryer for flat materials, in particular panels, films or sheets, wherein a porous gas-permeable metal plate is provided for arranging at a distance from the flat material which is to be dried, wherein an arrangement is provided for delivering a gaseous fluid through the metal plate, and wherein the metal plate is of a metal foam.

Abstract: A double belt press having a first, lower circulating plastic belt and a second, upper circulating plastic belt. The plastic belts have a first, low flexural strength, and a product gap is formed between facing strands of the plastic belts for forming a plate-like product. A first circulating lower steel belt and a second circulating upper steel belt are provided and have a second flexural strength which is high in comparison to the flexural strength of the plastic belts. A forming section is formed between the facing strands of the steel belts, which forms part of the product gap. The first, lower steel belt runs parallel and bears against a rear face of the first plastic belt in the forming section during operation, and the second upper steel belt runs parallel and bears against a rear face of the second plastic belt in the forming section during operation.

Abstract: A double belt press having a first, lower circulating plastic belt and a second, upper circulating plastic belt. The plastic belts have a first, low flexural strength, and a product gap is formed between facing strands of the plastic belts for forming a plate-like product. A first circulating lower steel belt and a second circulating upper steel belt are provided and have a second flexural strength which is high in comparison to the flexural strength of the plastic belts. A forming section is formed between the facing strands of the steel belts, which forms part of the product gap. The first, lower steel belt runs parallel and bears against a rear face of the first plastic belt in the forming section during operation, and the second upper steel belt runs parallel and bears against a rear face of the second plastic belt in the forming section during operation.

Abstract: A method for producing tablets containing ammonium nitrate, including dripping a product melt containing ammonium nitrate with a drop former having a rotating, pierced drum and a nozzle strip contacting an inner face of the pierced drum, so that the product melt is pressed through openings of the pierced drum. The method additionally includes placing the product drops on a circulating cooling conveyor belt, and solidifying the product drops during the transport on the cooling conveyor belt by cooling and removing the solidified product drops from the cooling conveyor belt.

Abstract: A method for extracting hydrocarbon compounds, especially crude oil, from underground oil sands deposits, including the following steps: at least two parallel boring sections are created in the oil sands deposits; at least some areas of the boring sections are filled with an explosive material; the explosive material is ignited in order to enlarge the boring sections; the combustible material is ignited in at least one of the boring sections in order to convert the hydrocarbon compounds in the oil sands deposit into a liquid and/or gaseous state; the hydrocarbon compounds in a liquid and/or gaseous state are collected; and auxiliary substances such as water and atmospheric oxygen are optionally introduced and removed for desired material conversions for the refining of hydrocarbons.

Abstract: A method for producing tablets containing ammonium nitrate, including dripping a product melt containing ammonium nitrate with a drop former having a rotating, pierced drum and a nozzle strip contacting an inner face of the pierced drum, so that the product melt is pressed through openings of the pierced drum. The method additionally includes placing the product drops on a circulating cooling conveyor belt, and solidifying the product drops during the transport on the cooling conveyor belt by cooling and removing the solidified product drops from the cooling conveyor belt.

Abstract: A method for producing tables made of mixtures of a plurality of materials, and a method for producing a sulfurous fertilizer. A method for producing tablets made of mixtures of a plurality of materials, particularly urea mixtures, having the following steps:—producing a liquid melt of a first material,—adding at least one further material in solid or liquid form to the melt for producing a mixture,—output of drops of the mixture onto a steel belt by means of a drop former having a rotating, perforated outer drum,—solidification of the drops of the mixture on the steel belt into tablets, wherein the at least one additional material is mixed into the liquid melt in liquid form immediately before the drop former or into the liquid melt in solid. form upstream of a two-stage heated grinding and mixing unit.

Abstract: A device for expelling drops of a flowable product. The invention relates to a device for expelling drops of a flowable product, comprising a rotating outer drum and a feed channel for the product to be expelled extending into the outer drum, wherein the outer drum comprises passage openings on the circumference thereof, through which the product to be expelled runs from the feed channel and then exits in droplet shape. According to the invention, at least one outer circumference of the outer drum is provided with a coating that reduces wetting with the product to be tabletted compared to a base material of the outer drum. For example, the invention can be used for tabletting flowable products.

Abstract: 1.1 The invention relates to a method for producing tables made of mixtures of a plurality of materials, and a method for producing a sulfurous fertilizer. 2.1. The invention relates to a method for producing tablets made of mixtures of a plurality of materials, particularly urea mixtures, having the following steps:—producing a liquid melt of a first material,—adding at least one further material in solid or liquid form to the melt for producing a mixture,—output of drops of the mixture onto a steel belt by means of a drop former having a rotating, perforated outer drum,—solidification of the drops of the mixture on the steel belt into tablets, wherein the at least one additional material is mixed into the liquid melt in liquid form immediately before the drop former or into the liquid melt in solid form upstream of a two-stage heated grinding and mixing unit. 2.2. Use for producing fertilizer, for example.

Abstract: An extruder for extruding a flowable substance in the form of droplets includes a perforated rotating drum, and a nozzle strip arranged inside the drum at a lower portion thereof in facing relationship to an inner circumference of the drum. A cantilevered restricting strip is disposed within a flow channel of the nozzle strip to form a flow-restricting slot for apportioning and calming the flowing substance.

Abstract: A belt drop shaper forms a viscous substance into the shape of drops. The drop shaper includes a container for the substance and a perforated steel belt pressing against a bottom surface of the container. The bottom surface includes at least one discharge opening that is periodically opened by perforations in the belt to enable drops of the substance to fall on a transport conveyor. A heater unit is provided, e.g., in a support drum around which the steel belt travels, to heat the steel belt at a location upstream of the discharge opening.

Abstract: An endless conveyor belt has a thermal fluid (gas or liquid) sprayed against a portion of its underside to define a temperature-controlled region of the belt. To prevent the lateral escape of the thermal fluid, stationary seals are provided which contact the belt underside adjacent respective longitudinal edges of the belt. To keep the seals in continuous contact with the belt, despite warping that might occur, the seals carry magnets, and the belt is formed of a magnetizable material. Hence, the magnets force the belt and seals together.

Abstract: An endless conveyor belt has a thermal fluid (gas or liquid) sprayed against a portion of its underside to define a temperature-controlled region of the belt. To prevent the lateral escape of the thermal fluid, stationary seals are provided which contact the belt underside adjacent respective longitudinal edges of the belt. To keep the seals in continuous contact with the belt, despite warping that might occur, the seals carry magnets, and the belt is formed of a magnetizable material. Hence, the magnets force the belt and seals together.

Abstract: A method for producing and coating melt portions includes two sheet strips, which form coating material layers, being continually fed. The melt portions embedded between the sheet strips are cooled and calibrated according to their thickness. The sheet strips are longitudinally and transversely separated in the region of their connection points such that the melt portions become isolated and the sheet strips are connected to each other such that each melt portion is embraced tightly.

Abstract: A method for producing and coating melt portions includes two sheet strips, which form coating material layers, being continually fed. The melt portions embedded between the sheet strips are cooled and calibrated according to their thickness. The sheet strips are longitudinally and transversely separated in the region of their connection points such that the melt portions become isolated and the sheet strips are connected to each other such that each melt portion is embraced tightly.

Abstract: A device is disclosed for improved coating of small solid particles with a melt of a material which solidifies at room temperature. The device includes a rotatable turbine body having two rotatable disk parts. An annular gap is provided between the rotatable disk parts which allows the melt to emerge to coat the solid particles in an annular space. The two rotatable disk parts are connected by a fine-pitch thread which allows the size of the annular gap to be adjusted by rotating one of the disks relative to the other. Rotation of one of the disks is performed from the exterior of the device by an adjusting pin which eliminates the need to dismantle the device to adjust the flow of the coating material.

Abstract: A device is disclosed for improved coating of small solid particles with a melt of a material which solidifies at room temperature. The device includes a rotatable turbine body and conduits for supplying solid particles and molten material to the rotatable turbine body. The turbine body is rotated by a hollow drive shaft and is provided with a series of heating conduits extending through the drive shaft and the turbine body for heating the turbine body. The turbine body can be heated to a controlled temperature to maintain the molten material at a desired temperature by varying the temperature of a heating agent which is supplied through the heating conduits.

Abstract: An endlessly driven belt extends around a drum and carries a product. Removal of the product from the belt is effected by a doctor blade which bears against a portion of the belt traversing the drum. The doctor blade is fixedly connected to the drum for movement therewith to remain parallel to a surface of the belt. The doctor blade is attached to shafts that are mounted in respective bearing assemblies that permit movement of the shafts along their mutually aligned axes. The doctor blade can be positioned between upstanding ribs formed on the belt whereby the ribs can displace the doctor blade in response to pivoting of the drum in order to keep the doctor blade parallel to the axis of the drum.

Abstract: A melt is converted into pieces by being converted to individual quantities that are dropped onto a cooling surface. Disposed above the cooling surface is a hood having a suction outlet for conducting waste air to a cleaner. Disposed in the hood upstream of the suction outlet is an arrangement of surfaces defining a serpentine flow path for the waste air so that a vaporous component of the waste air crystallizes on the surfaces. The surfaces are formed by plates mounted on a common transport carrier which periodically moves the plates against a scraper for scraping off the crystallized material. Alternately, the surfaces can be defined by endless belts which move against scrapers.