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Träfflista för sökning "WFRF:(Pugh R.J.) srt2:(2000-2004)"

Sökning: WFRF:(Pugh R.J.) > (2000-2004)

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1.
  • Alexandrova, L., et al. (författare)
  • Thin film studies in mixed cationic-anionic surfactant system
  • 2003
  • Ingår i: Proceedings of the XXII International Mineral Processing Congress. - Marshalltown, South Africa : South African Institute of Mining and Metallurgy. - 0958460922 ; , s. 838-846
  • Konferensbidrag (refereegranskat)
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2.
  • Shen, H, et al. (författare)
  • Selective flotation separation of plastics by chemical conditioning with methyl cellulose
  • 2002
  • Ingår i: Resources, Conservation and Recycling. - 0921-3449 .- 1879-0658. ; 35, s. 229-241
  • Tidskriftsartikel (refereegranskat)abstract
    • The floatability of seven plastics (POM, PVC, PET, PMMA, PC, PS and ABS) in the presence of methyl cellulose (MC) and separation of plastics mixtures were investigated in this paper. It was found that the seven plastics can be separated into three groups by using the wetting agent MC. Group one includes POM and PVC. They are depressed at very low MC concentrations. Group two, including PET, PMMA and PC, has an intermediate floatability. Group three (ABS and PS) has a high floatability. They are almost not depressed within the given MC concentration range. In order to understand the mechanism of selective flotation of plastics and the chemical conditioning process, surface chemical factors, such as wettability of plastics and surface tension of flotation medium, and gravity factors, such as particle density and shape, were studied. It was found that the depressing effect of MC on plastics is ascribed mainly to its adsorption on the plastics surfaces. The MC molecules absorbed on plastics expose some of their polar groups oriented towards the aqueous phase, hence making the plastics surfaces hydrophilic. In addition, flotation selectivity for the plastics is dominated not only by wettability of plastics, but also by particle size, density and shape
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3.
  • Shen, Huiting, et al. (författare)
  • Selective flotation separation of plastics by particle control
  • 2001
  • Ingår i: Resources, Conservation and Recycling. - 0921-3449 .- 1879-0658. ; 33:1, s. 37-50
  • Tidskriftsartikel (refereegranskat)abstract
    • A study on the control of particle size distribution (PSD) of the ground carbonate product in stirred media mills (wet Drais stirred bead mill and dry Sala Agitated Mill) is presented in this paper. The results indicated that the slope of product size distribution can be controlled by altering some operating parameters, such as size of grinding media and tip or peripheral speed. The profile of product size distribution from the stirred media mills was found to follow most closely the Rosin-Rammler-Bennett (RRB) model.
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  • Resultat 1-3 av 3
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tidskriftsartikel (2)
konferensbidrag (1)
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refereegranskat (3)
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Forssberg, Eric (3)
Pugh, R.J. (3)
Alexandrova, L (1)
Grigorov, L (1)
Rao, K. Hanumantha (1)
Shen, H (1)
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Shen, Huiting (1)
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