Abstract: A spinning preparation machine for processing a fiber material includes a drafting system that moves the fiber material in a direction of conveyance and includes a plurality of roller pairs arranged one after the other with upper rollers and lower rollers. Elongated stripping devices having a stripping edge are in contact with the upper rolls to remove dirt and other contaminants therefrom. A suction hood is mounted above the stripping devices and is connected to a vacuum source. Each stripping device is mounted in an individual respective suction channel, and the stripping edge of the stripping device protrudes through a first opening in the respective suction channel. Each suction channel is mounted on a bottom wall having openings therein and includes a second opening opposite the first opening that is aligned opposite from one of the openings in the bottom wall. The suction hood protrudes beyond the openings in the bottom wall and is mounted on a side of the bottom wall opposite the suction channels.

Abstract: The invention relates to an apparatus on a spinning preparation machine having a drafting system (1) for processing a fiber material (G) which is moved by the drafting system in the direction of conveyance (F), including a plurality of roller pairs arranged one after the other with upper rollers and lower rollers (2, 3; 4, 5; 6, 7), having at least two elongated stripping devices (9) which are each in contact with one of the upper rolls (3, 5, 7) along their stripping edges (K) for removing dirt and other contaminants, and having a suction hood (AH) which is mounted above the stripping devices (9) and is connected to a vacuum source (U).

Abstract: The invention relates to a drive device of a preparation machine (1) for producing lap rolls (W), comprising a double-shaft motor (M), the first output shaft (W1) of which extends into a gearbox (G), which is connected via drive means (G1, G2) to a winding unit (WA) and to calender rolls (A1-A4) installed upstream of the winding unit, and the second output shaft (W2) of the double-shaft motor (M) is connected via at least a first belt drive (B1), which is provided with a drive belt (E1) guided via pulleys (R1, R2), to an intermediate shaft of a feed table (T), which is connected via further drive means (G3) to at least one delivery roller (20) of a drafting system (SW), which delivery roller is installed with parallel spacing from the intermediate shaft.

Abstract: The solid, liquid and gaseous waste products which arise during the manufature of carbon electrodes are concentrated.First, the solid electrode waste is mixed with the carbon-rich dusts from crushing operations, and with lime or lime and gypsum (from a wet scrubbing operation). By means of grinding and screening the mixture is converted to a suitable range of fine particulate sizes, then fed continuously as adsorbent material through a dry scrubbing unit through which is passed the gaseous waste that also contains fractions of fluid waste. The thus charged adsorbent is combusted together with oily waste in a low temperature fluidized bed boiler. The resultant ash and slag which contain the pollutants as non-hazardous calcium sulfate or calcium fluoride are transported to a dumping site.

Abstract: A mixture which is used for the manufacture of electrodes and comprises dry material and electrode binding agent. The mixture is prepared in a system which is at least in part dust and gastight and such that the mixture is simultaneously stirred up or fluidized, degassed and homogenized, and treated thermally. In the course of such treatment further additions can be made to the mixture. The described procedure takes place mainly in mixers operating continuously or discontinuously, various arrangements and designs of mixer being possible.Fundamental to the thermal treatment is that the mixture can be cooled in a mixer such that the coolant vaporizes completely during the mixing.The thermal treatment is regulated by way of given operational parameters.