Physical parameters affecting grinding Wood in a cyclic stress field During grinding, a cyclic stress mechanism defibrates the wood. The grindstone grits pass transversally over the wood fibres, producing a cyclic sequence of pressing and shearing forces in the wood grinding zone, where the fibres are subjected to sequential compression and relaxation (Figure 1). The
Authors & references
Raimo Alén, University of Jyväskylä and Victoria Lindqvist, Forest Products Engineers have modified mainly the text from the reference “Salmén, L., Lucander, M., Härkönen, E. and Sundholm, J. 2009. In: Lönnberg, B. (Ed.). Mechanical Pulping. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 35−67”.
Salmén, L., Lucander, M., Härkönen, E. and Sundholm, J. 2009. In: Lönnberg, B. (Ed.). Mechanical Pulping. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 35−67.
Salmén, L. 1987. The effect of the frequency of a mechanical deformation on the fatigue of wood. Journal of Pulp and Paper Science 13(1):J23.
Salmén, L. and Fellers, C. 1982. The fundamentals of energy consumption during viscoelastic and plastic deformation of wood. Transactions of the Technical Section, Pulp and Paper Technical Association of Canada 9(4):TR93.
Uhmeier, A. and Salmén, L. 1996. Repeated large radial compression of heated spruce. Nordic Pulp and Paper Research Journal 11(3):171.
Salmén, L., Dumail, J. F. and Uhmeier, A. 1997. Compression behavior of wood in relation to mechanical pulping. Proceedings of 1997 International Mechanical Pulping Conference, SPCI, Stockholm, Sweden. P. 207.
Htun, M., Salmen, L. and Eriksson, L. 1993. A better understanding of wood as a material – a way to increased energy efficiency when making mechanical pulps? In: Pilavachi, P. A. (Ed.). Energy Efficiency in Process Technology. Elsevier Applied Sciences, London, UK. Pp. 1086–1095.
Salmén, L. 1988. Directional viscoelastic properties of the fiber composite wood. In: Giesekus, H. (Ed.). Progress and Trends in Rheology II. Steinkopff Verlag, Darmstadt, Germany. Pp. 234–235.
Powell, F. G., Luhde, F. and Logan K. C. 1965. Supergroundwood by grinding, Pulp and Paper Magazine of Canada 66(8):T399.
Atack, D., Fontebasso, J. and Stationwala, M. I. 1983. Pressurized grinding of loblolly pine. Tappi Journal 66(7):75.
Lucander, M. 1985. Einfluss der Prozessvariabeln auf die Qualität des Druckschliffs. Proceedings of PTS Holzstoff Symposium München, Germany.
Lucander, M. 1995. Recent investigations of pressure grinding at elevated grinding pressure. Proceedings of PTS-TUD-Symposium Papierzellstoff und Holzstofftechnik -95, München, Germany. P. 7.
Haikkala, P., Liimatainen, H., Manner, H. and Tuominen, R. 1989. Pressure groundwood (PGW), super pressure groundwood (PGW-S) and thermomechanical pulp (TMP) in wood-containing printing papers. Proceedings of 1989 International Mechanical Pulping Conference, Helsinki, Finland. P. 36.
Pasanen, K., Peltonen, E., Haikkala, P. and Liimatainen, H. 1991. Experiences using super pressurized groundwood at a Finnish supercalender paper mill. Tappi Journal 74(12):63.
Honkanen, K. and Yrjövuori, R. 1993. The first years of the first super pressure ground- wood (PGW-S) plant. Proceedings of 1993 International Mechanical Pulping Conference, PTF, Oslo, Norway. P. 44.
Tuovinen, O. and Liimatainen, H. 1993. Fibers, fibrils and fractions – an analysis of various mechanical pulps. Proceedings of 1993 International Mechanical Pulping Conference, PTF, Oslo, Norway. P. 324.
Lucander, M., Lönnberg, B. and Haikkala, P. 1985. The effect of stone surface modifications of groundwood properties. Journal of Pulp and Paper Science 11(2):J35.
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