Abstract: Sorting device and method for sorting objects. The device includes a chute on which objects are movable in a conveying direction by an acting gravitational force. The chute has a cutout measuring area and a LIBS laser is positioned adjacent the cutout for spectroscopic measurement of objects moving through the cutout. A discharger for sorting out a first fraction of objects is provided along a discharge direction and below the chute and/or an imaginary extension of the chute. A control device is provided for controlling the discharger depending on measurement results of the LIBS laser. A further discharger is provided for sorting out a second fraction of objects along a further discharge direction. The further discharger is arranged above the chute and/or the imaginary extension of the chute and the control device controls the further discharger depending on the measurement results of the LIBS laser.

Abstract: A screening device having a first oscillating body with first cross members and a second oscillating body with second cross members. The first and second cross members are arranged alternately to a screening surface and each includes clamping devices via which screen linings forming the screening surface are each clamped between a first cross member and a second cross member. The first and second oscillating bodies are set in oscillation relative to one another to alternately compress and expand the screen linings. The first oscillating body includes a first pair of push rods on which the first cross members are arranged and the second oscillating body includes a second pair of push rods on which the second cross members are arranged. A stationary support structure accommodates the two oscillating bodies. The first and second oscillating bodies are set in oscillation relative to the stationary support structure.

Abstract: Sorting device and method for sorting objects. The device includes a chute on which objects are movable in a conveying direction by an acting gravitational force. The chute has a cutout measuring area and a LIBS laser is positioned adjacent the cutout for spectroscopic measurement of objects moving through the cutout. A discharger for sorting out a first fraction of objects is provided along a discharge direction and below the chute and/or an imaginary extension of the chute. A control device is provided for controlling the discharger depending on measurement results of the LIBS laser. A further discharger is provided for sorting out a second fraction of objects along a further discharge direction. The further discharger is arranged above the chute and/or the imaginary extension of the chute and the control device controls the further discharger depending on the measurement results of the LIBS laser.

Abstract: A method for heat treatment of a grain-shaped feed material uses a calcination device in order to remove carbonate or water of crystallization from the feed material. In order to continuously check the quality of the heat treatment process, the bulk density of the heat-treated material is measured continuously, wherein upon detection of a deviation of the determined bulk density from the at least one desired bulk density at least one heat treatment parameter of the heat treatment is adapted automatically or manually.

Abstract: A device for producing expanded granulated material from grains of sand with an expanding agent includes a furnace with a furnace shaft, which has upper and lower ends. A conveying section extends between the ends and passes through separately-arranged heating zones in a conveying direction. At least one feeder charges at least the unexpanded material into the furnace shaft at one end toward the other end. At least one rotatable shaft insert is arranged at least in sections in the furnace shaft and has at least one scraper blade forming with an inner wall of the furnace shaft at least one gap having a gap width and being designed, during rotation of the at least one shaft insert in an operating state of the device, to remove caking on the inner wall at least in sections if a thickness of the caking is greater than the respective gap width.

Abstract: A device for producing expanded granulated material from mineral material in the form of grains of sand with an expanding agent includes a furnace with a furnace shaft, having an upper end and a lower end. A conveying section extends between the two ends and passes through a number of heating zones arranged separately from one another in a conveying direction. The device also includes at least one feeder in order to charge at least the unexpanded material into the furnace shaft at one of the two ends in the direction of the other of the two ends. At least one directing element is at least partly arranged in the furnace shaft and forms a gap with an inner wall of the furnace shaft, at least in the region of one of the two ends. The at least one feeder is designed for charging the material into the gap.

Abstract: Sorting apparatus including a chute, on which objects are moved in succession by gravitational force, the chute having a cutout with a measuring region. An LIBS laser device is arranged adjacent to the cutout to carry out spectroscopic measurement on the moving objects. A separating device separates out certain objects, and a control device controls and/or adjusts the separating device as a function of the measurement results of the LIBS laser device. The chute includes at least a first portion, through which the objects can be moved first and centered normal to the conveying direction by gravitational force, and a second portion that is flat. The cutout includes the measuring region is arranged in the second portion.

Abstract: A bitumen product including bitumen and a mineral filler. In order to reduce the specific weight of the bitumen product while allowing sufficient scaling effect, the mineral filler contains expanded perlite grains, the expanded perlite grains having a closed-cell surface, and the expanded perlite grains having a closed-cell surface are not ground.

Abstract: The invention relates to a method for producing an expanded granular material from sand grain-like mineral material which comprises a bound blowing agent, for example for producing an expanded granular material from perlite sand, wherein the sand grain-like mineral material is introduced into a feed opening at one end of a furnace shaft, conveyed along a thermal treatment section in a conveying direction, preferably by force of gravity, heated to a critical temperature while being conveyed through the thermal treatment section, starting at which temperature the sand grain-like mineral material plasticizes and begins to expand as a result of the blowing agent, and the expanded granular material is discharged at another end of the furnace shaft.

Abstract: A screening device having a first oscillating body with first cross members and a second oscillating body with second cross members. The first and second cross members are arranged alternately to a screening surface and each includes clamping devices via which screen linings forming the screening surface are each clamped between a first cross member and a second cross member. The first and second oscillating bodies are set in oscillation relative to one another to alternately compress and expand the screen linings. The first oscillating body includes a first pair of push rods on which the first cross members are arranged and the second oscillating body includes a second pair of push rods on which the second cross members are arranged. A stationary support structure accommodates the two oscillating bodies. The first and second oscillating bodies are set in oscillation relative to the stationary support structure.

Abstract: Sorting apparatus including a chute, on which objects are moved in succession by gravitational force, the chute having a cutout with a measuring region. An LIBS laser device is arranged adjacent to the cutout to carry out spectroscopic measurement on the moving objects. A separating device separates out certain objects, and a control device controls and/or adjusts the separating device as a function of the measurement results of the LIBS laser device. The chute includes at least a first portion, through which the objects can be moved first and centered normal to the conveying direction by gravitational force, and a second portion that is flat. The cutout includes the measuring region is arranged in the second portion.

Abstract: A method for heat treatment of a grain-shaped feed material using a calcination device to remove carbonate or water of crystallization from the feed material are provided. To continuously check the quality of the heat treatment process, the bulk density of the heat-treated material is measured continuously, wherein upon detection of a deviation of the determined bulk density from the at least one desired bulk density at least one heat treatment parameter of the heat treatment is adapted automatically or manually.

Abstract: The invention relates to a method for producing an expanded granulate (29) made of a sand grain-shaped mineral material (1) using a propellant; wherein the material (1) is fed to a substantially upright furnace (2); wherein the material (1) is conveyed along a conveying path (4) through a plurality of vertically separated healing zones (5) in a furnace shaft (3) of the furnace (2), wherein each heating zone (5) can be heated by at least one independently controllable heating element (6); wherein the material (1) is heated to a critical temperature at which the surfaces (7) of the sand grains (1) become plastic and the sand grains (1) are expanded through the propellant.

Abstract: A method for producing an expanded granulate made of a sand grain-shaped mineral material uses a propellant. The material is transported along a transport path through multiple heating zones in a furnace shaft, heated to a critical temperature at which the surfaces of the sand grains plasticize, and the sand grains are expanded based on the propellant. The material is fed from the bottom together with an amount of air; the material is transported from the bottom to the top along the transport path by the air quantity which flows from the bottom to the top in the furnace shaft and the sand grains are expanded in the upper half of the transport path. The material is heated such that the material immediately prior to entering into the furnace shaft is at a material entry temperature lower than the critical temperature and higher than the ambient temperature.

Abstract: A method and a sorting plant for sorting out mineral-containing objects car plastic objects from a single layer material stream is shown. Here it is provided that objects (12) of the material stream are irradiated with stimulating light and the resulting fluorescent light is detected in the form of an image of the fluorescent points, the objects of the material stream are irradiated with object detection light outside the fluorescent light, and the transmitted light after passage between the objects or the reflected light of the objects is detected in the form of an image of the individual objects, an object is then defined as containing at least one specific mineral or one specific plastic if the fluorescent light of said object lies in a predetermined intensity range for at least one predetermined wavelength range, and the so defined objects are separated from other objects of the material stream.

Abstract: The invention relates to a method for the expansion of sand grain-shaped raw material (1) in which the raw material (1) drops downwards through a substantially vertical heated shaft (4) provided with means (2) for forming a temperature profile (3), in which a shaft flow (5) prevails wherein the raw material (1) expands as a result of heat transfer in the shaft (4) to form expanded granulate (6) and the granulate formed (6) is passed into a pneumatic conveying line (7) with a conveying flow (8) for further transport. In order to continuously check the quality of the expansion process, the bulk density of the expanded granulate (6) is measured continuously, wherein upon detecting a deviation from at least one defined bulk density, the temperature profile (3) in the shaft (4) is adapted automatically or manually and/or the feeding of raw material (1) into the shaft (4) is reduced automatically or manually.

Abstract: A method and system for expanding sand grain-shaped raw material drops raw material downwards through a substantially vertical heated shaft equipped for forming a temperature profile, in which a shaft flow prevails wherein raw material expands as a result of heat transfer in the shaft to form expanded granulate, and the granulate formed is passed into a pneumatic conveying line with a conveying flow for further transport. The method and system continuously measure the bulk density of the expanded granulate to continuously check the quality of the expansion process, automatically or manually adapting the temperature profile in the shaft and/or automatically or manually reducing the feeding of raw material into the shaft upon detecting a deviation from at least one defined bulk density.

Abstract: The invention relates to an apparatus (10) for producing an expanded granulate from sand-grain-shaped material (1), comprising a furnace (2) with a substantially vertically extending furnace shaft (3) and a feed device (5) arranged above or in the upper region of the furnace shaft (3) for feeding the sand-grain-shaped material (1) to the furnace shaft (3). In order to achieve uniform expansion of the sand-grain-shaped material, the feed device (8) is formed to introduce the sand-grain-shaped material (1) in form of at least one downwardly falling curtain into the upper region of the furnace shaft (3), wherein the drop section (4) of the curtain (25) lies in a decentralised, preferably peripheral region of the furnace shaft cross-section. The invention also relates to a method for producing an expanded granulate from sand-grain-shaped mineral material.

Abstract: The invention relates to a method for the expansion of sand grain-shaped raw material (1) in which the raw material drops downwards through a substantially vertical heated shaft (3) provided with means (2) for heating, in which a shaft flow (4) prevails and to a dosing element (6) which can be connected to a substantially vertical shaft (3) and a conveying line (7). In order to prevent the pressure fluctuations coming from the conveying line (7) in the area of the shaft (3), a dosing element (6) is attached between the shaft and the conveying (7) line, in which the quantity of granulate which goes over from the shaft (3) into the conveying line (7) is regulated via means for regulating so that a defined material collection of the granulate is formed as a buffer in the dosing element (6), which decouples the shaft flow (4) from the conveying flow.

Abstract: The invention relates to a method for producing an expanded granulate from sand grain-shaped mineral material (1) with a propellant, wherein the material (1) is fed into a vertically upright furnace (2) from above and said material (1) falls along a drop section (4) through multiple heating zones (5) in a furnace shaft (3) of the furnace (2), wherein each heating zone (5) is heatable using at least one independently controllable heating element (6), and the material (1) is heated to a critical temperature at which the surfaces (7) of the sand grains (15) plasticize and the sand grains (15) are expanded by the propellant.