Abstract: The invention relates to a hammer crusher grate with multiple crossing thick plates, wherein the thick plates are interconnected with each other in a force-fit way via corresponding profiles while forming the grate structure.

Abstract: This invention relates to a device for purification of flue gas of industrial shredders.

Abstract: The invention relates to a machine for processing residual material, comprising at least one actuator which acts mechanically upon the residual material and at least a portion of the surface of which is movable relative to a corresponding surface of an adjacent component of the machine.

Abstract: The invention relates to a grinding machine for all kinds of material, the machine comprising: a receiving element for the material (5); at least one shaft (2) positioned in the housing (1) and provided with grinding tools (3); rigid cutting tools (4) which are arranged in the housing (1) and against which the grinding tools (3) operate, grinding the material (5) with specifically low forces. To this end, the grinding tools (3) comprise cutting regions (3.1, 3.2) within which an inner cutting region (3.1) can take a large amount of material (5) to be ground and grind the same, thus comprising a small lever arm, and an outer cutting region (3.2) can take a smaller amount of material (5) to be ground and grind the same, thus comprising a large lever arm. According to the invention, the rigid cutting tools (4) are provided with teeth (4.2) having profiles (4.3) which cooperate with one of the cutting regions (3.1, 3.2), a first transversal edge (3.

Abstract: The invention relates to hydraulic control in a hydraulic system for the operation of a machine tool such as a press for processing material of a certain type, especially for the operation of the scrap cutters. Said control allows for impact attenuation and combined rapid motion switching with load compensation and transfer of a hydraulic medium of a hydraulic cylinder for the movement of the other. According to the invention, said control comprises hydraulic media of a hydraulic cylinder for pre-control of a first main valve element (2.4.0), a second main valve element (2.7.0) and a third main valve element (3.7.0) which are functionally combined and a fourth valve (2.5).

Abstract: A method and a briquetting press for briquetting metal chips, wherein stable briquettes/pressed component are produced. The actual length (Lact) of the pressed component is obtained by applying pressure (Pmax/Preq) using at least one pressing ram (1, 2) and measuring the length with a measuring device (5, 6). The measured value is compared to a desired nominal value (Lnom) and a difference value (?) is subsequently determined.

Abstract: A method and a briquetting press for briquetting metal chips wherein stable briquettes/pressed components are produced. The actual length (Lact) of the pressed component is obtained by applying pressure (Pmax/Preq) using at least one pressing ram (1,2) and measuring the length with a measuring device (5, 6). The measured value is compared to a desired nominal value (Lnom) and a difference value (&Dgr;) is subsequently determined.

Abstract: A method and apparatus involving releasing the rotor (1) and turning it to and fixing it at top dead center, attaching an extractor head to an exposed end of the hammer axle. A cross-piece (2.1) is applied and a releasable element of a slide (2.4) of a hammer axle puller is pulled, making a releasable connection between cross-piece and rotor attachment elements. The slide is moved to a position in which the puller head is connected to the slide in a shape-locking manner, securing the hammer position, returning the carriage whilst extracting the hammer axle (1.5) to release the hammer. The connection between the head and slide is released, moving the slide until the head and slide re-engage and returning the slide again to extract the hammer axle until the entire hammer and/or protective cap (1.4) and axle if appropriate are extracted. An Independent claim is also included for an arrangement for implementing the method.

Abstract: A device for separating undesirable oblong and/or curved pieces of scrap from a scrap flow or scrap pile with a higher density, such as chill scrap, by means of an oscillating or shaking screen (1) includes a screen base (2) with a plurality of parallel guide bars (4) running in the longitudinal direction and a plurality of separating bars (3) which present openings (3.2) whose longitudinal and transverse cross-sections have different geometric shapes.

Abstract: The invention provides a method and an arrangement for operating a system for comminuting scrap material. The installation includes a supply device (1) for the scrap material to be comminuted, and a comminuting machine (2) with at least one motor-driven (2.3) rotor (2.2) which has comminuting tools (2.2.1) and is horizontally positioned in a housing (2.1) and has an ejection door (2.1.1). The inventive installation also includes drive means for controlling the power and for protecting the installation from scrap material which is difficult to comminute or which cannot be comminuted at all, such as coarse, heavy or hard parts. In order to optimize the comminuting process, the values of the motor output, of the rotation speed of the rotor, of the temperature of the motor and the motor bearings and/or of the height of the scrap material flow (3) supplied to the comminuting machine (2), are inputted in a control device (4) and used to control/regulate the scrap material supply. Technical means (4.5, 4.6, 4.

Abstract: The invention relates to a method and a briquetting press for briquetting metal chips. The aim of the invention is to produce stable briquettes/pressed components. The actual length (Lact) of the pressed component is obtained by applying pressure (Pmax/Preq) using at least one pressing ram (1, 2) and measuring the length with a measuring device (5, 6). The measured value is compared to a desired nominal value (Lnom) and a difference value (&Dgr;) is subsequently determined.

Abstract: To operate the air circulation and convey the stock flow of scrap material comminuted in the housing (1) of a hammer mill, the airflow generated by the blower effect of a rotor (2) and the stock flow passing through an upper classifying grate (4) are diverted by a deflector hood (8) and guided vertically downwards into a duct (6) that is separate from the housing (1). The stock flow is combined with the stock flow classified in the area of a lower classifying grate (5). The air flow is then guided in the circulating air and the combined stock flow is conveyed to a device (11) for further processing, sorting and/or conveyance.

Abstract: The invention relates to a device for loading a fragmenting machine, such as a hammer crusher, including a front and rear upper drive roller which are equipped, independently of each other, with a drive mechanism and arranged above the feed plane of a feed chute. The drive rollers are mounted on a displaceable and pressure exerting system of levers, such that a continuous, pre-pressed and controlled feed of recyclable material for fragmenting is guaranteed.

Abstract: The invention relates to a method and to a shearing and compacting press for the production of pressed parts, preferably packages (20) from waste material, especially scrap and sheet clippings. The material used is pre-compacted in a first compacting step. In a second compacting step, the material, which has been pre-compacted to the width of the package, is subjected to intermediate compacting until the height of the package (20) is reached. In a third compacting step, final compacting of the material to the final width or length of the package (20) is carried out. According to the invention, the material is pre-compacted with a continuos force and optionally sheared until the compressor (3.1) reaches its final position. The compressor (3.2) is securely adjusted and guided to its end position on a parallel plane. Subsequently, the compressor (3.3) is guided in a position in which the compressor (3.1) releases the opening of the package chamber (2.3) when the compressor (3.1) is driven back.

Abstract: A method and an installation for operating a system for comminuting scrap material is provided. The installation includes a supply device (1) for the scrap material to be comminuted, and a comminuting machine (2) with at least one motor-driven (2.3) rotor (2.2) which has comminuting tools (2.2.1) and is horizontally positioned in a housing (2.1) and has an ejection door (2.1.1). The inventive installation also includes drive means for controlling the power and for protecting the installation from scrap material which is difficult to comminute or which cannot be comminuted at all, such as coarse, heavy or hard parts. For optimizing the comminuting process, the values of the motor output, of the rotation speed of the rotor, of the temperature of the motor and the motor bearings and/or of the height of the scrap material flow (3) supplied to the comminuting machine (2), are inputted in a controller (4) and used to control/regulate the scrap material supply. Technical means (4.5, 4.6, 4.