Effect of Specific Edge Loading on Freeness Drop, 1996 Engineering Conference Proceedings
P.D. Bennett, V. Turt & J.M. Genco
University of Maine
S. Jansson & B. K. Lönnberg
Åbo Akademi University
Refining trails were conducted in a re-circulation mode using bleached softwood and hardwood Kraft pulps. In the experiments, the Canadian standard freeness was measured on the refined samples as a function of time using a variable speed double disk refiner. The refining process was described using the specific edge load theory formulated by Brecht (1967). The net specific energy (Enet ) was varied at constant values for the specific edge loading (SEL). The data for the freeness drop (deltaF) could be mathematically correlated in terms of the specific edge load (SEL) and the net refining energy (Enet ) using the power low suggested by Leider and Nissan,( 1994). The freeness drop coefficient....
Effect of Specific Edge Loading on Freeness Drop, 1996 Engineering Conference Proceedings
