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Browsing by Subject "belt conveyor"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Cutting investment costs by using a new solution of speed controlled belt conveyer with available medium voltage 6kV-slipring-motors
    (2007) Loose, Bernd; Paetzold, Thomas; Kroschk, Steffen
    Traditional belt conveyors with power over 400 kW in open pit coal mines are usually equipped with 6 kV slipring motors with resistors or liquid starters. The following benefits of speed-controlled belt conveyors: - saving of energy costs thanks to adjustable belt speed control, depending on the belt loading level, - reduction of mechanical wear of cable drums, gears and conveyor belts, - saving of investment costs thanks to decreasing of installed power in connection with extended loading power, - decreasing the amount of stoppages and reduction of repair costs, do not exist in case of traditional belt conveyors. The 6 kV drives, installed by BEA Technische Dienste Lausitz GmbH and Rockwell Automation in Vattenfall Europe Mining AG with existing 6 kV slipring motors, have enabled to cut investment costs significantly. After additional sensors and measure instruments were mounted and tested with 20-year-old DSRCJ 5621-6 slipring motors (produced by VEM Sachsenwerk), these motors have been feeding by PF7000 6 kV Rockwell Automation frequency converter and working (permanent operation) on the 2,5 m belt conveyor station in open pit coal mine Welzow Sud.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Kopalnia węgla brunatnego »Barsingsar« w Indiach. Najważniejsze zagadnienia technologii wydobycia, przeróbki, transportu węgla oraz odwodnienia
    (2007) Bojczuk, Janusz; Bajcar, Adam
    The article presents based on a truck and shovel mining technology. Building methodology of the technological model considering all exploitation phases of open pit and including lignite quality variables is given. Moreover, the lignite processing with lignite transportation to power plant by belt conveyors system is presented. Dewatering problems relative to specific Barsingsar region climatic conditions together with land reclamation program and mine closure plan are presented in the paper.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    The use of mine warehouse stocks for the correct completion of mining belt conveyors
    (Wydawnictwa AGH, 2022) Wójcicki, Waldemar; Wójcicki, Michał
    The article presents the principles of the rational use of conveyor subassemblies owned in underground coal mining plants for the purpose of listing complete devices appropriate for specific locations and required operating parameters. Since these are often units from different manufacturers, the user will be required to prepare a collective User Manual and issue a Declaration of Conformity.