Browsing by Author "Nyamjargal Erdeneduvchir"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Investigations on how the froth height is influencing the flotation of ultrafine particles using the newly developed separation apparatus MultiDimFlot
    (German Mongolian Institute for Resouce and Technology, 2022-05-08) Nyamjargal Erdeneduvchir; Thomas Hollenberg; Martin Rudolph
    Flotation is a separation process that is based on differences in the surface wettability properties of materials. Hydrophobic particles adhere to air bubbles and create particle-bubble aggregates that rise in suspension and form a froth layer, whereas the hydrophilic particles sink and remain in the pulp. The flotation process is widely applied in the separation of fine particles with a particle size range between 10 µm and 200 µm. However, the flotation of ultrafine particles (x < 10 µm) is facing challenges and unwanted ultrafine gangue particles have a high probability of being entrained, which reduces the quality of the product.
  • Thumbnail Image
    Item
    Investigations on how the froth height is influencing the flotation of ultrafine particles using the newly developed separation apparatus MultiDimFlot
    (German Mongolian Institute for Resouce and Technology, 2022-05-08) Nyamjargal Erdeneduvchir; Thomas Hollenberg; Martin Rudolph
    Flotation is a separation process that is based on differences in the surface wettability properties of materials. Hydrophobic particles adhere to air bubbles and create particle-bubble aggregates that rise in suspension and form a froth layer, whereas the hydrophilic particles sink and remain in the pulp. The flotation process is widely applied in the separation of fine particles with a particle size range between 10 µm and 200 µm. However, the flotation of ultrafine particles (x < 10 µm) is facing challenges and unwanted ultrafine gangue particles have a high probability of being entrained, which reduces the quality of the product.
  • Thumbnail Image
    Item
    Investigations on how the froth height is influencing the flotation of ultrafine particles using the newly developed separation apparatus MultiDimFlot
    (German Mongolian Institute for Resouce and Technology, 2023-05-07) Nyamjargal Erdeneduvchir; Thomas Hollenberg; Martin Rudolph
    Flotation is a separation process that is based on differences in the surface wettability properties of materials. Hydrophobic particles adhere to air bubbles and create particle-bubble aggregates that rise in suspension and form a froth layer, whereas the hydrophilic particles sink and remain in the pulp. The flotation process is widely applied in the separation of fine particles with a particle size range between 10 µm and 200 µm. However, the flotation of ultrafine particles (x < 10 µm) is facing challenges and unwanted ultrafine gangue particles have a high probability of being entrained, which reduces the quality of the product. The thesis work is conducted within one part of the MultiDimFlot project to investigate the influence of froth height on the flotation of ultrafine particles using the newly developed separation apparatus MultiDimFlot. MultiDimFlot is part of the priority program SPP 2045 MehrDimPart funded by the German research foundation. The project aims to develop a new multidimensional separation apparatus with a combination of mechanical flotation cell (high turbulence for collision between particle and bubble) and column flotation cell (fractionating effect on particle–deep froth), which separate ultrafine particles more efficiently. The experimental work is conducted at fixed parameters (rotor speed, air rate, frother concentration) using a model feed consisting of magnetite (non-floatable) and different glass particles (floatable) with varying column lengths (column lengths of 80 cm, 60 cm). The glass particles have various shapes (fragments and spheres) and three different wettability states (hydrophilic, medium hydrophobic and highly hydrophobic). All experiment works were completed at the Department of Process at the Helmholtz-Institute Freiberg for Resource Technology from December 2022 to February 2023.